Add remove_long filter to simple search analyzer

docs/api.md

@@ -62,10 +62,14 @@ The REST api provides five different forms of authentication.
 
 ## Searching for documents
 
-Full text searching is available on the `/api/documents/` endpoint. Two
-specific query parameters cause the API to return full text search
+Full text searching is available on the `/api/documents/` endpoint. The
+following query parameters cause the API to return Tantivy-backed search
 results:
 
+- `/api/documents/?text=your%20search%20query`: Search title and content
+  using simple substring-style search.
+- `/api/documents/?title_search=your%20search%20query`: Search title only
+  using simple substring-style search.
 - `/api/documents/?query=your%20search%20query`: Search for a document
   using a full text query. For details on the syntax, see [Basic Usage - Searching](usage.md#basic-usage_searching).
 - `/api/documents/?more_like_id=1234`: Search for documents similar to
@@ -439,3 +443,5 @@ Initial API version.
 - The `all` parameter of list endpoints is now deprecated and will be removed in a future version.
 - The bulk edit objects endpoint now supports `all` and `filters` parameters to avoid having to send
   large lists of object IDs for operations affecting many objects.
+- The legacy `title_content` document search parameter is deprecated and will be removed in a future version.
+  Clients should use `text` for simple title-and-content search and `title_search` for title-only search.

src-ui/e2e/document-list/document-list.spec.ts

@@ -49,11 +49,11 @@ test('text filtering', async ({ page }) => {
   await page.getByRole('main').getByRole('combobox').click()
   await page.getByRole('main').getByRole('combobox').fill('test')
   await expect(page.locator('pngx-document-list')).toHaveText(/32 documents/)
-  await expect(page).toHaveURL(/title_content=test/)
+  await expect(page).toHaveURL(/text=test/)
   await page.getByRole('button', { name: 'Title & content' }).click()
   await page.getByRole('button', { name: 'Title', exact: true }).click()
   await expect(page.locator('pngx-document-list')).toHaveText(/9 documents/)
-  await expect(page).toHaveURL(/title__icontains=test/)
+  await expect(page).toHaveURL(/title_search=test/)
   await page.getByRole('button', { name: 'Title', exact: true }).click()
   await page.getByRole('button', { name: 'Advanced search' }).click()
   await expect(page).toHaveURL(/query=test/)

src-ui/e2e/document-list/requests/api-document-list2.har

@@ -3545,7 +3545,7 @@
         "time": 1.091,
         "request": {
           "method": "GET",
-          "url": "http://localhost:8000/api/documents/?page=1&page_size=50&ordering=-created&truncate_content=true&include_selection_data=true&title_content=test",
+          "url": "http://localhost:8000/api/documents/?page=1&page_size=50&ordering=-created&truncate_content=true&include_selection_data=true&text=test",
           "httpVersion": "HTTP/1.1",
           "cookies": [],
           "headers": [
@@ -3579,7 +3579,7 @@
               "value": "true"
             },
             {
-              "name": "title_content",
+              "name": "text",
               "value": "test"
             }
           ],
@@ -4303,7 +4303,7 @@
         "time": 0.603,
         "request": {
           "method": "GET",
-          "url": "http://localhost:8000/api/documents/?page=1&page_size=50&ordering=-created&truncate_content=true&include_selection_data=true&title__icontains=test",
+          "url": "http://localhost:8000/api/documents/?page=1&page_size=50&ordering=-created&truncate_content=true&include_selection_data=true&title_search=test",
           "httpVersion": "HTTP/1.1",
           "cookies": [],
           "headers": [
@@ -4337,7 +4337,7 @@
               "value": "true"
             },
             {
-              "name": "title__icontains",
+              "name": "title_search",
               "value": "test"
             }
           ],

src-ui/src/app/components/app-frame/global-search/global-search.component.spec.ts

@@ -24,7 +24,7 @@ import {
   FILTER_HAS_DOCUMENT_TYPE_ANY,
   FILTER_HAS_STORAGE_PATH_ANY,
   FILTER_HAS_TAGS_ALL,
-  FILTER_TITLE_CONTENT,
+  FILTER_SIMPLE_TEXT,
 } from 'src/app/data/filter-rule-type'
 import { GlobalSearchType, SETTINGS_KEYS } from 'src/app/data/ui-settings'
 import { DocumentListViewService } from 'src/app/services/document-list-view.service'
@@ -545,7 +545,7 @@ describe('GlobalSearchComponent', () => {
     component.query = 'test'
     component.runFullSearch()
     expect(qfSpy).toHaveBeenCalledWith([
-      { rule_type: FILTER_TITLE_CONTENT, value: 'test' },
+      { rule_type: FILTER_SIMPLE_TEXT, value: 'test' },
     ])
 
     settingsService.set(

src-ui/src/app/components/app-frame/global-search/global-search.component.ts

@@ -25,7 +25,7 @@ import {
   FILTER_HAS_DOCUMENT_TYPE_ANY,
   FILTER_HAS_STORAGE_PATH_ANY,
   FILTER_HAS_TAGS_ALL,
-  FILTER_TITLE_CONTENT,
+  FILTER_SIMPLE_TEXT,
 } from 'src/app/data/filter-rule-type'
 import { ObjectWithId } from 'src/app/data/object-with-id'
 import { GlobalSearchType, SETTINGS_KEYS } from 'src/app/data/ui-settings'
@@ -410,7 +410,7 @@ export class GlobalSearchComponent implements OnInit {
   public runFullSearch() {
     const ruleType = this.useAdvancedForFullSearch
       ? FILTER_FULLTEXT_QUERY
-      : FILTER_TITLE_CONTENT
+      : FILTER_SIMPLE_TEXT
     this.documentService.searchQuery = this.useAdvancedForFullSearch
       ? this.query
       : ''

src-ui/src/app/components/common/edit-dialog/storage-path-edit-dialog/storage-path-edit-dialog.component.spec.ts

@@ -4,7 +4,7 @@ import { ComponentFixture, TestBed } from '@angular/core/testing'
 import { By } from '@angular/platform-browser'
 import { NgbAccordionButton, NgbActiveModal } from '@ng-bootstrap/ng-bootstrap'
 import { of, throwError } from 'rxjs'
-import { FILTER_TITLE } from 'src/app/data/filter-rule-type'
+import { FILTER_SIMPLE_TITLE } from 'src/app/data/filter-rule-type'
 import { DocumentService } from 'src/app/services/rest/document.service'
 import { StoragePathService } from 'src/app/services/rest/storage-path.service'
 import { SettingsService } from 'src/app/services/settings.service'
@@ -105,7 +105,7 @@ describe('StoragePathEditDialogComponent', () => {
       null,
       'created',
       true,
-      [{ rule_type: FILTER_TITLE, value: 'bar' }],
+      [{ rule_type: FILTER_SIMPLE_TITLE, value: 'bar' }],
       { truncate_content: true }
     )
     listSpy.mockReturnValueOnce(

src-ui/src/app/components/common/edit-dialog/storage-path-edit-dialog/storage-path-edit-dialog.component.ts

@@ -23,7 +23,7 @@ import {
 } from 'rxjs'
 import { EditDialogComponent } from 'src/app/components/common/edit-dialog/edit-dialog.component'
 import { Document } from 'src/app/data/document'
-import { FILTER_TITLE } from 'src/app/data/filter-rule-type'
+import { FILTER_SIMPLE_TITLE } from 'src/app/data/filter-rule-type'
 import { DEFAULT_MATCHING_ALGORITHM } from 'src/app/data/matching-model'
 import { StoragePath } from 'src/app/data/storage-path'
 import { IfOwnerDirective } from 'src/app/directives/if-owner.directive'
@@ -146,7 +146,7 @@ export class StoragePathEditDialogComponent
               null,
               'created',
               true,
-              [{ rule_type: FILTER_TITLE, value: title }],
+              [{ rule_type: FILTER_SIMPLE_TITLE, value: title }],
               { truncate_content: true }
             )
             .pipe(

src-ui/src/app/components/common/input/document-link/document-link.component.spec.ts

@@ -3,7 +3,7 @@ import { provideHttpClientTesting } from '@angular/common/http/testing'
 import { ComponentFixture, TestBed } from '@angular/core/testing'
 import { NG_VALUE_ACCESSOR } from '@angular/forms'
 import { of, throwError } from 'rxjs'
-import { FILTER_TITLE } from 'src/app/data/filter-rule-type'
+import { FILTER_SIMPLE_TITLE } from 'src/app/data/filter-rule-type'
 import { DocumentService } from 'src/app/services/rest/document.service'
 import { DocumentLinkComponent } from './document-link.component'
 
