What is the best way to obtain the value of a nested formBuilder group?

Question

What is the best way to obtain the value of a nested formBuilder group?

Currently, my nested form is structured like this:

this.form = this.formBuilder.group({
      user:  this.formBuilder.group({
        id: ['', Validators.required],
        name: ['', Validators.required],
        phone: ['', Validators.required]
      })
})

Usually, I retrieve values like this:

let userID = this.Form.controls['id'].value;
let userName = this.Form.controls['name'].value;
let userPhone = this.Form.controls['phone'].value;

Since the formGroups are nested, I'm unsure how to access the nested values. I attempted:

let userName = this.Form.controls['user'].name;

Can someone provide the correct syntax for accessing a form control value in a nested formGroup? Thank you.

forms angular typescript

Answer 1

Answer №1

After trying different approaches, I successfully retrieved the value using the methods below:

const userName = this.Form.controls['user'].value.name;

or

const userName = this.Form.get(['user','name']).value;

Both of these techniques proved to be effective.

Answer 2

After trying different approaches, I successfully retrieved the value using the methods below:

const userName = this.Form.controls['user'].value.name;

or

const userName = this.Form.get(['user','name']).value;

Both of these techniques proved to be effective.

Answer 3

Answer №2

By using Angular 4 or newer versions, you have the ability to retrieve values from nested forms in a concise manner. For example:

const username = this.form.get('user.name').value

You can continue chaining this method throughout the levels of your nested form structure. Here is an example:

this.form = this.formBuilder.group({
      parent:  this.formBuilder.group({
               child: this.formBuilder.group({
                      grandChild: this.formBuilder.group({
                                  grandGrandChild: ['',Validators.required],
                            }), 
                      }), 
               }),
})

After setting up your nested form in this way, you can access specific values like this:

this.form.get('parent.child.gradChild.grandGrandChild').value

Answer 4

By using Angular 4 or newer versions, you have the ability to retrieve values from nested forms in a concise manner. For example:

const username = this.form.get('user.name').value

You can continue chaining this method throughout the levels of your nested form structure. Here is an example:

this.form = this.formBuilder.group({
      parent:  this.formBuilder.group({
               child: this.formBuilder.group({
                      grandChild: this.formBuilder.group({
                                  grandGrandChild: ['',Validators.required],
                            }), 
                      }), 
               }),
})

After setting up your nested form in this way, you can access specific values like this:

this.form.get('parent.child.gradChild.grandGrandChild').value

Answer 5

Answer №3

Attempting this in Angular 6+ has been unsuccessful

this.form.get(['person', 'name']);

However, you can try

this.form.get('name').value;

I am unsure why the initial method does not work for me, as per the documentation which states that the get method requires an array of ..

get(path: Array<string | number> | string): AbstractControl | null

Please accept my apologies for the confusion, you might find success with a nested control value retrieval like:

this.layerSettingsForm.get('name.styleName').value;

Answer 6

Attempting this in Angular 6+ has been unsuccessful

this.form.get(['person', 'name']);

However, you can try

this.form.get('name').value;

I am unsure why the initial method does not work for me, as per the documentation which states that the get method requires an array of ..

get(path: Array<string | number> | string): AbstractControl | null

Please accept my apologies for the confusion, you might find success with a nested control value retrieval like:

this.layerSettingsForm.get('name.styleName').value;

Answer 7

Answer №4

Give this a shot:

const userId = this.form.value.id

Answer 8

Give this a shot:

const userId = this.form.value.id

Answer 9

Answer №5

Stumbled upon an alternative solution for an older post.

const userName = (this.Form.controls['user'] as FormGroup).controls['name'].value;

In case user is undefined or null, the value of userName will also be null and prevent any crashes.

Answer 10

Stumbled upon an alternative solution for an older post.

const userName = (this.Form.controls['user'] as FormGroup).controls['name'].value;

In case user is undefined or null, the value of userName will also be null and prevent any crashes.

Answer 11

Answer №6

I found success with this method

form.controls['workWeek'].value.dayGroup.fridayAM

Answer 12

I found success with this method

form.controls['workWeek'].value.dayGroup.fridayAM

Answer 13

Answer №7

When working with Angular 8, within the HTML template:

form.get('user').get('id')

Answer 14

When working with Angular 8, within the HTML template:

form.get('user').get('id')

Answer 15

Answer №8

give this a try

let formData = this.form.controls.customer.controls;
let customerId = formData.id.value;
let customerName = formData.name.value;
let customerPhone = formData.phone.value;

this method can be applied to any nested form structures

Answer 16

give this a try

let formData = this.form.controls.customer.controls;
let customerId = formData.id.value;
let customerName = formData.name.value;
let customerPhone = formData.phone.value;

this method can be applied to any nested form structures

What is the best way to obtain the value of a nested formBuilder group?

Answer №1

Answer №2

Answer №3

Answer №4

Answer №5

Answer №6

Answer №7

Answer №8

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