How to create a custom validation rule in cake 3

Question

I am working on Cake 3. I want to create a custom validation-rule. I want to check if the field 'password' is equal to the 'confirm_password' field.

This is my code:

 public function validationDefault(Validator $validator) {
        $validator
                ->add('id', 'valid', ['rule' => 'numeric'])
                ->allowEmpty('id', 'create')
                ->add('email', 'valid', ['rule' => 'email'])
                ->requirePresence('email', 'create')
                ->notEmpty('email')
                ->add('email', 'unique', ['rule' => 'validateUnique', 'provider' => 'table'])
                ->requirePresence('password', 'create')
                ->notEmpty('password')
                ->notEmpty('confirm_password')
                ->add('confirm_password', 'custom', [
                    'rule' => function($value, $context) {
                        if ($value !== $context['data']['password']) {
                            return false;
                        }
                        return false;
                    },
                    'message' => 'The passwords are not equal',
        ]);

        return $validator;
    }

When I try to 'fail' the form-submit, the code saves, and I get no error.

I read http://book.cakephp.org/3.0/en/core-libraries/validation.html#custom-validation-rules but didn't help.... Anybody?

Thanks!

Answer 1

Another built in way to compare two passwords with CakePHP 3 validation could be:

->add('confirm_password',
    'compareWith', [
        'rule' => ['compareWith', 'password'],
        'message' => 'Passwords not equal.'
    ]
)

You can also add this to your validationDefault method in your Table definition.