@@ -99,7 +99,7 @@ describe('DocumentLinkComponent', () => {
       null,
       'created',
       true,
-      [{ rule_type: FILTER_TITLE, value: 'bar' }],
+      [{ rule_type: FILTER_SIMPLE_TITLE, value: 'bar' }],
       { truncate_content: true }
     )
     listSpy.mockReturnValueOnce(throwError(() => new Error()))

src-ui/src/app/components/common/input/document-link/document-link.component.ts

@@ -28,7 +28,7 @@ import {
   tap,
 } from 'rxjs'
 import { Document } from 'src/app/data/document'
-import { FILTER_TITLE } from 'src/app/data/filter-rule-type'
+import { FILTER_SIMPLE_TITLE } from 'src/app/data/filter-rule-type'
 import { CustomDatePipe } from 'src/app/pipes/custom-date.pipe'
 import { DocumentService } from 'src/app/services/rest/document.service'
 import { AbstractInputComponent } from '../abstract-input'
@@ -121,7 +121,7 @@ export class DocumentLinkComponent
               null,
               'created',
               true,
-              [{ rule_type: FILTER_TITLE, value: title }],
+              [{ rule_type: FILTER_SIMPLE_TITLE, value: title }],
               { truncate_content: true }
             )
             .pipe(

src-ui/src/app/components/document-list/bulk-editor/bulk-editor.component.spec.ts

@@ -428,7 +428,7 @@ describe('BulkEditorComponent', () => {
     req.flush(true)
     expect(req.request.body).toEqual({
       all: true,
-      filters: { title__icontains: 'apple' },
+      filters: { title_search: 'apple' },
       method: 'modify_tags',
       parameters: { add_tags: [101], remove_tags: [] },
     })

src-ui/src/app/components/document-list/filter-editor/filter-editor.component.spec.ts

@@ -67,6 +67,8 @@ import {
   FILTER_OWNER_DOES_NOT_INCLUDE,
   FILTER_OWNER_ISNULL,
   FILTER_SHARED_BY_USER,
+  FILTER_SIMPLE_TEXT,
+  FILTER_SIMPLE_TITLE,
   FILTER_STORAGE_PATH,
   FILTER_TITLE,
   FILTER_TITLE_CONTENT,
@@ -312,7 +314,7 @@ describe('FilterEditorComponent', () => {
     expect(component.textFilter).toEqual(null)
     component.filterRules = [
       {
-        rule_type: FILTER_TITLE_CONTENT,
+        rule_type: FILTER_SIMPLE_TEXT,
         value: 'foo',
       },
     ]
@@ -320,6 +322,18 @@ describe('FilterEditorComponent', () => {
     expect(component.textFilterTarget).toEqual('title-content') // TEXT_FILTER_TARGET_TITLE_CONTENT
   }))
 
+  it('should ingest legacy text filter rules for doc title + content', fakeAsync(() => {
+    expect(component.textFilter).toEqual(null)
+    component.filterRules = [
+      {
+        rule_type: FILTER_TITLE_CONTENT,
+        value: 'legacy foo',
+      },
+    ]
+    expect(component.textFilter).toEqual('legacy foo')
+    expect(component.textFilterTarget).toEqual('title-content') // TEXT_FILTER_TARGET_TITLE_CONTENT
+  }))
+
   it('should ingest text filter rules for doc asn', fakeAsync(() => {
     expect(component.textFilter).toEqual(null)
     component.filterRules = [
@@ -1117,7 +1131,7 @@ describe('FilterEditorComponent', () => {
     expect(component.textFilter).toEqual('foo')
     expect(component.filterRules).toEqual([
       {
-        rule_type: FILTER_TITLE_CONTENT,
+        rule_type: FILTER_SIMPLE_TEXT,
         value: 'foo',
       },
     ])
@@ -1136,7 +1150,7 @@ describe('FilterEditorComponent', () => {
     expect(component.textFilterTarget).toEqual('title')
     expect(component.filterRules).toEqual([
       {
-        rule_type: FILTER_TITLE,
+        rule_type: FILTER_SIMPLE_TITLE,
         value: 'foo',
       },
     ])
@@ -1250,30 +1264,12 @@ describe('FilterEditorComponent', () => {
     ])
   }))
 
-  it('should convert user input to correct filter rules on custom fields query', fakeAsync(() => {
-    component.textFilterInput.nativeElement.value = 'foo'
-    component.textFilterInput.nativeElement.dispatchEvent(new Event('input'))
-    const textFieldTargetDropdown = fixture.debugElement.queryAll(
-      By.directive(NgbDropdownItem)
-    )[3]
-    textFieldTargetDropdown.triggerEventHandler('click') // TEXT_FILTER_TARGET_CUSTOM_FIELDS
-    fixture.detectChanges()
-    tick(400)
-    expect(component.textFilterTarget).toEqual('custom-fields')
-    expect(component.filterRules).toEqual([
-      {
-        rule_type: FILTER_CUSTOM_FIELDS_TEXT,
-        value: 'foo',
-      },
-    ])
-  }))
-
   it('should convert user input to correct filter rules on mime type', fakeAsync(() => {
     component.textFilterInput.nativeElement.value = 'pdf'
     component.textFilterInput.nativeElement.dispatchEvent(new Event('input'))
     const textFieldTargetDropdown = fixture.debugElement.queryAll(
       By.directive(NgbDropdownItem)
-    )[4]
+    )[3]
     textFieldTargetDropdown.triggerEventHandler('click') // TEXT_FILTER_TARGET_MIME_TYPE
     fixture.detectChanges()
     tick(400)
@@ -1291,8 +1287,8 @@ describe('FilterEditorComponent', () => {
     component.textFilterInput.nativeElement.dispatchEvent(new Event('input'))
     const textFieldTargetDropdown = fixture.debugElement.queryAll(
       By.directive(NgbDropdownItem)
-    )[5]
-    textFieldTargetDropdown.triggerEventHandler('click') // TEXT_FILTER_TARGET_ASN
+    )[4]
+    textFieldTargetDropdown.triggerEventHandler('click') // TEXT_FILTER_TARGET_FULLTEXT_QUERY
     fixture.detectChanges()
     tick(400)
     expect(component.textFilterTarget).toEqual('fulltext-query')
@@ -1696,12 +1692,56 @@ describe('FilterEditorComponent', () => {
     ])
   }))
 
+  it('should convert legacy title filters into full text query when adding a created relative date', fakeAsync(() => {
+    component.filterRules = [
+      {
+        rule_type: FILTER_TITLE,
+        value: 'foo',
+      },
+    ]
+    const dateCreatedDropdown = fixture.debugElement.queryAll(
+      By.directive(DatesDropdownComponent)
+    )[0]
+    component.dateCreatedRelativeDate = RelativeDate.WITHIN_1_WEEK
+    dateCreatedDropdown.triggerEventHandler('datesSet')
+    fixture.detectChanges()
+    tick(400)
+    expect(component.filterRules).toEqual([
+      {
+        rule_type: FILTER_FULLTEXT_QUERY,
+        value: 'foo,created:[-1 week to now]',
+      },
+    ])
+  }))
+
+  it('should convert simple title filters into full text query when adding a created relative date', fakeAsync(() => {
+    component.filterRules = [
+      {
+        rule_type: FILTER_SIMPLE_TITLE,
+        value: 'foo',
+      },
+    ]
+    const dateCreatedDropdown = fixture.debugElement.queryAll(
+      By.directive(DatesDropdownComponent)
+    )[0]
+    component.dateCreatedRelativeDate = RelativeDate.WITHIN_1_WEEK
+    dateCreatedDropdown.triggerEventHandler('datesSet')
+    fixture.detectChanges()
+    tick(400)
+    expect(component.filterRules).toEqual([
+      {
+        rule_type: FILTER_FULLTEXT_QUERY,
+        value: 'foo,created:[-1 week to now]',
+      },
+    ])
+  }))
+
   it('should leave relative dates not in quick list intact', fakeAsync(() => {
     component.textFilterInput.nativeElement.value = 'created:[-2 week to now]'
     component.textFilterInput.nativeElement.dispatchEvent(new Event('input'))
     const textFieldTargetDropdown = fixture.debugElement.queryAll(
       By.directive(NgbDropdownItem)
-    )[5]
+    )[4]
     textFieldTargetDropdown.triggerEventHandler('click')
     fixture.detectChanges()
     tick(400)
@@ -2031,12 +2071,30 @@ describe('FilterEditorComponent', () => {
 
     component.filterRules = [
       {
-        rule_type: FILTER_TITLE,
+        rule_type: FILTER_SIMPLE_TITLE,
         value: 'foo',
       },
     ]
     expect(component.generateFilterName()).toEqual('Title: foo')
 
+    component.filterRules = [
+      {
+        rule_type: FILTER_TITLE_CONTENT,
+        value: 'legacy foo',
+      },
+    ]
+    expect(component.generateFilterName()).toEqual(
+      'Title & content: legacy foo'
+    )
+
+    component.filterRules = [
+      {
+        rule_type: FILTER_SIMPLE_TEXT,
+        value: 'foo',
+      },
+    ]
+    expect(component.generateFilterName()).toEqual('Title & content: foo')
+
     component.filterRules = [
       {
         rule_type: FILTER_ASN,
@@ -2156,6 +2214,36 @@ describe('FilterEditorComponent', () => {
     })
   })
 
+  it('should hide deprecated custom fields target from default text filter targets', () => {
+    expect(component.textFilterTargets).not.toContainEqual({
+      id: 'custom-fields',
+      name: $localize`Custom fields (Deprecated)`,
+    })
+  })
+
+  it('should keep deprecated custom fields target available for legacy filters', fakeAsync(() => {
+    component.filterRules = [
+      {
+        rule_type: FILTER_CUSTOM_FIELDS_TEXT,
+        value: 'foo',
+      },
+    ]
+    fixture.detectChanges()
+    tick()
+
+    expect(component.textFilterTarget).toEqual('custom-fields')
+    expect(component.textFilterTargets).toContainEqual({
+      id: 'custom-fields',
+      name: $localize`Custom fields (Deprecated)`,
+    })
+    expect(component.filterRules).toEqual([
+      {
+        rule_type: FILTER_CUSTOM_FIELDS_TEXT,
+        value: 'foo',
+      },
+    ])
+  }))
+
   it('should call autocomplete endpoint on input', fakeAsync(() => {
     component.textFilterTarget = 'fulltext-query' // TEXT_FILTER_TARGET_FULLTEXT_QUERY
     const autocompleteSpy = jest.spyOn(searchService, 'autocomplete')

src-ui/src/app/components/document-list/filter-editor/filter-editor.component.ts

@@ -71,6 +71,8 @@ import {
   FILTER_OWNER_DOES_NOT_INCLUDE,
   FILTER_OWNER_ISNULL,
   FILTER_SHARED_BY_USER,
+  FILTER_SIMPLE_TEXT,
+  FILTER_SIMPLE_TITLE,
   FILTER_STORAGE_PATH,
   FILTER_TITLE,
   FILTER_TITLE_CONTENT,
@@ -195,10 +197,6 @@ const DEFAULT_TEXT_FILTER_TARGET_OPTIONS = [
     name: $localize`Title & content`,
   },
   { id: TEXT_FILTER_TARGET_ASN, name: $localize`ASN` },
-  {
-    id: TEXT_FILTER_TARGET_CUSTOM_FIELDS,
-    name: $localize`Custom fields`,
-  },
   { id: TEXT_FILTER_TARGET_MIME_TYPE, name: $localize`File type` },
   {
     id: TEXT_FILTER_TARGET_FULLTEXT_QUERY,
@@ -206,6 +204,12 @@ const DEFAULT_TEXT_FILTER_TARGET_OPTIONS = [
   },
 ]
 
+const DEPRECATED_CUSTOM_FIELDS_TEXT_FILTER_TARGET_OPTION = {
+  // Kept only so legacy saved views can render and be edited away from, remove me eventually
+  id: TEXT_FILTER_TARGET_CUSTOM_FIELDS,
+  name: $localize`Custom fields (Deprecated)`,
+}
+
 const TEXT_FILTER_TARGET_MORELIKE_OPTION = {
   id: TEXT_FILTER_TARGET_FULLTEXT_MORELIKE,
   name: $localize`More like`,
@@ -318,8 +322,13 @@ export class FilterEditorComponent
           return $localize`Custom fields query`
 
         case FILTER_TITLE:
+        case FILTER_SIMPLE_TITLE:
           return $localize`Title: ${rule.value}`
 
+        case FILTER_TITLE_CONTENT:
+        case FILTER_SIMPLE_TEXT:
+          return $localize`Title & content: ${rule.value}`
+
         case FILTER_ASN:
           return $localize`ASN: ${rule.value}`
 
@@ -353,12 +362,16 @@ export class FilterEditorComponent
   _moreLikeDoc: Document
 
   get textFilterTargets() {
+    let targets = DEFAULT_TEXT_FILTER_TARGET_OPTIONS
     if (this.textFilterTarget == TEXT_FILTER_TARGET_FULLTEXT_MORELIKE) {
-      return DEFAULT_TEXT_FILTER_TARGET_OPTIONS.concat([
-        TEXT_FILTER_TARGET_MORELIKE_OPTION,
+      targets = targets.concat([TEXT_FILTER_TARGET_MORELIKE_OPTION])
+    }
+    if (this.textFilterTarget == TEXT_FILTER_TARGET_CUSTOM_FIELDS) {
+      targets = targets.concat([
+        DEPRECATED_CUSTOM_FIELDS_TEXT_FILTER_TARGET_OPTION,
       ])
     }
-    return DEFAULT_TEXT_FILTER_TARGET_OPTIONS
+    return targets
   }
 
   textFilterTarget = TEXT_FILTER_TARGET_TITLE_CONTENT
@@ -437,10 +450,12 @@ export class FilterEditorComponent
     value.forEach((rule) => {
       switch (rule.rule_type) {
         case FILTER_TITLE:
+        case FILTER_SIMPLE_TITLE:
           this._textFilter = rule.value
           this.textFilterTarget = TEXT_FILTER_TARGET_TITLE
           break
         case FILTER_TITLE_CONTENT:
+        case FILTER_SIMPLE_TEXT:
           this._textFilter = rule.value
           this.textFilterTarget = TEXT_FILTER_TARGET_TITLE_CONTENT
           break
@@ -762,12 +777,15 @@ export class FilterEditorComponent
       this.textFilterTarget == TEXT_FILTER_TARGET_TITLE_CONTENT
     ) {
       filterRules.push({
-        rule_type: FILTER_TITLE_CONTENT,
+        rule_type: FILTER_SIMPLE_TEXT,
         value: this._textFilter.trim(),
       })
     }
     if (this._textFilter && this.textFilterTarget == TEXT_FILTER_TARGET_TITLE) {
-      filterRules.push({ rule_type: FILTER_TITLE, value: this._textFilter })
+      filterRules.push({
+        rule_type: FILTER_SIMPLE_TITLE,
+        value: this._textFilter,
+      })
     }
     if (this.textFilterTarget == TEXT_FILTER_TARGET_ASN) {
       if (
@@ -1009,7 +1027,10 @@ export class FilterEditorComponent
       ) {
         existingRule = filterRules.find(
           (fr) =>
-            fr.rule_type == FILTER_TITLE_CONTENT || fr.rule_type == FILTER_TITLE
+            fr.rule_type == FILTER_TITLE_CONTENT ||
+            fr.rule_type == FILTER_SIMPLE_TEXT ||
+            fr.rule_type == FILTER_TITLE ||
+            fr.rule_type == FILTER_SIMPLE_TITLE
         )
         existingRule.rule_type = FILTER_FULLTEXT_QUERY
       }

src-ui/src/app/data/filter-rule-type.ts

@@ -3,7 +3,7 @@ import { DataType } from './datatype'
 export const NEGATIVE_NULL_FILTER_VALUE = -1
 
 // These correspond to src/documents/models.py and changes here require a DB migration (and vice versa)
-export const FILTER_TITLE = 0
+export const FILTER_TITLE = 0 // Deprecated in favor of Tantivy-backed `title_search`. Keep for now for existing saved views
 export const FILTER_CONTENT = 1
 
 export const FILTER_ASN = 2
@@ -46,7 +46,9 @@ export const FILTER_ADDED_FROM = 46
 export const FILTER_MODIFIED_BEFORE = 15
 export const FILTER_MODIFIED_AFTER = 16
 
-export const FILTER_TITLE_CONTENT = 19
+export const FILTER_TITLE_CONTENT = 19 // Deprecated in favor of Tantivy-backed `text` filtervar. Keep for now for existing saved views
+export const FILTER_SIMPLE_TITLE = 48
+export const FILTER_SIMPLE_TEXT = 49
 export const FILTER_FULLTEXT_QUERY = 20
 export const FILTER_FULLTEXT_MORELIKE = 21
 
@@ -56,7 +58,7 @@ export const FILTER_OWNER_ISNULL = 34
 export const FILTER_OWNER_DOES_NOT_INCLUDE = 35
 export const FILTER_SHARED_BY_USER = 37
 
-export const FILTER_CUSTOM_FIELDS_TEXT = 36
+export const FILTER_CUSTOM_FIELDS_TEXT = 36 // Deprecated. UI no longer includes CF text-search mode. Keep for now for existing saved views
 export const FILTER_HAS_CUSTOM_FIELDS_ALL = 38
 export const FILTER_HAS_CUSTOM_FIELDS_ANY = 39
 export const FILTER_DOES_NOT_HAVE_CUSTOM_FIELDS = 40
@@ -66,6 +68,9 @@ export const FILTER_CUSTOM_FIELDS_QUERY = 42
 
 export const FILTER_MIME_TYPE = 47
 
+export const SIMPLE_TEXT_PARAMETER = 'text'
+export const SIMPLE_TITLE_PARAMETER = 'title_search'
+
 export const FILTER_RULE_TYPES: FilterRuleType[] = [
   {
     id: FILTER_TITLE,
@@ -74,6 +79,13 @@ export const FILTER_RULE_TYPES: FilterRuleType[] = [
     multi: false,
     default: '',
   },
+  {
+    id: FILTER_SIMPLE_TITLE,
+    filtervar: SIMPLE_TITLE_PARAMETER,
+    datatype: 'string',
+    multi: false,
+    default: '',
+  },
   {
     id: FILTER_CONTENT,
     filtervar: 'content__icontains',
@@ -279,6 +291,12 @@ export const FILTER_RULE_TYPES: FilterRuleType[] = [
     datatype: 'string',
     multi: false,
   },
+  {
+    id: FILTER_SIMPLE_TEXT,
+    filtervar: SIMPLE_TEXT_PARAMETER,
+    datatype: 'string',
+    multi: false,
+  },
   {
     id: FILTER_FULLTEXT_QUERY,
     filtervar: 'query',

src-ui/src/app/services/rest/document.service.spec.ts

@@ -10,7 +10,7 @@ import {
   DOCUMENT_SORT_FIELDS,
   DOCUMENT_SORT_FIELDS_FULLTEXT,
 } from 'src/app/data/document'
-import { FILTER_TITLE } from 'src/app/data/filter-rule-type'
+import { FILTER_SIMPLE_TITLE } from 'src/app/data/filter-rule-type'
 import { SETTINGS_KEYS } from 'src/app/data/ui-settings'
 import { environment } from 'src/environments/environment'
 import { PermissionsService } from '../permissions.service'
@@ -138,13 +138,13 @@ describe(`DocumentService`, () => {
     subscription = service
       .listAllFilteredIds([
         {
-          rule_type: FILTER_TITLE,
+          rule_type: FILTER_SIMPLE_TITLE,
           value: 'apple',
         },
       ])
       .subscribe()
     const req = httpTestingController.expectOne(
-      `${environment.apiBaseUrl}${endpoint}/?page=1&page_size=100000&fields=id&title__icontains=apple`
+      `${environment.apiBaseUrl}${endpoint}/?page=1&page_size=100000&fields=id&title_search=apple`
     )
     expect(req.request.method).toEqual('GET')
   })

src-ui/src/app/utils/query-params.spec.ts

@@ -8,6 +8,10 @@ import {
   FILTER_HAS_CUSTOM_FIELDS_ALL,
   FILTER_HAS_CUSTOM_FIELDS_ANY,
   FILTER_HAS_TAGS_ALL,
+  FILTER_SIMPLE_TEXT,
+  FILTER_SIMPLE_TITLE,
+  FILTER_TITLE,
+  FILTER_TITLE_CONTENT,
   NEGATIVE_NULL_FILTER_VALUE,
 } from '../data/filter-rule-type'
 import {
@@ -128,6 +132,26 @@ describe('QueryParams Utils', () => {
       is_tagged: 0,
     })
 
+    params = queryParamsFromFilterRules([
+      {
+        rule_type: FILTER_TITLE_CONTENT,
+        value: 'bank statement',
+      },
+    ])
+    expect(params).toEqual({
+      text: 'bank statement',
+    })
+
+    params = queryParamsFromFilterRules([
+      {
+        rule_type: FILTER_TITLE,
+        value: 'invoice',
+      },
+    ])
+    expect(params).toEqual({
+      title_search: 'invoice',
+    })
+
     params = queryParamsFromFilterRules([
       {
         rule_type: FILTER_HAS_TAGS_ALL,
@@ -148,6 +172,30 @@ describe('QueryParams Utils', () => {
 
   it('should convert filter rules to query params', () => {
     let rules = filterRulesFromQueryParams(
+      convertToParamMap({
+        text: 'bank statement',
+      })
+    )
+    expect(rules).toEqual([
+      {
+        rule_type: FILTER_SIMPLE_TEXT,
+        value: 'bank statement',
+      },
+    ])
+
+    rules = filterRulesFromQueryParams(
+      convertToParamMap({
+        title_search: 'invoice',
+      })
+    )
+    expect(rules).toEqual([
+      {
+        rule_type: FILTER_SIMPLE_TITLE,
+        value: 'invoice',
+      },
+    ])
+
+    rules = filterRulesFromQueryParams(
       convertToParamMap({
         tags__id__all,
       })

src-ui/src/app/utils/query-params.ts

@@ -9,8 +9,14 @@ import {
   FILTER_HAS_CUSTOM_FIELDS_ALL,
   FILTER_HAS_CUSTOM_FIELDS_ANY,
   FILTER_RULE_TYPES,
+  FILTER_SIMPLE_TEXT,
+  FILTER_SIMPLE_TITLE,
+  FILTER_TITLE,
+  FILTER_TITLE_CONTENT,
   FilterRuleType,
   NEGATIVE_NULL_FILTER_VALUE,
+  SIMPLE_TEXT_PARAMETER,
+  SIMPLE_TITLE_PARAMETER,
 } from '../data/filter-rule-type'
 import { ListViewState } from '../services/document-list-view.service'
 
@@ -97,6 +103,8 @@ export function transformLegacyFilterRules(
 export function filterRulesFromQueryParams(
   queryParams: ParamMap
 ): FilterRule[] {
+  let filterRulesFromQueryParams: FilterRule[] = []
+
   const allFilterRuleQueryParams: string[] = FILTER_RULE_TYPES.map(
     (rt) => rt.filtervar
   )
@@ -104,7 +112,6 @@ export function filterRulesFromQueryParams(
     .filter((rt) => rt !== undefined)
 
   // transform query params to filter rules
-  let filterRulesFromQueryParams: FilterRule[] = []
   allFilterRuleQueryParams
     .filter((frqp) => queryParams.has(frqp))
     .forEach((filterQueryParamName) => {
@@ -146,7 +153,17 @@ export function queryParamsFromFilterRules(filterRules: FilterRule[]): Params {
     let params = {}
     for (let rule of filterRules) {
       let ruleType = FILTER_RULE_TYPES.find((t) => t.id == rule.rule_type)
-      if (ruleType.isnull_filtervar && rule.value == null) {
+      if (
+        rule.rule_type === FILTER_TITLE_CONTENT ||
+        rule.rule_type === FILTER_SIMPLE_TEXT
+      ) {
+        params[SIMPLE_TEXT_PARAMETER] = rule.value
+      } else if (
+        rule.rule_type === FILTER_TITLE ||
+        rule.rule_type === FILTER_SIMPLE_TITLE
+      ) {
+        params[SIMPLE_TITLE_PARAMETER] = rule.value
+      } else if (ruleType.isnull_filtervar && rule.value == null) {
         params[ruleType.isnull_filtervar] = 1
       } else if (
         ruleType.isnull_filtervar &&

src/documents/filters.py

@@ -3,6 +3,7 @@ from __future__ import annotations
 import functools
 import inspect
 import json
+import logging
 import operator
 from contextlib import contextmanager
 from typing import TYPE_CHECKING
@@ -77,6 +78,8 @@ DATETIME_KWARGS = [
 CUSTOM_FIELD_QUERY_MAX_DEPTH = 10
 CUSTOM_FIELD_QUERY_MAX_ATOMS = 20
 
+logger = logging.getLogger("paperless.api")
+
 
 class CorrespondentFilterSet(FilterSet):
     class Meta:
@@ -162,9 +165,13 @@ class InboxFilter(Filter):
 
 @extend_schema_field(serializers.CharField)
 class TitleContentFilter(Filter):
+    # Deprecated but retained for existing saved views. UI uses Tantivy-backed `text` / `title_search` params.
     def filter(self, qs: Any, value: Any) -> Any:
         value = value.strip() if isinstance(value, str) else value
         if value:
+            logger.warning(
+                "Deprecated document filter parameter 'title_content' used; use `text` instead.",
+            )
             try:
                 return qs.filter(
                     Q(title__icontains=value) | Q(effective_content__icontains=value),
@@ -243,6 +250,9 @@ class CustomFieldsFilter(Filter):
     def filter(self, qs, value):
         value = value.strip() if isinstance(value, str) else value
         if value:
+            logger.warning(
+                "Deprecated document filter parameter 'custom_fields__icontains' used; use `custom_field_query` or advanced Tantivy field syntax instead.",
+            )
             fields_with_matching_selects = CustomField.objects.filter(
                 extra_data__icontains=value,
             )
@@ -747,6 +757,7 @@ class DocumentFilterSet(FilterSet):
 
     is_in_inbox = InboxFilter()
 
+    # Deprecated, but keep for now for existing saved views
     title_content = TitleContentFilter()
 
     content__istartswith = EffectiveContentFilter(lookup_expr="istartswith")
@@ -756,6 +767,7 @@ class DocumentFilterSet(FilterSet):
 
     owner__id__none = ObjectFilter(field_name="owner", exclude=True)
 
