Angular 7 Reactive forms - link form group in FormArray to object

Question

I'm creating a formarray of formgroups

const skillsControl = <FormArray>this.form.controls['skills'];

this.selectedCourse.requiredSkills.forEach(skill => {
    const s = this.fb.group({
                instructor: ['', Validators.required],
                ...other controls...
              });
    skillsControl.push(s);
}

Each selectedCourse will have a unique set of skills.

I need to be able to display the name of the skill, and then the form controls associated to that skill.

How do i associate the required skill object with its respective form group?

Eugenia Pais · Accepted Answer · 2019-01-28 17:33:17Z

1

You have to define your form in this way:

  const items = new FormArray(this.skills.map(item => new FormGroup({
                name: new FormControl(item.name),
                instructor: new FormControl(item.instructor)
  })));

  this.myForm = new FormGroup({items: items});

I did a full example in stackblitz:

Form Array exmple

I hope it helps!

answered Jan 28, 2019 at 17:33

Eugenia Pais

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1 Comment

markusrambarkus Over a year ago

Not exactly what i was after, but it's helped me get to where i want to be. Thanks for this.

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