Creating nested Angular form groups is essential for organizing form fields in a hierarchical structure that reflects

Imagine having the following structure for a formGroup:

userGroup = {
   name,
   surname,
   address: {
      firstLine,
      secondLine
   }
}

This leads to creating HTML code similar to this:

<form [formGroup]="userGroup">
   <input formControlName="name">
   <input formControlName="surname">

   <div formGroupName="address">
      <input formControlName="firstLine">
      <input formControlName="secondLine">
   </div>
</form>

Now, let's assume you are required to structure your HTML like so:

<form [formGroup]="userGroup">
   <input formControlName="name">
   <input formControlName="surname">

   <div formGroupName="address">
      <input formControlName="firstLine">
   </div>

   <hr>
   <div formGroupName="someOtherGroup">
       <input id="problemSecondLine" formControlName="???.secondLine">
  </div>
</form>

Is there a way to ensure that the field with id=problemSecondLine corresponds to

userGroup -> address -> secondLine
, even though visually it is placed differently in the DOM?

You might consider manually updating through ngModel, but seeking a cleaner solution.

Answer №1

Instead of using the formControlName directive, try using the formControl directive.

<input id="secondLineInput" [formControl]="userGroup.get('address.secondLine')">

Example Link

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