+    # Deprecated, UI no longer includes CF text-search mode, but keep for now for existing saved views
     custom_fields__icontains = CustomFieldsFilter()
 
     custom_fields__id__all = ObjectFilter(field_name="custom_fields__field")

src/documents/migrations/0018_saved_view_simple_search_rules.py

@@ -0,0 +1,92 @@
+# Generated by Django 5.2.12 on 2026-04-01 18:20
+
+from django.db import migrations
+from django.db import models
+
+OLD_TITLE_RULE = 0
+OLD_TITLE_CONTENT_RULE = 19
+NEW_SIMPLE_TITLE_RULE = 48
+NEW_SIMPLE_TEXT_RULE = 49
+
+
+# See documents/models.py SavedViewFilterRule
+def migrate_saved_view_rules_forward(apps, schema_editor):
+    SavedViewFilterRule = apps.get_model("documents", "SavedViewFilterRule")
+    SavedViewFilterRule.objects.filter(rule_type=OLD_TITLE_RULE).update(
+        rule_type=NEW_SIMPLE_TITLE_RULE,
+    )
+    SavedViewFilterRule.objects.filter(rule_type=OLD_TITLE_CONTENT_RULE).update(
+        rule_type=NEW_SIMPLE_TEXT_RULE,
+    )
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("documents", "0017_migrate_fulltext_query_field_prefixes"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="savedviewfilterrule",
+            name="rule_type",
+            field=models.PositiveSmallIntegerField(
+                choices=[
+                    (0, "title contains"),
+                    (1, "content contains"),
+                    (2, "ASN is"),
+                    (3, "correspondent is"),
+                    (4, "document type is"),
+                    (5, "is in inbox"),
+                    (6, "has tag"),
+                    (7, "has any tag"),
+                    (8, "created before"),
+                    (9, "created after"),
+                    (10, "created year is"),
+                    (11, "created month is"),
+                    (12, "created day is"),
+                    (13, "added before"),
+                    (14, "added after"),
+                    (15, "modified before"),
+                    (16, "modified after"),
+                    (17, "does not have tag"),
+                    (18, "does not have ASN"),
+                    (19, "title or content contains"),
+                    (20, "fulltext query"),
+                    (21, "more like this"),
+                    (22, "has tags in"),
+                    (23, "ASN greater than"),
+                    (24, "ASN less than"),
+                    (25, "storage path is"),
+                    (26, "has correspondent in"),
+                    (27, "does not have correspondent in"),
+                    (28, "has document type in"),
+                    (29, "does not have document type in"),
+                    (30, "has storage path in"),
+                    (31, "does not have storage path in"),
+                    (32, "owner is"),
+                    (33, "has owner in"),
+                    (34, "does not have owner"),
+                    (35, "does not have owner in"),
+                    (36, "has custom field value"),
+                    (37, "is shared by me"),
+                    (38, "has custom fields"),
+                    (39, "has custom field in"),
+                    (40, "does not have custom field in"),
+                    (41, "does not have custom field"),
+                    (42, "custom fields query"),
+                    (43, "created to"),
+                    (44, "created from"),
+                    (45, "added to"),
+                    (46, "added from"),
+                    (47, "mime type is"),
+                    (48, "simple title search"),
+                    (49, "simple text search"),
+                ],
+                verbose_name="rule type",
+            ),
+        ),
+        migrations.RunPython(
+            migrate_saved_view_rules_forward,
+            migrations.RunPython.noop,
+        ),
+    ]

src/documents/models.py

@@ -623,6 +623,8 @@ class SavedViewFilterRule(models.Model):
         (45, _("added to")),
         (46, _("added from")),
         (47, _("mime type is")),
+        (48, _("simple title search")),
+        (49, _("simple text search")),
     ]
 
     saved_view = models.ForeignKey(

src/documents/search/_backend.py

@@ -2,11 +2,11 @@ from __future__ import annotations
 
 import logging
 import threading
-import unicodedata
 from collections import Counter
 from dataclasses import dataclass
 from datetime import UTC
 from datetime import datetime
+from enum import StrEnum
 from typing import TYPE_CHECKING
 from typing import Self
 from typing import TypedDict
@@ -19,7 +19,10 @@ from django.conf import settings
 from django.utils.timezone import get_current_timezone
 from guardian.shortcuts import get_users_with_perms
 
+from documents.search._normalize import ascii_fold
 from documents.search._query import build_permission_filter
+from documents.search._query import parse_simple_text_query
+from documents.search._query import parse_simple_title_query
 from documents.search._query import parse_user_query
 from documents.search._schema import _write_sentinels
 from documents.search._schema import build_schema
@@ -45,14 +48,10 @@ _AUTOCOMPLETE_REGEX_TIMEOUT = 1.0  # seconds; guards against ReDoS on untrusted
 T = TypeVar("T")
 
 
-def _ascii_fold(s: str) -> str:
-    """
-    Normalize unicode to ASCII equivalent characters for search consistency.
-
-    Converts accented characters (e.g., "café") to their ASCII base forms ("cafe")
-    to enable cross-language searching without requiring exact diacritic matching.
-    """
-    return unicodedata.normalize("NFD", s).encode("ascii", "ignore").decode()
+class SearchMode(StrEnum):
+    QUERY = "query"
+    TEXT = "text"
+    TITLE = "title"
 
 
 def _extract_autocomplete_words(text_sources: list[str]) -> set[str]:
@@ -74,7 +73,7 @@ def _extract_autocomplete_words(text_sources: list[str]) -> set[str]:
             )
             continue
         for token in tokens:
-            normalized = _ascii_fold(token.lower())
+            normalized = ascii_fold(token.lower())
             if normalized:
                 words.add(normalized)
     return words
@@ -294,8 +293,10 @@ class TantivyBackend:
         doc.add_text("checksum", document.checksum)
         doc.add_text("title", document.title)
         doc.add_text("title_sort", document.title)
+        doc.add_text("simple_title", document.title)
         doc.add_text("content", content)
         doc.add_text("bigram_content", content)
+        doc.add_text("simple_content", content)
 
         # Original filename - only add if not None/empty
         if document.original_filename:
@@ -433,6 +434,7 @@ class TantivyBackend:
         sort_field: str | None,
         *,
         sort_reverse: bool,
+        search_mode: SearchMode = SearchMode.QUERY,
     ) -> SearchResults:
         """
         Execute a search query against the document index.
@@ -441,20 +443,32 @@ class TantivyBackend:
         permission filtering before executing against Tantivy. Supports both
         relevance-based and field-based sorting.
 
+        QUERY search mode supports natural date keywords, field filters, etc.
+        TITLE search mode treats the query as plain text to search for in title only
+        TEXT search mode treats the query as plain text to search for in title and content
+
         Args:
-            query: User's search query (supports natural date keywords, field filters)
+            query: User's search query
             user: User for permission filtering (None for superuser/no filtering)
             page: Page number (1-indexed) for pagination
             page_size: Number of results per page
             sort_field: Field to sort by (None for relevance ranking)
             sort_reverse: Whether to reverse the sort order
+            search_mode: "query" for advanced Tantivy syntax, "text" for
+                plain-text search over title and content only, "title" for
+                plain-text search over title only
 
         Returns:
             SearchResults with hits, total count, and processed query
         """
         self._ensure_open()
         tz = get_current_timezone()
-        user_query = parse_user_query(self._index, query, tz)
+        if search_mode is SearchMode.TEXT:
+            user_query = parse_simple_text_query(self._index, query)
+        elif search_mode is SearchMode.TITLE:
+            user_query = parse_simple_title_query(self._index, query)
+        else:
+            user_query = parse_user_query(self._index, query, tz)
 
         # Apply permission filter if user is not None (not superuser)
         if user is not None:
@@ -594,7 +608,7 @@ class TantivyBackend:
             List of word suggestions ordered by frequency, then alphabetically
         """
         self._ensure_open()
-        normalized_term = _ascii_fold(term.lower())
+        normalized_term = ascii_fold(term.lower())
 
         searcher = self._index.searcher()
 

src/documents/search/_normalize.py

@@ -0,0 +1,8 @@
+from __future__ import annotations
+
+import unicodedata
+
+
+def ascii_fold(text: str) -> str:
+    """Normalize unicode text to ASCII equivalents for search consistency."""
+    return unicodedata.normalize("NFD", text).encode("ascii", "ignore").decode()

src/documents/search/_query.py

@@ -12,6 +12,8 @@ import tantivy
 from dateutil.relativedelta import relativedelta
 from django.conf import settings
 
+from documents.search._normalize import ascii_fold
+
 if TYPE_CHECKING:
     from datetime import tzinfo
 
@@ -51,6 +53,7 @@ _WHOOSH_REL_RANGE_RE = regex.compile(
 )
 # Whoosh-style 8-digit date: field:YYYYMMDD — field-aware so timezone can be applied correctly
 _DATE8_RE = regex.compile(r"(?P<field>\w+):(?P<date8>\d{8})\b")
+_SIMPLE_QUERY_TOKEN_RE = regex.compile(r"\S+")
 
 
 def _fmt(dt: datetime) -> str:
@@ -436,7 +439,37 @@ DEFAULT_SEARCH_FIELDS = [
     "document_type",
     "tag",
 ]
+SIMPLE_SEARCH_FIELDS = ["simple_title", "simple_content"]
+TITLE_SEARCH_FIELDS = ["simple_title"]
 _FIELD_BOOSTS = {"title": 2.0}
+_SIMPLE_FIELD_BOOSTS = {"simple_title": 2.0}
+
+
+def _build_simple_field_query(
+    index: tantivy.Index,
+    field: str,
+    tokens: list[str],
+) -> tantivy.Query:
+    patterns = []
+    for idx, token in enumerate(tokens):
+        escaped = regex.escape(token)
+        # For multi-token substring search, only the first token can begin mid-word.
+        # Later tokens follow a whitespace boundary in the original query, so anchor
+        # them to the start of the next indexed token to reduce false positives like
+        # matching "Z-Berichte 16" for the query "Z-Berichte 6".
+        if idx == 0:
+            patterns.append(f".*{escaped}.*")
+        else:
+            patterns.append(f"{escaped}.*")
+    if len(patterns) == 1:
+        query = tantivy.Query.regex_query(index.schema, field, patterns[0])
+    else:
+        query = tantivy.Query.regex_phrase_query(index.schema, field, patterns)
+
+    boost = _SIMPLE_FIELD_BOOSTS.get(field, 1.0)
+    if boost > 1.0:
+        return tantivy.Query.boost_query(query, boost)
+    return query
 
 
 def parse_user_query(
@@ -495,3 +528,52 @@ def parse_user_query(
         )
 
     return exact
+
+
+def parse_simple_query(
+    index: tantivy.Index,
+    raw_query: str,
+    fields: list[str],
+) -> tantivy.Query:
+    """
+    Parse a plain-text query using Tantivy over a restricted field set.
+
+    Query string is escaped and normalized to be treated as "simple" text query.
+    """
+    tokens = [
+        ascii_fold(token.lower())
+        for token in _SIMPLE_QUERY_TOKEN_RE.findall(raw_query, timeout=_REGEX_TIMEOUT)
+    ]
+    tokens = [token for token in tokens if token]
+    if not tokens:
+        return tantivy.Query.empty_query()
+
+    field_queries = [
+        (tantivy.Occur.Should, _build_simple_field_query(index, field, tokens))
+        for field in fields
+    ]
+    if len(field_queries) == 1:
+        return field_queries[0][1]
+    return tantivy.Query.boolean_query(field_queries)
+
+
+def parse_simple_text_query(
+    index: tantivy.Index,
+    raw_query: str,
+) -> tantivy.Query:
+    """
+    Parse a plain-text query over title/content for simple search inputs.
+    """
+
+    return parse_simple_query(index, raw_query, SIMPLE_SEARCH_FIELDS)
+
+
+def parse_simple_title_query(
+    index: tantivy.Index,
+    raw_query: str,
+) -> tantivy.Query:
+    """
+    Parse a plain-text query over the title field only.
+    """
+
+    return parse_simple_query(index, raw_query, TITLE_SEARCH_FIELDS)

src/documents/search/_schema.py

@@ -53,6 +53,18 @@ def build_schema() -> tantivy.Schema:
     # CJK support - not stored, indexed only
     sb.add_text_field("bigram_content", stored=False, tokenizer_name="bigram_analyzer")
 
+    # Simple substring search support for title/content - not stored, indexed only
+    sb.add_text_field(
+        "simple_title",
+        stored=False,
+        tokenizer_name="simple_search_analyzer",
+    )
+    sb.add_text_field(
+        "simple_content",
+        stored=False,
+        tokenizer_name="simple_search_analyzer",
+    )
+
     # Autocomplete prefix scan - stored, not indexed
     sb.add_text_field("autocomplete_word", stored=True, tokenizer_name="raw")
 

src/documents/search/_tokenizer.py

@@ -70,6 +70,7 @@ def register_tokenizers(index: tantivy.Index, language: str | None) -> None:
     index.register_tokenizer("paperless_text", _paperless_text(language))
     index.register_tokenizer("simple_analyzer", _simple_analyzer())
     index.register_tokenizer("bigram_analyzer", _bigram_analyzer())
+    index.register_tokenizer("simple_search_analyzer", _simple_search_analyzer())
     # Fast-field tokenizer required for fast=True text fields in the schema
     index.register_fast_field_tokenizer("simple_analyzer", _simple_analyzer())
 
@@ -114,3 +115,16 @@ def _bigram_analyzer() -> tantivy.TextAnalyzer:
         .filter(tantivy.Filter.lowercase())
         .build()
     )
+
+
+def _simple_search_analyzer() -> tantivy.TextAnalyzer:
+    """Tokenizer for simple substring search fields: non-whitespace chunks -> remove_long(65) -> lowercase -> ascii_fold."""
+    return (
+        tantivy.TextAnalyzerBuilder(
+            tantivy.Tokenizer.regex(r"\S+"),
+        )
+        .filter(tantivy.Filter.remove_long(65))
+        .filter(tantivy.Filter.lowercase())
+        .filter(tantivy.Filter.ascii_fold())
+        .build()
+    )

src/documents/tests/search/test_backend.py

@@ -5,6 +5,7 @@ from documents.models import CustomField
 from documents.models import CustomFieldInstance
 from documents.models import Document
 from documents.models import Note
+from documents.search._backend import SearchMode
 from documents.search._backend import TantivyBackend
 from documents.search._backend import get_backend
 from documents.search._backend import reset_backend
@@ -46,6 +47,258 @@ class TestWriteBatch:
 class TestSearch:
     """Test search functionality."""
 
