Update entity-list.component.ts

ui-ngx/src/app/shared/components/entity/entity-list.component.ts

@@ -56,6 +56,11 @@ import { coerceBoolean } from '@shared/decorators/coercion';
       provide: NG_VALUE_ACCESSOR,
       useExisting: forwardRef(() => EntityListComponent),
       multi: true
+    },
+    {
+      provide: NG_VALIDATORS,
+      useExisting: forwardRef(() => EntityListComponent),
+      multi: true
     }
   ]
 })
@@ -203,6 +208,12 @@ export class EntityListComponent implements ControlValueAccessor, OnInit, AfterV
     this.dirty = true;
   }
 
+  validate(): ValidationErrors | null {
+    return this.entityListFormGroup.valid ? null : {
+      entities: {valid: false}
+    };
+  }
+
   private reset() {
     this.entities = [];
     this.entityListFormGroup.get('entities').setValue(this.entities);