我能够从孩子那里获取值，但我需要验证我父组件中是否存在的值 .
parent.html :
<browser (notify)="onselect($event)" [template]="coreActivity" (onselect)="onselect($event)" formControlName="template" ></browser>
parent.ts :
export class CreateCommunityComponent implements OnInit { userForm: FormGroup; public tagarray=[]; coreActivity = [
{value: 'Professional', viewValue: 'Professional', tool: 'Forum' },
{value: 'Travel', viewValue: 'Travel', tool: 'quora'},
{value: 'Arts', viewValue: 'Arts', tool: 'stackoverflow'},
{value: 'Technology', viewValue: 'Technology', tool: 'quora'},
{value: 'Business', viewValue: 'Business', tool: 'Forum'},
{value: 'Science', viewValue: 'Science', tool: 'quora'},
{value: 'Education', viewValue: 'Education', tool: 'quora'}
]; visibility = [
{value: 'Public', viewValue: 'Public'},
{value: 'Private', viewValue: 'Private'},
{value: 'Moderate', viewValue: 'Moderate'}
]; tags = [
{value: 'tag-one', viewValue: 'tagone'},
{value: 'tag-two', viewValue: 'tagtwo' },
{value: 'tag-three', viewValue: 'tagthree'}
];
constructor(private dialog: MdDialog, private fb: FormBuilder,private router: Router) { this.createForm(); } createForm() {
this.userForm = this.fb.group({
domainName: ['', [Validators.required, Validators.pattern('[a-z.]{8,20}')]],
communityName: ['', Validators.required],
Purpose: ['', Validators.required],
visibility: ['Public', Validators.required],
template: ['',Validators.required],
tagSelection: ['', Validators.required],
termscondition: ['', Validators.required]
});
}
// check whether the card is clickable or not
onselect(selectedTemplate: any)
{
console.log(selectedTemplate);
return selectedTemplate;
}
在我验证子值是否存在时出错：
错误错误：表单控件的值访问器没有名称：'template'
1 回答
您需要将
ngDefaultControl添加到<browser>标记中 .希望这对你有用 .