我有一个使用子窗体组件的父窗体组件。我正在使用Angular反应形式。在子窗体组件中设置值没有问题,但是验证器不再起作用。在父表单中,我实例化了类似于以下内容的表单组:
this.editUserForm = this.fb.group ({
phone: ['123-456-1234'],
fax: [null],
email: [null],
website: [null],
editUserForm_Address : this.fb.group ({
address1: ['123 Elm Street', Validators.required],
address2: [null],
city: ['Dummy City', Validators.required],
state: ['Dummy State', Validators.required],
zipcode: ['11111', Validators.required],
country: ['USA', Validators.required]
})
});
父组件html使用子组件:
<form [formGroup] = "editUserForm">
<address-form formGroupName = "editUserForm_Address"></address-form>
</form>
子组件类如下:
export class AddressFormComponent implements OnInit {
public addressFormGroup: FormGroup;
@Input()
constructor(private controlContainer: ControlContainer) { }
ngOnInit() {
this.addressFormGroup = <FormGroup>this.controlContainer.control;
}
}
子组件html如下(示例仅以地址1为例):
<ng-container [formGroup] = "addressFormGroup">
<div class = "row">
<div class = "form-group col-12" [ngClass]="{'error': (addressFormGroup.controls['address1'].errors)">
<label for="street" >Address 1*</label>
<input placeholder = "Address 1" class="form-control" formControlName="address1">
<div *ngIf="(addressFormGroup.controls['address1'].errors)" class="error-msg">
<div [hidden]="!addressFormGroup.controls['address1'].errors.required"
class = "input_feedback">Address 1 is required.</div>
</div>
</div>
我对显示的值没有问题,例如address1的“ 123 Elm Street”。但是,当所有内容都仅在父表单中时,验证器不再像以前那样工作。我也尝试过使用setValidators()方法设置验证器,但这并不成功。
答案 0 :(得分:1)
我不确定确切的问题是什么,但是我能够在StackBlitz上重新创建您的表单,并且验证按预期进行。
我所做的只是将editUserForm_Address
formGroup
传递给子组件。
这里正在工作StackBlitz-> https://stackblitz.com/edit/angular-pbfuut
<form [formGroup] = "editUserForm">
<address-form [formGroup]="editUserForm.get('editUserForm_Address')"></address-form>
</form>
关键是将实际的formGroup
传递给子组件-> [formGroup]="editUserForm.get('editUserForm_Address')"