Issue with form validation

Here is my code -

This gives me "Undefined property: App\Controllers\Home::$validation" error.

Code:

   public function login()
{

       if (! $this->validate([
           'email' => 'required',
           'password'  => 'required'
       ])) {
           echo Services::plates('login', [
               'validation' => $this->validation
           ]);
       } else {
           //'title' => $this->request->getVar('title'),
       }

}

However, I can fix this error using this b

Code:

$validation =  \Config\Services::validation();

but I think as per documentation I should be able to pass validation object as above.

Another issue is in the view

Code:

   <?= $validation->listErrors() ?>

It just shows me error messages for the given rules above without even submitting the form along with the name of the validation view file name.

Code:

1 ROOTPATH/system/Validation/Views/list.php

   The email field is required.
   The password field is required.

What am I doing wrong?

Validation works fine for me:

Some Controller:

PHP Code:

$validation = $this->validate(Array rules, Array messages);
if ( ! $validation) {
    return redirect('/register')->withInput();
} 


withInput method from CodeIgniter Core:

PHP Code:

public function withInput()
{
    $session = $this->ensureSession();

    $input = [
        'get'     => $_GET ?? [],
        'post'     => $_POST ?? [],
    ];

    $session->setFlashdata('_ci_old_input', $input);

    // If the validator has any errors, transmit those back
    // so they can be displayed when the validation is
    // handled within a method different than displaying the form.
    $validator = Services::validation();
    if (! empty($validator->getErrors()))
    {
        $session->setFlashdata('_ci_validation_errors', serialize($validator->getErrors()));
    }

    return $this;
} 


Register View:

PHP Code:

<?php echo service('validation')->listErrors() ?>

If you want access to validator from some controller you can do it: