Error message stating: "Form control with the name does not have a value accessor in Angular's reactive forms."

I have a specific input setup in the following way:

    <form [formGroup]="loginForm"">
      <ion-input [formControlName]="'email'"></ion-input>

In my component, I've defined the form as:

this.loginForm = this.formBuilder.group({
  email: ['', Validators.compose([Validators.required, Validators.email])],
  password: ['', Validators.required]
});

However, when running the application, Angular is throwing an error:

ERROR Error: No value accessor for form control with name: 'email'

I have confirmed that ReactiveFormsModule and FormsModule are both imported into my modules.

Any other suggestions on what may be causing this issue?

angulartypescriptangular-reactive-forms

Answer №1

Ensure that you have properly imported the module where <ion-input> was declared

Explanation in Depth

In Angular 9+, setting fullTemplateTypeCheck to false means Angular will not generate any error messages related to this issue. Reference this statement on GitHub for more details: Ivy is not complaining about unknown element inside ng-template #36171

This change is a result of Ivy's architecture. In the previous compiler (ViewEngine), detection of unknown elements occurred during template parsing. With Ivy, templates are parsed independently from their corresponding NgModule, leading to a lack of information on components/directives in scope. Validation of elements now takes place during template type checking, influenced by the type checker's configuration. Setting fullTemplateTypeCheck to true allows thorough checking within templates (false avoids this for compatibility)

The Engine specifically highlights issues with valueAccessor rather than unknown elements

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