Question

我确实有这个带有Angular Material属性的HTML：

<div formArrayName="emails">
    <div *ngFor="let email of emails.controls; index as i" [formGroupName]="i">             
        <mat-input-container>
            <input matInput formControlName=i placeholder="Email- Address">
        </mat-input-container> 
    </div>
</div>

输入字段中未显示 email.value 的值，而formControlName = i不起作用。有谁知道我要做什么才能在输入字段中显示电子邮件地址？

电子邮件看起来像这样：

 this.form = this.formBuilder.group({    
    emails: this.formBuilder.array([]),
    ...
 });

并在从后端或可观察的数据中获取数据之后填充：

for(let i = 0; i < this.contact.emails.length; i++) {
    this.addEmail();
  }

addEmail() {
    let email = new FormControl('');
    let emails: FormArray = this.form.controls['emails'] as FormArray;
    emails.push(email);
}

let emails: FormArray = this.form.controls['emails'] as FormArray;
for(let i = 0; i < this.contact.emails.length; i++) {      
    emails.controls[i+''].patchValue(this.contact.emails[i]);   
}

Answer 1

addEmail() {
    const controls = <FormArray>this.form.controls['emails'];

    for(let i = 0; i < this.contact.emails.length; i++) {
        let email = this.formBuilder.group({
          email: [{value: this.contact.emails[i], disabled: false}, [Validators.required]]
        });
        controls.push(email);
    }
}

角度材料MatInput - ＆gt;值

1 个答案: