CakePHP 3 - beforeSave 回调在编辑时不起作用

Question

我有一个 beforeSave 回调，每当我创建新实体时都会调用它。然而，当我编辑时，它根本没有被调用。在文档中找不到任何有用的内容。

这是我的编辑功能:

public function edit($id = null) {
    if (!$id) {
        throw new NotFoundException(__('Invalid article'));
    }

    $article = $this->Articles->get($id);
    if ($this->request->is(['post', 'put'])) {
        $this->Articles->patchEntity($article, $this->request->data);
        if ($this->Articles->save($article)) {
            $this->Flash->success(__('Your article has been updated.'));
            return $this->redirect(['action' => 'index']);
        }
        $this->Flash->error(__('Unable to update your article.'));
    }

    $this->set('article', $article);
} 

Answer 1

只有当您发布/编辑的数据被修改时，才会触发beforeSave函数。

//triggers only if an entity has been modified
public function beforeSave(Event $event, Entity $entity)
{
    if($entity->isNew()) {       
        //on create
    } else {
        //on update
    }
}