The error message 'LoginComponent' does not contain a property called 'form'

Struggling with adding a form to my Angular website, the error indicated by VScode is in the title.

Below is the code snippet from LoginComponent.html where the error occurs at both instances of the word "form".

    <div>
        <label for="email">Email: </label>                          
        <input type="email" formControlName="email">
    </div>
   
    <div *ngIf="Mail?.errors  && Mail?.touched">    
        <p *ngIf="Mail?.hasError('required')" class="error">
            Email is required.
        </p>
        <p *ngIf="Mail?.hasError('email')" class="error">
            Email format must be valid.
          </p>
    </div>

    <br/>
    <div>
        <label for="exampleInputPassword1" class="form-label">Password: </label>
        <input type="password" formControlName="password" [class.border-danger]="MailValid">
    </div>
    
    <div *ngIf="Password?.errors  && Password?.touched">
    <p *ngIf="Password?.hasError('required')" class="error">
      Password is required.
    </p>
    <p *ngIf="Password?.errors?.minlength
" class="error">
      Password must be 8 characters or more.
    </p>
  </div>
    <br/>
    <div>
        <button   type="submit">Sign In</button>
    </div>
</form>

<div>
 <p>Debugger to demonstrate direct binding to the form <strong>{{form.value.email}} </strong><strong>{{form.value.password}} </strong><p> <-- encountered error here as well.
<br> 

</div>

The error message "Property 'form' does not exist on type 'LoginComponent'" appears in every occurrence of the word "form" in my LoginComponent.ts code below.

import { Component, OnInit } from '@angular/core';
import {FormBuilder, FormGroup, Validators } from '@angular/forms';

@Component({
  selector: 'app-login',
  templateUrl: './login.component.html',
  styleUrls: ['./login.component.css']
})
export class LoginComponent implements OnInit {
  // Inject formBuilder in constructor
  constructor(private formBuilder: FormBuilder){ 
    /// Create control group for login form
    this.form= this.formBuilder.group({
      password:['',[Validators.required, Validators.minLength(8)]],
      email:['', [Validators.required, Validators.email]],
   })
  }

  ngOnInit(): void {
  }
  get Password(){
    return this.form.get("password");
  }
 
  get Mail(){
   return this.form.get("email");
  }

  get PasswordValid(){
    return this.Password?.touched && !this.Password?.valid;
  }

  get MailValid() {
    return false
  }
 

  onEnviar(event: Event){
    // Prevent default submit behavior
    event.preventDefault; 
 
    if (this.form.valid){
      // Call service to send data to server
      alert("All good! Submit form!")
    }else{
      // Mark all fields as touched to display error messages
      this.form.markAllAsTouched(); 
    }
 
  }

}

Answer №1

It appears that something crucial is missing in your code.

  1. Ensure you have properly referenced the form in the HTML, like so:

    <form [formGroup]="form">

  2. Make sure you have included the ReactiveFormsModule in your app.module.ts

Upon reviewing your code, I noticed that the declaration of form is unclear. Have you checked for any coding errors using a linter? It's possible that the template cannot locate the form due to this issue.

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