Error shown in console when using Angular 7 FormControlName

Question

Error shown in console when using Angular 7 FormControlName

My webpage has a reactive form, but I keep encountering an error message that states:

ERROR Error: formControlName must be used with a parent formGroup directive. Make sure to include a formGroup directive and pass it an existing FormGroup instance (you can create one in your class).

I am puzzled by this error because I have already defined a formGroup instance.

This is the HTML code I am using:

<form [formGroup]="singleRecipientForm">
    <textarea #textInput placeholder="user e-mail" formControlName="email"></textarea>
    <button type="submit" (click)="sendMailTextInput(textInput.value)">Send invite </button>
</form

And here is how my Typescript file looks:

singleRecipientForm: FormGroup;

constructor(private formBuilder: FormBuilder) {}

ngOnInit() {
    this.singleRecipientForm = this.formBuilder.group({
      email: ['', [Validators.required]],
    });
}

I cannot figure out why I keep getting this error message.

angular forms typescript

Answer 1

Answer №1

The error lies in not properly closing the form tag.

 <form [formGroup]="singleRecipientForm">
        <textarea #textInput placeholder="user e-mail" formControlName="email"></textarea>
        <button type="submit" (click)="sendMailTextInput(textInput.value)">Send invite </button>
    </form>

If this is not the issue, make sure you have imported the ReactiveFormsModule in your module.ts file.

Answer 2

The error lies in not properly closing the form tag.

 <form [formGroup]="singleRecipientForm">
        <textarea #textInput placeholder="user e-mail" formControlName="email"></textarea>
        <button type="submit" (click)="sendMailTextInput(textInput.value)">Send invite </button>
    </form>

If this is not the issue, make sure you have imported the ReactiveFormsModule in your module.ts file.

Answer 3

Answer №2

When working with Reactive forms, you don't need to use template references to retrieve input values, even though a tag is missing.

singleRecipientForm: FormGroup;

constructor(private formBuilder: FormBuilder) {}

ngOnInit() {
this._buildForm();

}
private _buildForm(): void {
        this.singleRecipientForm = this.formBuilder.group({
      email: New FromControl('', Validators.required)
    });
}
public sendMailTextInput(): any {
console.log(this.singleRecipientForm.value)
}

Your HTML would include (click)="sendMailTextInput()", allowing you to handle the text input as needed. Reactive Forms offer various methods like valueChanges() that can simplify your development process.

Answer 4

When working with Reactive forms, you don't need to use template references to retrieve input values, even though a tag is missing.

singleRecipientForm: FormGroup;

constructor(private formBuilder: FormBuilder) {}

ngOnInit() {
this._buildForm();

}
private _buildForm(): void {
        this.singleRecipientForm = this.formBuilder.group({
      email: New FromControl('', Validators.required)
    });
}
public sendMailTextInput(): any {
console.log(this.singleRecipientForm.value)
}

Your HTML would include (click)="sendMailTextInput()", allowing you to handle the text input as needed. Reactive Forms offer various methods like valueChanges() that can simplify your development process.

Error shown in console when using Angular 7 FormControlName

Answer №1

Answer №2

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