+    def test_text_mode_limits_default_search_to_title_and_content(
+        self,
+        backend: TantivyBackend,
+    ):
+        """Simple text mode must not match metadata-only fields."""
+        doc = Document.objects.create(
+            title="Invoice document",
+            content="monthly statement",
+            checksum="TXT1",
+            pk=9,
+        )
+        backend.add_or_update(doc)
+
+        metadata_only = backend.search(
+            "document_type:invoice",
+            user=None,
+            page=1,
+            page_size=10,
+            sort_field=None,
+            sort_reverse=False,
+            search_mode=SearchMode.TEXT,
+        )
+        assert metadata_only.total == 0
+
+        content_match = backend.search(
+            "monthly",
+            user=None,
+            page=1,
+            page_size=10,
+            sort_field=None,
+            sort_reverse=False,
+            search_mode=SearchMode.TEXT,
+        )
+        assert content_match.total == 1
+
+    def test_title_mode_limits_default_search_to_title_only(
+        self,
+        backend: TantivyBackend,
+    ):
+        """Title mode must not match content-only terms."""
+        doc = Document.objects.create(
+            title="Invoice document",
+            content="monthly statement",
+            checksum="TXT2",
+            pk=10,
+        )
+        backend.add_or_update(doc)
+
+        content_only = backend.search(
+            "monthly",
+            user=None,
+            page=1,
+            page_size=10,
+            sort_field=None,
+            sort_reverse=False,
+            search_mode=SearchMode.TITLE,
+        )
+        assert content_only.total == 0
+
+        title_match = backend.search(
+            "invoice",
+            user=None,
+            page=1,
+            page_size=10,
+            sort_field=None,
+            sort_reverse=False,
+            search_mode=SearchMode.TITLE,
+        )
+        assert title_match.total == 1
+
+    def test_text_mode_matches_partial_term_substrings(
+        self,
+        backend: TantivyBackend,
+    ):
+        """Simple text mode should support substring matching within tokens."""
+        doc = Document.objects.create(
+            title="Account access",
+            content="password reset instructions",
+            checksum="TXT3",
+            pk=11,
+        )
+        backend.add_or_update(doc)
+
+        prefix_match = backend.search(
+            "pass",
+            user=None,
+            page=1,
+            page_size=10,
+            sort_field=None,
+            sort_reverse=False,
+            search_mode=SearchMode.TEXT,
+        )
+        assert prefix_match.total == 1
+
+        infix_match = backend.search(
+            "sswo",
+            user=None,
+            page=1,
+            page_size=10,
+            sort_field=None,
+            sort_reverse=False,
+            search_mode=SearchMode.TEXT,
+        )
+        assert infix_match.total == 1
+
+        phrase_match = backend.search(
+            "sswo re",
+            user=None,
+            page=1,
+            page_size=10,
+            sort_field=None,
+            sort_reverse=False,
+            search_mode=SearchMode.TEXT,
+        )
+        assert phrase_match.total == 1
+
+    def test_text_mode_does_not_match_on_partial_term_overlap(
+        self,
+        backend: TantivyBackend,
+    ):
+        """Simple text mode should not match documents that merely share partial fragments."""
+        doc = Document.objects.create(
+            title="Adobe Acrobat PDF Files",
+            content="Lorem ipsum dolor sit amet, consectetur adipiscing elit.",
+            checksum="TXT7",
+            pk=13,
+        )
+        backend.add_or_update(doc)
+
+        non_match = backend.search(
+            "raptor",
+            user=None,
+            page=1,
+            page_size=10,
+            sort_field=None,
+            sort_reverse=False,
+            search_mode=SearchMode.TEXT,
+        )
+        assert non_match.total == 0
+
+    def test_text_mode_anchors_later_query_tokens_to_token_starts(
+        self,
+        backend: TantivyBackend,
+    ):
+        """Multi-token simple search should not match later tokens in the middle of a word."""
+        exact_doc = Document.objects.create(
+            title="Z-Berichte 6",
+            content="monthly report",
+            checksum="TXT9",
+            pk=15,
+        )
+        prefix_doc = Document.objects.create(
+            title="Z-Berichte 60",
+            content="monthly report",
+            checksum="TXT10",
+            pk=16,
+        )
+        false_positive = Document.objects.create(
+            title="Z-Berichte 16",
+            content="monthly report",
+            checksum="TXT11",
+            pk=17,
+        )
+        backend.add_or_update(exact_doc)
+        backend.add_or_update(prefix_doc)
+        backend.add_or_update(false_positive)
+
+        results = backend.search(
+            "Z-Berichte 6",
+            user=None,
+            page=1,
+            page_size=10,
+            sort_field=None,
+            sort_reverse=False,
+            search_mode=SearchMode.TEXT,
+        )
+        result_ids = {hit["id"] for hit in results.hits}
+
+        assert exact_doc.id in result_ids
+        assert prefix_doc.id in result_ids
+        assert false_positive.id not in result_ids
+
+    def test_text_mode_ignores_queries_without_searchable_tokens(
+        self,
+        backend: TantivyBackend,
+    ):
+        """Simple text mode should safely return no hits for symbol-only strings."""
+        doc = Document.objects.create(
+            title="Guide",
+            content="This is a guide.",
+            checksum="TXT8",
+            pk=14,
+        )
+        backend.add_or_update(doc)
+
+        no_tokens = backend.search(
+            "!!!",
+            user=None,
+            page=1,
+            page_size=10,
+            sort_field=None,
+            sort_reverse=False,
+            search_mode=SearchMode.TEXT,
+        )
+        assert no_tokens.total == 0
+
+    def test_title_mode_matches_partial_term_substrings(
+        self,
+        backend: TantivyBackend,
+    ):
+        """Title mode should support substring matching within title tokens."""
+        doc = Document.objects.create(
+            title="Password guide",
+            content="reset instructions",
+            checksum="TXT4",
+            pk=12,
+        )
+        backend.add_or_update(doc)
+
+        prefix_match = backend.search(
+            "pass",
+            user=None,
+            page=1,
+            page_size=10,
+            sort_field=None,
+            sort_reverse=False,
+            search_mode=SearchMode.TITLE,
+        )
+        assert prefix_match.total == 1
+
+        infix_match = backend.search(
+            "sswo",
+            user=None,
+            page=1,
+            page_size=10,
+            sort_field=None,
+            sort_reverse=False,
+            search_mode=SearchMode.TITLE,
+        )
+        assert infix_match.total == 1
+
+        phrase_match = backend.search(
+            "sswo gu",
+            user=None,
+            page=1,
+            page_size=10,
+            sort_field=None,
+            sort_reverse=False,
+            search_mode=SearchMode.TITLE,
+        )
+        assert phrase_match.total == 1
+
     def test_scores_normalised_top_hit_is_one(self, backend: TantivyBackend):
         """Search scores must be normalized so top hit has score 1.0 for UI consistency."""
         for i, title in enumerate(["bank invoice", "bank statement", "bank receipt"]):

src/documents/tests/search/test_tokenizer.py

@@ -8,6 +8,7 @@ import tantivy
 
 from documents.search._tokenizer import _bigram_analyzer
 from documents.search._tokenizer import _paperless_text
+from documents.search._tokenizer import _simple_search_analyzer
 from documents.search._tokenizer import register_tokenizers
 
 if TYPE_CHECKING:
@@ -41,6 +42,20 @@ class TestTokenizers:
         idx.register_tokenizer("bigram_analyzer", _bigram_analyzer())
         return idx
 
+    @pytest.fixture
+    def simple_search_index(self) -> tantivy.Index:
+        """Index with simple-search field for Latin substring tests."""
+        sb = tantivy.SchemaBuilder()
+        sb.add_text_field(
+            "simple_content",
+            stored=False,
+            tokenizer_name="simple_search_analyzer",
+        )
+        schema = sb.build()
+        idx = tantivy.Index(schema, path=None)
+        idx.register_tokenizer("simple_search_analyzer", _simple_search_analyzer())
+        return idx
+
     def test_ascii_fold_finds_accented_content(
         self,
         content_index: tantivy.Index,
@@ -66,6 +81,24 @@ class TestTokenizers:
         q = bigram_index.parse_query("東京", ["bigram_content"])
         assert bigram_index.searcher().search(q, limit=5).count == 1
 
+    def test_simple_search_analyzer_supports_regex_substrings(
+        self,
+        simple_search_index: tantivy.Index,
+    ) -> None:
+        """Whitespace-preserving simple search analyzer supports substring regex matching."""
+        writer = simple_search_index.writer()
+        doc = tantivy.Document()
+        doc.add_text("simple_content", "tag:invoice password-reset")
+        writer.add_document(doc)
+        writer.commit()
+        simple_search_index.reload()
+        q = tantivy.Query.regex_query(
+            simple_search_index.schema,
+            "simple_content",
+            ".*sswo.*",
+        )
+        assert simple_search_index.searcher().search(q, limit=5).count == 1
+
     def test_unsupported_language_logs_warning(self, caplog: LogCaptureFixture) -> None:
         """Unsupported language codes should log a warning and disable stemming gracefully."""
         sb = tantivy.SchemaBuilder()

src/documents/tests/test_api_search.py

@@ -91,6 +91,135 @@ class TestDocumentSearchApi(DirectoriesMixin, APITestCase):
         self.assertEqual(response.data["count"], 0)
         self.assertEqual(len(results), 0)
 
+    def test_simple_text_search(self) -> None:
+        tagged = Tag.objects.create(name="invoice")
+        matching_doc = Document.objects.create(
+            title="Quarterly summary",
+            content="Monthly bank report",
+            checksum="T1",
+            pk=11,
+        )
+        matching_doc.tags.add(tagged)
+
+        metadata_only_doc = Document.objects.create(
+            title="Completely unrelated",
+            content="No matching terms here",
+            checksum="T2",
+            pk=12,
+        )
+        metadata_only_doc.tags.add(tagged)
+
+        backend = get_backend()
+        backend.add_or_update(matching_doc)
+        backend.add_or_update(metadata_only_doc)
+
+        response = self.client.get("/api/documents/?text=monthly")
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        self.assertEqual(response.data["count"], 1)
+        self.assertEqual(response.data["results"][0]["id"], matching_doc.id)
+
+        response = self.client.get("/api/documents/?text=tag:invoice")
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        self.assertEqual(response.data["count"], 0)
+
+    def test_simple_text_search_matches_substrings(self) -> None:
+        matching_doc = Document.objects.create(
+            title="Quarterly summary",
+            content="Password reset instructions",
+            checksum="T5",
+            pk=15,
+        )
+
+        backend = get_backend()
+        backend.add_or_update(matching_doc)
+
+        response = self.client.get("/api/documents/?text=pass")
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        self.assertEqual(response.data["count"], 1)
+        self.assertEqual(response.data["results"][0]["id"], matching_doc.id)
+
+        response = self.client.get("/api/documents/?text=sswo")
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        self.assertEqual(response.data["count"], 1)
+        self.assertEqual(response.data["results"][0]["id"], matching_doc.id)
+
+        response = self.client.get("/api/documents/?text=sswo re")
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        self.assertEqual(response.data["count"], 1)
+        self.assertEqual(response.data["results"][0]["id"], matching_doc.id)
+
+    def test_simple_text_search_does_not_match_on_partial_term_overlap(self) -> None:
+        non_matching_doc = Document.objects.create(
+            title="Adobe Acrobat PDF Files",
+            content="Lorem ipsum dolor sit amet, consectetur adipiscing elit.",
+            checksum="T7",
+            pk=17,
+        )
+
+        backend = get_backend()
+        backend.add_or_update(non_matching_doc)
+
+        response = self.client.get("/api/documents/?text=raptor")
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        self.assertEqual(response.data["count"], 0)
+
+    def test_simple_title_search(self) -> None:
+        title_match = Document.objects.create(
+            title="Quarterly summary",
+            content="No matching content here",
+            checksum="T3",
+            pk=13,
+        )
+        content_only = Document.objects.create(
+            title="Completely unrelated",
+            content="Quarterly summary appears only in content",
+            checksum="T4",
+            pk=14,
+        )
+
+        backend = get_backend()
+        backend.add_or_update(title_match)
+        backend.add_or_update(content_only)
+
+        response = self.client.get("/api/documents/?title_search=quarterly")
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        self.assertEqual(response.data["count"], 1)
+        self.assertEqual(response.data["results"][0]["id"], title_match.id)
+
+    def test_simple_title_search_matches_substrings(self) -> None:
+        title_match = Document.objects.create(
+            title="Password handbook",
+            content="No matching content here",
+            checksum="T6",
+            pk=16,
+        )
+
+        backend = get_backend()
+        backend.add_or_update(title_match)
+
+        response = self.client.get("/api/documents/?title_search=pass")
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        self.assertEqual(response.data["count"], 1)
+        self.assertEqual(response.data["results"][0]["id"], title_match.id)
+
+        response = self.client.get("/api/documents/?title_search=sswo")
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        self.assertEqual(response.data["count"], 1)
+        self.assertEqual(response.data["results"][0]["id"], title_match.id)
+
+        response = self.client.get("/api/documents/?title_search=sswo hand")
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        self.assertEqual(response.data["count"], 1)
+        self.assertEqual(response.data["results"][0]["id"], title_match.id)
+
+    def test_search_rejects_multiple_search_modes(self) -> None:
+        response = self.client.get("/api/documents/?text=bank&query=bank")
+        self.assertEqual(response.status_code, status.HTTP_400_BAD_REQUEST)
+        self.assertEqual(
+            response.data["detail"],
+            "Specify only one of text, title_search, query, or more_like_id.",
+        )
+
     def test_search_returns_all_for_api_version_9(self) -> None:
         d1 = Document.objects.create(
             title="invoice",
@@ -1493,6 +1622,31 @@ class TestDocumentSearchApi(DirectoriesMixin, APITestCase):
         self.assertEqual(results["custom_fields"][0]["id"], custom_field1.id)
         self.assertEqual(results["workflows"][0]["id"], workflow1.id)
 
+    def test_global_search_db_only_limits_documents_to_title_matches(self) -> None:
+        title_match = Document.objects.create(
+            title="bank statement",
+            content="no additional terms",
+            checksum="GS1",
+            pk=21,
+        )
+        content_only = Document.objects.create(
+            title="not a title match",
+            content="bank appears only in content",
+            checksum="GS2",
+            pk=22,
+        )
+
+        backend = get_backend()
+        backend.add_or_update(title_match)
+        backend.add_or_update(content_only)
+
+        self.client.force_authenticate(self.user)
+
+        response = self.client.get("/api/search/?query=bank&db_only=true")
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        self.assertEqual(len(response.data["documents"]), 1)
+        self.assertEqual(response.data["documents"][0]["id"], title_match.id)
+
     def test_global_search_filters_owned_mail_objects(self) -> None:
         user1 = User.objects.create_user("mail-search-user")
         user2 = User.objects.create_user("other-mail-search-user")

src/documents/views.py

@@ -1995,11 +1995,23 @@ class ChatStreamingView(GenericAPIView):
     list=extend_schema(
         description="Document views including search",
         parameters=[
+            OpenApiParameter(
+                name="text",
+                type=OpenApiTypes.STR,
+                location=OpenApiParameter.QUERY,
+                description="Simple Tantivy-backed text search query string",
+            ),
+            OpenApiParameter(
+                name="title_search",
+                type=OpenApiTypes.STR,
+                location=OpenApiParameter.QUERY,
+                description="Simple Tantivy-backed title-only search query string",
+            ),
             OpenApiParameter(
                 name="query",
                 type=OpenApiTypes.STR,
                 location=OpenApiParameter.QUERY,
-                description="Advanced search query string",
+                description="Advanced Tantivy search query string",
             ),
             OpenApiParameter(
                 name="full_perms",
@@ -2025,17 +2037,22 @@ class ChatStreamingView(GenericAPIView):
     ),
 )
 class UnifiedSearchViewSet(DocumentViewSet):
+    SEARCH_PARAM_NAMES = ("text", "title_search", "query", "more_like_id")
+
     def get_serializer_class(self):
         if self._is_search_request():
             return SearchResultSerializer
         else:
             return DocumentSerializer
 
+    def _get_active_search_params(self, request: Request | None = None) -> list[str]:
+        request = request or self.request
+        return [
+            param for param in self.SEARCH_PARAM_NAMES if param in request.query_params
+        ]
+
     def _is_search_request(self):
-        return (
-            "query" in self.request.query_params
-            or "more_like_id" in self.request.query_params
-        )
+        return bool(self._get_active_search_params())
 
     def list(self, request, *args, **kwargs):
         if not self._is_search_request():
@@ -2043,6 +2060,7 @@ class UnifiedSearchViewSet(DocumentViewSet):
 
         from documents.search import TantivyRelevanceList
         from documents.search import get_backend
+        from documents.search._backend import SearchMode
 
         try:
             backend = get_backend()
@@ -2050,9 +2068,31 @@ class UnifiedSearchViewSet(DocumentViewSet):
             filtered_qs = self.filter_queryset(self.get_queryset())
 
             user = None if request.user.is_superuser else request.user
+            active_search_params = self._get_active_search_params(request)
 
-            if "query" in request.query_params:
-                query_str = request.query_params["query"]
+            if len(active_search_params) > 1:
+                raise ValidationError(
+                    {
+                        "detail": _(
+                            "Specify only one of text, title_search, query, or more_like_id.",
+                        ),
+                    },
+                )
+
+            if (
+                "text" in request.query_params
+                or "title_search" in request.query_params
+                or "query" in request.query_params
+            ):
+                if "text" in request.query_params:
+                    search_mode = SearchMode.TEXT
+                    query_str = request.query_params["text"]
+                elif "title_search" in request.query_params:
+                    search_mode = SearchMode.TITLE
+                    query_str = request.query_params["title_search"]
+                else:
+                    search_mode = SearchMode.QUERY
+                    query_str = request.query_params["query"]
                 results = backend.search(
                     query_str,
                     user=user,
@@ -2060,6 +2100,7 @@ class UnifiedSearchViewSet(DocumentViewSet):
                     page_size=10000,
                     sort_field=None,
                     sort_reverse=False,
+                    search_mode=search_mode,
                 )
             else:
                 # more_like_id — validate permission on the seed document first
@@ -2132,6 +2173,8 @@ class UnifiedSearchViewSet(DocumentViewSet):
             if str(e.detail) == str(invalid_more_like_id_message):
                 return HttpResponseForbidden(invalid_more_like_id_message)
             return HttpResponseForbidden(_("Insufficient permissions."))
+        except ValidationError:
+            raise
         except Exception as e:
             logger.warning(f"An error occurred listing search results: {e!s}")
             return HttpResponseBadRequest(
@@ -3003,6 +3046,9 @@ class GlobalSearchView(PassUserMixin):
     serializer_class = SearchResultSerializer
 
     def get(self, request, *args, **kwargs):
+        from documents.search import get_backend
+        from documents.search._backend import SearchMode
+
         query = request.query_params.get("query", None)
         if query is None:
             return HttpResponseBadRequest("Query required")
@@ -3019,25 +3065,25 @@ class GlobalSearchView(PassUserMixin):
                 "view_document",
                 Document,
             )
-            # First search by title
-            docs = all_docs.filter(title__icontains=query)
-            if not db_only and len(docs) < OBJECT_LIMIT:
-                # If we don't have enough results, search by content.
-                # Over-fetch from Tantivy (no permission filter) and rely on
-                # the ORM all_docs queryset for authoritative permission gating.
-                from documents.search import get_backend
-
+            if db_only:
+                docs = all_docs.filter(title__icontains=query)[:OBJECT_LIMIT]
+            else:
+                user = None if request.user.is_superuser else request.user
                 fts_results = get_backend().search(
                     query,
-                    user=None,
+                    user=user,
                     page=1,
                     page_size=1000,
                     sort_field=None,
                     sort_reverse=False,
+                    search_mode=SearchMode.TEXT,
                 )
-                fts_ids = {h["id"] for h in fts_results.hits}
-                docs = docs | all_docs.filter(id__in=fts_ids)
-            docs = docs[:OBJECT_LIMIT]
+                docs_by_id = all_docs.in_bulk([hit["id"] for hit in fts_results.hits])
+                docs = [
+                    docs_by_id[hit["id"]]
+                    for hit in fts_results.hits
+                    if hit["id"] in docs_by_id
+                ][:OBJECT_LIMIT]
         saved_views = (
             get_objects_for_user_owner_aware(
                 request.user,