我遇到了 afterfind() 的问题，而我正在阅读的内容都没有解决它。这与事后发现不适用于相关模型有关，我知道很多人提出了但我还没有找到解决方案。我看到的所有帖子也是2009-2010年的。
User.php 模型
function afterFind($results, $primary = false) {
parent::afterFind($results, $primary);
if($primary){
foreach($results as $key => $val){
if (isset($val['User']['id'])){
$results[$key]['User']['online'] = $this->UsersOnline->find('count',
array('conditions' => array('UsersOnline.user_id =' => $val['User']['id'])));
// THIS WORKS PERFECTLY FOR USER MODEL PAGES
}
}
}
else {
foreach($results as $key => $val){
$key['User']['online'] = $this->UsersOnline->find('count',
array('conditions' => array('UsersOnline.user_id =' => 1)));
// THIS IS THE PART THAT IS INCORRECT, AND THIS IS THE "BEST" SOLUTION
// I'VE FOUND ONLINE BUT IT IS NOT WORKING
/**
* I've also tried these
*
* $results[$key]['online']
* $results[$val]['online']
* $results[$key][$val]['online']
* $results['0']['User']['online']
*
* and about 5 other things
*/
}
}
return $results;
} // end afterfind
我在“else”语句中尝试了许多代码组合，但我得到了三个错误之一，即Uninitialized string offset: 0,Cannot use string offset as an array或Column User.online not found.
编辑：也许这会为这个问题提供更多的洞察力。
我正在尝试查看文章 VIEW.CTP。它将带有信息的文章显示在顶部$article['User']（试图包含$article['User']['online']）。帖子下方是文章评论（foreach $article['Comment'] as $comment）。
这是我的 ARTICLES.PHP 控制器
public function view($page = null, $id = null) {
// $this->Article->recursive = 3;
$this->Article->id = $id;
if (!$this->Article->exists()) {
$this->Session->setFlash('This article does not exist');
$this->redirect(array('controller'=>'articles', 'action' => 'index'), null, true);
}
$this->Article->contain(array(
'User' => array(
'fields'=>array('User.username', 'User.signature', 'User.online'),
'UserAvatar' => array(
'fields'=>array('UserAvatar.file')
)
),
'Comment' => array(
'fields'=>array('Comment.content', 'Comment.created', 'Comment.title'),
'User' => array(
'fields'=>array('User.username', 'User.signature', 'User.online'),
'UserAvatar' => array(
'fields'=>array('UserAvatar.file')
)
)
)
));
$this->set('article', $this->Article->read(null, $id));
} // end view function
使用代码原样（查看“包含”条件，我收到一条错误消息“ Column User.online does not exist”。但是，当我从 Comment 数组和 User 数组和 INSTEAD set 的包含中删除 User.online 时$this->Article->recursive = 3，我没有收到错误消息。使用 recursive = 3，如果我print_r($article['User'])或print_r($comment['User'])在文章 view.ctp 上，数组都显示正确的在线值。
$article['User'] 和 $comment['User'] with recursive = 3 的精确打印是
Array
(
[id] => this
[username] => this
[password] => ****
[UserAvatar] => Array
(
[id] => this
[column] => value
[column] => value
)
[OTHER USER RELATED MODELS] => Array
(
[column] => value
)
[online] => 1
[type] => 1
)
如果我echo $article['User']['online']使用 recursive = 3，我会得到正确的值（需要 3 才能显示 UserAvatar 信息）。
我不明白为什么，然后，包含，它说 User.online 找不到？我actAs = 'Containable'在我的 AppModel 中有，因为我在几乎所有模型上都使用了该属性。
这是我最新的 USER.PHP 模型 afterfind()
function afterFind($results, $primary = false) {
parent::afterFind($results, $primary);
if($primary){
foreach($results as $key => $val){
if (isset($val['User']['id'])){
$results[$key]['User']['online'] = $this->UsersOnline->find('count', array('conditions' => array('UsersOnline.user_id =' => $val['User']['id'])));
}
} // end for each
} // end if primary
else{
foreach($results as $key => $val){
if(isset($results['0']['User']['id'])){
$results['0']['User']['online'] = "1";
$results['User']['online'] = $results['0']['User']['online'];
$results['0']['User']['type'] = '1';
}
elseif(isset($results['User']['id'])){
$results['User']['online'] = "1";
$results[$key]['User']['online'] = $results['User']['online'];
$results['User']['type'] = '2';
} // end elseif
// everything returns as type 1 so this may be irrelevant
} // end for each
} // end if not primary
return $results;
} // end afterfind
可能的解决方案：经过更多修改后，我发现以下工作（文章模型）但这并不理想，因为它从 User 和 UserAvatar 检索所有数据，而我只想获取指定字段的数据。但是，当我使用 fields 选项时，无法识别 User.online。有任何想法吗？
$this->Article->contain(array(
'User' => array(
'UserAvatar'
),
'Comment' => array(
'User' => array(
'UserAvatar'
)
)
));
$this->set('article', $this->Article->read(null, $id));