我有一个beforeSave
-callback,每当我创建一个新实体时都会调用它。但是当我编辑时,它根本就没有被调用。在文档中找不到任何可能有用的内容。
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);
}
仅当您发布/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
}
}
是的,你需要使用Event
和Entity
对象:
检查这个例子:
// src/Model/Table/ArticlesTable.php
use Cake\Event\Event;
use Cake\ORM\Entity;
public function beforeSave(Event $event, Entity $entity) {
if ($entity->isNew()) {
return true;
}
// edit code
}
编写相同代码的另一种方法:
public function beforeSave(\Cake\Event\Event $event, \Cake\ORM\Entity $entity, \ArrayObject $options){
if($entity->isNew()) {
// on create
} else {
// on update
}
}