Validation doesn't work - CakePHP 3 - cakephp

Question

I am trying to add validation on change password function but it doesn't work.
I have added
->add('repeat_password', [
'equalToPassword' => [
'rule' => function ($value, $context) {
return $value === $context['data']['new_password'];
},
'message' => __("Your password confirm must match with your password.")
]
]);
to Users model
and in my controller
$user = $this->Users->get($this->_User['user_id']);
if ($this->request->is(['patch', 'post', 'put'])) {
$user = $this->Users->createEntity($user, ['password' => $this->request->data['repeat_password']]);
// $verify = (new DefaultPasswordHasher)->check($this->request->data['old_password'], $user->password);
// debug($verify);
//if ($verify) {
if ($this->Users->save($user)) {
$this->Flash->success('The password has been changed');
$this->redirect(['action' => 'index']);
} else {
$this->Flash->error('Password could not be issued');
}
}
// else {
// $this->Flash->error('Password Do not match');
// }
// }
}
It saves data without validating. What is the solution ?

Answer 1

Without having checked your code thoroughly, my first thought is that CakePHP 3 already provides the built-in validator compareWith for this purpose.
Try setting the validation rules as follows:
$validator->add('repeat_password', [
'compareWith' => [
'rule' => ['compareWith', 'new_password'],
'message' => __("Your password confirm must match with your password.")
]
]);
Also, check that both new_password and repeat_password are set to true in the $_accessible array.

Answer 2

public $validate = array(
'password' => array(
'required' => array(
'rule' => array('notEmpty'),
'message' => 'A password is required'
),
'min_length' => array(
'rule' => array('minLength', '6'),
'message' => 'Password must have a mimimum of 6 characters'
)
),
'password_confirm' => array(
'required' => array(
'rule' => array('notEmpty'),
'message' => 'Please confirm your password'
),
'equaltofield' => array(
'rule' => array('equaltofield','password'),
'message' => 'Both passwords must match.'
)
),
)
please write code in your model more detail please check below link
http://miftyisbored.com/a-complete-login-and-authentication-application-tutorial-for-cakephp-2-3/