Challenges with compiling TypeScript in Angular2 Form components

In Angular2, I have created a form with the following structure:

    this.form = this._formBuilder.group({
        password: ['',Validators.required],
        passwordRepeat: ['',Validators.required]
    });

The form is defined as:

public form:ControlGroup

This setup works because:

 _formBuilder = FormBuilder.group(controlsConfig: {
        [key: string]: any;
    }, extra?: {
        [key: string]: any;
    }): modelModule.ControlGroup

it returns ControlGroup.

However, when trying to access the password value in my component like this:

this.user.password = this.passwordEditForm.controls.password.value;

I get a compilation error saying:

error TS2339: Property 'password' does not exist on type '{ [key: string]: AbstractControl; }'.

This issue seems like a bug. Any suggestions on how to resolve it? I attempted the following approach:

export interface FormControlGroup extends ControlGroup{
password:any;
}

But this led to more errors:

error TS1206: Decorators are not valid here.
app/form.component.ts(30,9): error TS2322: Type 'ControlGroup' is not assignable to type 'FormControlGroup'.
  Property 'password' is missing in type 'ControlGroup'.
app/form.component.ts(37,61): error TS2339: Property 'password' does not exist on type '{ [key: string]: AbstractControl; }'.

Answer №1

Substitute the following code:

this.user.password = this.passwordEditForm.controls.password.value;

with

this.user.password = this.passwordEditForm.controls['password'].value;

This solution worked for me. I believe it's just a temporary fix.

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