আমি আমার উপাদানগুলিতে একটি ফর্মআরির মাধ্যমে পুনরাবৃত্তি করার চেষ্টা করছি তবে আমি নিম্নলিখিত ত্রুটিটি পেয়েছি
Error: Cannot find control with unspecified name attribute
আমার ক্লাস ফাইলটিতে যুক্তিটি কেমন দেখাচ্ছে
export class AreasFormComponent implements OnInit {
public initialState: any;
public areasForm: FormGroup;
constructor(private fb: FormBuilder) { }
private area(): any {
return this.fb.group({
name: ['', [Validators.required]],
latLong: ['', [Validators.required]],
details: ['', [Validators.required]]
});
}
public ngOnInit(): void {
this.areasForm = this.fb.group({
name: ['', [Validators.required]],
areas: this.fb.array([this.area()])
});
}
}
এবং আমার টেম্পলেট ফাইল
<form class="areas-form" [formGroup]="areasForm" (ngSubmit)="onSubmit(areasForm.values)">
<md-input-container class="full-width">
<input mdInput placeholder="Location Name" type="text" formControlName="name" required>
<md-error *ngIf="areasForm.get('name').hasError('required')">Please enter the locationName</md-error>
</md-input-container>
<md-grid-list cols="1" [formArrayName]="areas">
<md-grid-tile formGroupName="i" colspan="1" rowHeight="62px" *ngFor="let area of areasForm.controls.areas.controls; let i = index ">
<md-grid-list cols="3" rowHeight="60px">
<md-grid-tile colspan="1">
<md-input-container class="full-width">
<input mdInput placeholder="Area Name" type="text" formControlName="name" required>
<md-error *ngIf="areasForm.get('areas').controls[i].name.hasError('required')">Please enter the area name</md-error>
</md-input-container>
</md-grid-tile>
<md-grid-tile colspan="1">
<md-input-container class="full-width">
<input mdInput placeholder="details" type="text" formControlName="details" required>
<md-error *ngIf="areasForm.get('areas').controls[i].name.hasError('required')">Please enter the locationName</md-error>
</md-input-container>
</md-grid-tile>
<md-grid-tile colspan="1">
<button md-fab (click)="remove(i)"><md-icon>subtract</md-icon>Remove Area</button>
</md-grid-tile>
</md-grid-list>
</md-grid-tile>
</md-grid-list>
<button type="submit" [disabled]="areasForm.invalid" md-raised-button color="primary">Submit</button>
</form>