I am working on Angular Reactive forms, I have added a couple of FormControl into FormArray dynamically, but I am getting issue to reference those FormControls in my template while binding them with formControlName. In template I assigned loop index variable "i" to formControlName but its not working. I get "No value accessor for form control with path" by binding controls with formControlName. here is my component class code:
export class Control {
constructor(public controlType?: string, public label?: string, public required?: boolean, public placeholder?: string,
public options?: string[], public value?: string) { }
}
export class FormComponent implements OnInit {
reviewForm: FormGroup;
constructor(public formService: FormService, public dialog: MdDialog) { }
selectedControl: any = null;
label: string;
ngOnInit() {
this.reviewForm = new FormGroup({
'controlArray': new FormArray([
])
});
}
addControl() {
const myControl: Control = new Control(this.selectedControl.name, this.label, this.isRequired,
this.selectedControl.attributes.value, this.selectedControl.attributes.options, 'null');
var control: FormControl = new FormControl(myControl);
(<FormArray>this.reviewForm.get('controlArray')).push(control);
}
}
And it is my component's template:
<form [formGroup]="reviewForm" (ngSubmit)="onSubmit()">
<div class="example-label">
<span class='block'>
<span *ngIf="selectedForm">
<h2 class="example-heading">{{displayForm}} </h2>
</span>
<div formArrayName="controlArray">
<div *ngFor="let control of reviewForm.get('controlArray').controls; let i = index">
<table>
<tr>
<span *ngIf="control.value">
<td>
<label>{{control.value.label}}</label>
</td>
<td><span *ngIf="control.value.controlType == 'select'">
<md-select placeholder="{{control.value.label}}" [formControlName]="i" >
<md-option *ngFor="let option of control.value.options; let i=index"
[value]="option">{{control.value.options[i]}}</md-option>
</md-select>
</span></td>
<td> <span *ngIf="control.value.controlType == 'text'">
<md-form-field class="example-full-width">
<input mdInput type="text" placeholder="{{control.value.placeholder}}" [formControlName]="i" >
</md-form-field>
</span></td>
<td> <span *ngIf="control.value.controlType == 'radio'">
<md-radio-group>
<span *ngFor="let option of control.value.options">
<md-radio-button name="gender" value="{{option}}" [formControlName]="i" >{{option}} </md-radio-button>
</span>
</md-radio-group>
</span>
</td>
<td> <span *ngIf="control.value.controlType == 'checkbox'">
<md-checkbox value="{{control.value.controlType}}" [formControlName]="i" > </md-checkbox>
</span></td>
<td> <span *ngIf="control.value.controlType == 'textarea'">
<textarea name="Comment" id="" cols="30" rows="10" [formControlName]="i" ></textarea>
</span></td>
<td> <span *ngIf="control.value.controlType == 'button'">
<button md-raised-button value="{{control.value}}" [formControlName]="i" >Button</button>
</span> </td>
</span>
</tr>
</table>
</div>
</div>
</span>
</div>
</form>
In my component class I only have FormArray in FormGroup. In addControl function I made a custom control and pass this control as a first parameter to a FormControl. Afterwards I push this FormControl into my FormArray. Please help, in template How do I associate formControlName to FormControls. Thanks
*ngIf="control.value[formControlName]=" i ""what's this syntax? – Stumercontrolis an object, therefore you need to use a formGroup instead of a formcontrol. – Shendcontrolfor anything else, push a formgroup with the properties and values you want. – Shend