Troubles with Angular Form Elements: Bridging the Gap Between AbstractControl and FormControl

Encountering an error when trying to use a form with controls.

 Type 'AbstractControl' is missing the following properties from type 
'FormControl': registerOnChange, registerOnDisabledChange, _applyFormState

Check out Form Code

  this.checkoutForm = this.fb.group({
      firstName: ['', [Validators.required, Validators.pattern('[a-zA-Z][a-zA-Z ]+[a-zA-Z]$')]],
      lastName: ['', [Validators.required, Validators.pattern('[a-zA-Z][a-zA-Z ]+[a-zA-Z]$')]],
      phoneNumber: ['', [Validators.required, Validators.pattern('[0-9]+')]],
      address: ['', [Validators.required, Validators.maxLength(100)]],
      pinCode: ['', Validators.required]
    });

HTML

<input type="text" 
name="firstName"
[formControl]="checkoutForm.controls['firstName']" 
value="" 
placeholder="" 
autocomplete="off"      
>

Answer №1

When working with reactive forms, it is important to utilize the form itself rather than just focusing on individual controls.

If you only interact with the controls independently, then the purpose of having a form becomes obsolete.

<form [formGroup]="checkoutForm">
  <input type="text" formControlName="firstName">
</form>

Answer №2

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