如何刪除CakePHP框架的編輯帖子中的所有標籤？

Question

我在cakephp框架上構建了CMS。我只能刪除一個或多個標籤，而不是全部標籤，因此如何從帖子中刪除所有標籤。 我有以下文件。

郵政型號：

<?php 
public $displayField = 'title'; 

public $hasAndBelongsToMany = array(
    'Tag' => array(
     'className' => 'Tag', 
     'joinTable' => 'posts_tags', 
     'foreignKey' => 'post_id', 
     'associationForeignKey' => 'tag_id', 
     'unique' => 'keepExisting', 
     'conditions' => '', 
     'fields' => '', 
     'order' => '', 
     'limit' => '', 
     'offset' => '', 
     'finderQuery' => '', 
     'deleteQuery' => '', 
     'insertQuery' => '', 
    ) 
); 

>

標籤型號：？？

<?php 
public $displayField = 'name'; 

/** 
* hasAndBelongsToMany associations 
* 
* @var array 
*/ 
public $hasAndBelongsToMany = array(
    'Post' => array(
     'className' => 'Post', 
     'joinTable' => 'posts_tags', 
     'foreignKey' => 'tag_id', 
     'associationForeignKey' => 'post_id', 
     'unique' => 'keepExisting', 
     'conditions' => '', 
     'fields' => '', 
     'order' => '', 
     'limit' => '', 
     'offset' => '', 
     'finderQuery' => '', 
     'deleteQuery' => '', 
     'insertQuery' => '' 
    ) 
); 

>

柱控制器：

<?php 
public function admin_edit($id = null) { 
    $this->Post->id = $id; 
    if (!$this->Post->exists()) { 
     throw new NotFoundException(__('Invalid post')); 
    } 
    if ($this->request->is('post') || $this->request->is('put')) { 

     $tags = explode(',', $this->request->data['Post']['tags']); 
     foreach ($tags as $_tag) { 
      $_tag = strtolower(trim($_tag)); 
      if ($_tag) { 
       $this->Post->Tag->recursive = -1; 
       $tag = $this->Post->Tag->findByName($_tag); 
       if (!$tag) { 
        $this->Post->Tag->create(); 
        $tag = $this->Post->Tag->save(array('name' => $_tag, 'slug' => $_tag)); 
        $tag['Tag']['id'] = $this->Post->Tag->id; 
        if (!$tag) { 
         $this->_flash(__(sprintf('The Tag %s could not be saved.', $_tag), true), 'success'); 
        } 
       } 
       if ($tag) { 
        $this->request->data['Tag']['Tag'][$tag['Tag']['id']] = $tag['Tag']['id']; 
       } 
      } 
     } 

     if ($this->Post->save($this->request->data)) { 

      $this->Session->setFlash(__('The post has been saved')); 
      $this->redirect(array('action' => 'index')); 
     } else { 
      $this->Session->setFlash(__('The post could not be saved. Please, try again.')); 
     } 
    } else { 
     if (empty($this->request->data)) { 
      $this->request->data = $this->Post->read(null, $id); 
      $tags = array(); 
      if (isset($this->request->data['Tag']) && !empty($this->request->data['Tag'])) { 
       foreach ($this->request->data['Tag'] as $tag) { 
        $tags[] = $tag['name']; 
       } 
       $this->request->data['Post']['tags'] = implode(', ', $tags); 
      } 
     } 
    } 
} 

？

>

admin_edit.ctp：

echo $this->Form->create('Post'); 
    echo __('Admin Edit Post'); 
    echo $this->Form->input('id'); 
    echo $this->Form->input('user_id'); 
    echo $this->Form->input('title'); 
    echo $this->Form->input('slug'); 
    echo $this->Form->input('content'); 
    echo $this->Form->input('excerpt'); 
    echo $this->Form->input('status'); 
    echo $this->Form->input('comment_status'); 
    echo $this->Form->input('comment_count'); 
    echo $this->Form->input('type'); 
    echo $this->Form->input('Category'); 
    echo $this->Form->input('Post.tags'); 
     echo $this->Form->end(__('Submit')); 

謝謝你的幫助。

Answer 1

這可以幫助你：http://book.cakephp.org/2.0/en/models/deleting-data.html

的deleteAll功能，你可以通過帖子ID，並刪除所有有關它的標籤。

$conditions = array('Tag.id' => 1234); 
$this->Post->Tag->deleteAll($conditions, false);