Frontend coerce empty display_fields to null

src-ui/src/app/services/rest/saved-view.service.spec.ts

@@ -114,6 +114,25 @@ describe(`Additional service tests for SavedViewService`, () => {
     ])
   })
 
+  it('should treat empty display_fields as null', () => {
+    subscription = service
+      .patch({
+        id: 1,
+        name: 'Saved View',
+        show_on_dashboard: true,
+        show_in_sidebar: true,
+        sort_field: 'name',
+        sort_reverse: true,
+        filter_rules: [],
+        display_fields: [],
+      })
+      .subscribe()
+    const req = httpTestingController.expectOne(
+      `${environment.apiBaseUrl}${endpoint}/1/`
+    )
+    expect(req.request.body.display_fields).toBeNull()
+  })
+
   beforeEach(() => {
     // Dont need to setup again
 

src-ui/src/app/services/rest/saved-view.service.ts

@@ -87,8 +87,11 @@ export class SavedViewService extends AbstractPaperlessService<SavedView> {
     return super.create(o).pipe(tap(() => this.reload()))
   }
 
-  update(o: SavedView) {
+  patch(o: SavedView): Observable<SavedView> {
-    return super.update(o).pipe(tap(() => this.reload()))
+    if (o.display_fields?.length === 0) {
+      o.display_fields = null
+    }
+    return super.patch(o)
   }
 
   patchMany(objects: SavedView[]): Observable<SavedView[]> {