我正在用ControlGroup構建一個表單,並且在其中加載了一個類對象。不過,我遇到了標題中提到的錯誤的一半。有些形式會加載,有些則不會。Angular 2 Typescript:TypeError:this.validator不是函數
我有一個類文件,如下所示:
export class User {
id: number;
email: string;
sign_in_count: number;
created_at: string;
first_name: string;
last_name: string;
birth_date: Date;
news_letter: boolean;
fb_id: string;
gender: boolean;
phone: string;
picture: any;
}
在我UserDetailComponent我加載類在這樣的控制:
export class UserDetailComponent implements OnInit {
user: User;
userDetailForm: ControlGroup;
constructor(
private form: FormBuilder,
private _userService: UserService,
private _router: Router,
private params: RouteSegment
) { }
ngOnInit() {
this.user = this._userService.getUser();
if (this.user === undefined) {
this._userService.getSingleUser(this.params.getParam('id'))
.subscribe(data => (this.user = data, this.setForm()));
} else {
this.setForm();
}
}
setForm() {
this.userDetailForm = this.form.group(this.user);
}
}
在最後一行出現錯誤,其中的stacktrace如下:
browser_adapter.ts:78 TypeError: this.validator is not a function
at Control.AbstractControl._runValidator (model.ts:146)
at Control.AbstractControl.updateValueAndValidity (model.ts:128)
at new Control (model.ts:282)
at FormBuilder.control (form_builder.ts:32)
at FormBuilder._createControl (form_builder.ts:66)
at eval (form_builder.ts:50)
at Function.StringMapWrapper.forEach (collection.ts:132)
at FormBuilder._reduceControls (form_builder.ts:49)
at FormBuilder.group (form_builder.ts:19)
at UserDetailComponent.setForm (user-detail.component.ts:95)
您可能需要在構造函數中創建表單,並且僅在來自'UserService'的數據到達時才更新值(或添加/刪除元素)。 –
什麼是FormBuilder?這是重要的嗎? –
@StianStandahl是的,它是@ angular/common的導入 - https://angular.io/docs/ts/latest/api/common/FormBuilder-class.html – Ruben