Javascript 提交论坛时未显示子表单中的角材料2 mat错误
将带有输入的子组件放置在父窗体中,并以无效方式提交不会仅在父窗体中显示子组件中的错误。子项中的mat错误仅在单击输入时显示 使用此父窗体复制错误Javascript 提交论坛时未显示子表单中的角材料2 mat错误,javascript,angular,forms,angular-material2,Javascript,Angular,Forms,Angular Material2,将带有输入的子组件放置在父窗体中,并以无效方式提交不会仅在父窗体中显示子组件中的错误。子项中的mat错误仅在单击输入时显示 使用此父窗体复制错误 @Component({ selector: 'lyx-parent-form', template: ` <form novalidate autocomplete="off" role="form" [formGroup]="form" (ngSubmit)="onSubmit()"> <m
@Component({
selector: 'lyx-parent-form',
template: `
<form novalidate autocomplete="off" role="form" [formGroup]="form" (ngSubmit)="onSubmit()">
<mat-form-field>
<input type="password" formControlName="currentPassword" matInput placeholder="current password">
<mat-error *ngIf="form.get('currentPassword').hasError('required')">current required</mat-error>
</mat-form-field>
<lyx-child [form]="form"></lyx-child>
<button type="submit">submit</button>
</form>`
})
export class ParentFormComponent {
form: FormGroup;
constructor(fb: FormBuilder) {
this.form = fb.group({'currentPassword': ['', [Validators.required]]});
}
onSubmit() {}
}
@组件({
选择器:“lyx父窗体”,
模板:`
所需电流
提交
`
})
导出类ParentFormComponent{
表格:表格组;
构造函数(fb:FormBuilder){
this.form=fb.group({'currentPassword':[''[Validators.required]]});
}
onSubmit(){}
}
子组件
@Component({
selector: 'lyx-child',
template: `
<div [formGroup]="form">
<mat-form-field>
<input type="password" formControlName="newPassword" matInput placeholder="password">
<mat-error *ngIf="form.get('newPassword').hasError('required')">Password Required</mat-error>
</mat-form-field>
</div> `
})
export class ChildComponent implements OnInit {
@Input() form: FormGroup;
ngOnInit(): void {
const newPassword = new FormControl('', Validators.compose([Validators.required]));
this.form.addControl('newPassword', newPassword);
}
}
@组件({
选择器:“lyx子对象”,
模板:`
需要密码
`
})
导出类ChildComponent实现OnInit{
@Input()表单:FormGroup;
ngOnInit():void{
const newPassword=newformcontrol(“”,Validators.compose([Validators.required]);
this.form.addControl('newPassword',newPassword);
}
}
在我能够更好地理解父/子表单交互方式之前,这里有一个解决方法
提交父表单时,手动将子“newPassword”控件设置为“toucted”
我提出了以下解决方案,它适用于任意数量的嵌套表单。要使用此指令,只需将
formSubmittedSync
添加到任何子表单组,例如
找到这个问题的解决方案了吗?没有,我想angular会在他们的更新中修复它,直到那时我会使用你的解决方法谢谢
onSubmit(): void {
this.form.controls.newPassowrd.markAsTouched({onlySelf: true});
}
import { Directive, SkipSelf } from "@angular/core";
import { FormGroupDirective, ControlContainer } from "@angular/forms";
@Directive({
selector: '[formSubmittedSync]'
})
export class FormSubmittedSyncDirective {
constructor(
@SkipSelf() private parentFormGroupDirective: FormGroupDirective,
private formGroupDirective: FormGroupDirective) {
this.parentFormGroupDirective.ngSubmit.asObservable().subscribe(() => {
(this.formGroupDirective as any).submitted = true;
this.formGroupDirective.ngSubmit.emit();
});
}
}