formGroup expects a FormGroup instance : angular 4

user_4460894 0
Viewed 7675

I have created a formGroup in angular 4 where user & organization are stored in object. Now i want to populate my formgroup using these two objects. In my ts I have done the following:

createForm(user: any) {
    this.userForm = this.fb.group({
      name: user.profileData.name,
      email: user.profileData.email,
      phone: user.profileData.mobileNumber,    
      orgForm: this.fb.group({
        name: [ user.organisation.name , [Validators.required]]
      })
    });
}

And in my view , I am doing something like this:

<form [formGroup]="userForm" class="user-form" (ngSubmit)="onSubmit()" novalidate>
      <div fxLayout="row">
        <div fxLayout="column" fxFlex="50%">
          <div class="form-group">
            <md-input-container class="full-width">
              <input mdInput placeholder="User Name" formControlName="name">
            </md-input-container>
          </div>
          <div class="form-group">
            <md-input-container class="full-width">
              <input mdInput placeholder="User Email" formControlName="email">
            </md-input-container>
          </div>
          <div class="form-group">
            <md-input-container class="full-width">
              <input mdInput placeholder="User Phone" formControlName="phone">
            </md-input-container>
          </div>
          <div class="form-group">
            <button md-raised-button type="submit" [disabled]="userForm.pristine">Save</button>
          </div>
        </div>
        <div fxLayout="column" fxFlex="50%" formGroupName="orgForm">
          <div class="form-group">
             <md-input-container class="full-width">
              <input mdInput placeholder="Organization Name" formControlName="name">
            </md-input-container> 
          </div>
        </div>
      </div>
    </form>

But I am getting the below error:

formGroup expects a FormGroup instance , please pass one in

Any Inputs?

formgroups angular-forms angular
2 Answers

Using your code and HTML, it works in this link without changing org. LINK

Just copy below code and stick it in the dyniamic-form.component.ts

import { Component, Input, OnInit }  from '@angular/core';
import { FormGroup, FormBuilder, Validators }                 from '@angular/forms';

import { QuestionBase }              from './question-base';
import { QuestionControlService }    from './question-control.service';

@Component({
  selector: 'app-dynamic-form',
  templateUrl: './dynamic-form.component.html',
  providers: [ QuestionControlService ]
})

export class DynamicFormComponent implements OnInit {

  @Input() questions: QuestionBase<any>[] = [];
  form: FormGroup;
  payLoad = '';

  constructor(private qcs: QuestionControlService, private fb: FormBuilder) {  }

  userForm;

  ngOnInit() {
    this.form = this.qcs.toFormGroup(this.questions);
    this.userform = this.createForm({profileData:{
      name: 'h',
      email: 'l',
      mobileNumber: '8'
    }, organisation: {name: 'oh'}})
  }

createForm(user: any) {
  this.userForm = this.fb.group({
    name: user.profileData.name,
    email: user.profileData.email,
    phone: user.profileData.mobileNumber,    
    orgForm: this.fb.group({
      name: [ user.organisation.name , [Validators.required]]
    })
  });
}

onSubmit() {
   this.payLoad = JSON.stringify(this.form.value);
  }
}
user_20630960
Related