CakePHP でフォーム検証を使用するにはどうすればよいですか?

$ bin/cake bake model User

// src/Model/Entity/User.php namespace AppModelEntity; use CakeORMEntity; class User extends Entity { protected $_accessible = [ '*' => true, 'id' => false, ]; protected function _setPassword($password) { return (new DefaultPasswordHasher)->hash($password); } protected function _getFullName() { return $this->_properties['first_name'] . ' ' . $this->_properties['last_name']; } protected function _getAge() { $now = new DateTime(); $birthDate = new DateTime($this->_properties['birth_date']); return $now->diff($birthDate)->y; } protected function _setAge($age) { $this->_properties['birth_date'] = (new DateTime("-$age years"))->format('Y-m-d'); return $age; } protected function _validationDefault(Validator $validator) { $validator ->notEmpty('username', 'A username is required') ->notEmpty('password', 'A password is required') ->add('password', [ 'length' => [ 'rule' => ['minLength', 8], 'message' => 'Password must be at least 8 characters long', ] ]) ->notEmpty('first_name', 'A first name is required') ->notEmpty('last_name', 'A last name is required') ->add('email', 'valid-email', [ 'rule' => 'email', 'message' => 'Please enter a valid email address' ]); return $validator; } }

// src/Template/Users/add.ctp Form->create($user) ?> Form->input('username') ?> Form->input('password') ?> Form->input('first_name') ?> Form->input('last_name') ?> Form->input('email') ?> Form->button(__('Submit')) ?> Form->end() ?>

// src/Controller/UsersController.php namespace AppController; use CakeORMTableRegistry; class UsersController extends AppController { public function add() { $user = $this->Users->newEntity(); if ($this->request->is('post')) { $user = $this->Users->patchEntity($user, $this->request->getData()); if ($this->Users->save($user)) { $this->Flash->success(__('The user has been saved.')); return $this->redirect(['action' => 'index']); } $this->Flash->error(__('Unable to add the user.')); } $this->set('user', $user); } }