我使用了本教程:http://book.cakephp.org/2.0/en/tutorials-and-examples/blog-auth-example/auth.html
要构建我的第一个表单/创建用户应用程序,但它失败并显示错误消息:
Fatal error: Call to a member function allow() on a non-object in /home/public_html/cake/app/Controller/UsersController.php on line 18
这是18行:
$this->Auth->allow('add', 'logout');
以上行是函数的成员:
public function beforeFilter() {
parent::beforeFilter();
$this->Auth->allow('add', 'logout');
}
我的整个UsersController.php
:
<?php
class UsersController extends AppController {
public function login() {
if ($this->Auth->login()) {
$this->redirect($this->Auth->redirect());
} else {
$this->Session->setFlash(__('Invalid username or password, try again'));
}
}
public function logout() {
$this->redirect($this->Auth->logout());
}
public function beforeFilter() {
parent::beforeFilter();
$this->Auth->allow('add', 'logout');
}
public function index() {
$this->User->recursive = 0;
$this->set('users', $this->paginate());
}
public function view($id = null) {
$this->User->id = $id;
if (!$this->User->exists()) {
throw new NotFoundException(__('Invalid user'));
}
$this->set('user', $this->User->read(null, $id));
}
public function add() {
if ($this->request->is('post')) {
$this->User->create();
if ($this->User->save($this->request->data)) {
$this->Session->setFlash(__('The user has been saved'));
$this->redirect(array('action' => 'index'));
} else {
$this->Session->setFlash(__('The user could not be saved. Please, try again.'));
}
}
}
public function edit($id = null) {
$this->User->id = $id;
if (!$this->User->exists()) {
throw new NotFoundException(__('Invalid user'));
}
if ($this->request->is('post') || $this->request->is('put')) {
if ($this->User->save($this->request->data)) {
$this->Session->setFlash(__('The user has been saved'));
$this->redirect(array('action' => 'index'));
} else {
$this->Session->setFlash(__('The user could not be saved. Please, try again.'));
}
} else {
$this->request->data = $this->User->read(null, $id);
unset($this->request->data['User']['password']);
}
}
public function delete($id = null) {
if (!$this->request->is('post')) {
throw new MethodNotAllowedException();
}
$this->User->id = $id;
if (!$this->User->exists()) {
throw new NotFoundException(__('Invalid user'));
}
if ($this->User->delete()) {
$this->Session->setFlash(__('User deleted'));
$this->redirect(array('action'=>'index'));
}
$this->Session->setFlash(__('User was not deleted'));
$this->redirect(array('action' => 'index'));
}
}
?>
为什么会这样?
答案 0 :(得分:13)
确保在AppController中实际调用了Auth功能。如果您在Controllers目录中没有AppController创建AppController.php
,则使用以下代码:
<?php
class AppController extends Controller {
}
?>
在AppController中的公共变量中调用Auth组件,因此控制器将如下所示:
<?php
class AppController extends Controller {
public $components = array('Auth');
}
?>
现在可以在整个应用程序中使用Auth。您也可以在UsersController中调用AuthComponent
,但这将使其仅对该特定控制器可用。您可能希望在整个应用程序中使用身份验证。