Basic frontend implementation

src-ui/src/app/components/document-detail/document-detail.component.html

@@ -186,6 +186,16 @@
                       [horizontal]="true"
                       [error]="getCustomFieldError(i)"></pngx-input-document-link>
                     }
+                    @case (CustomFieldDataType.Select) {
+                      <pngx-input-select formControlName="value"
+                      [title]="getCustomFieldFromInstance(fieldInstance)?.name"
+                      [itemsArray]="getCustomFieldFromInstance(fieldInstance)?.extra_data"
+                      [allowNull]="true"
+                      [horizontal]="true"
+                      [removable]="userIsOwner"
+                      (removed)="removeField(fieldInstance)"
+                      [error]="getCustomFieldError(i)"></pngx-input-select>
+                    }
                   }
                 </div>
               }