指定加载哪种模型关系

Question

我是一个初级的Cake用户，但熟悉php和框架的工作原理（我曾经使用Code Igniter）。如何在下面调用模型并仅返回艺术家记录和相关艺术家图像记录，而不是相册记录。

class Artist extends AppModel { 

    var $name = 'Artist'; 
    var $hasMany = array('Album', 'ArtistImage'); 

} 

另外，你能澄清$ this-Artist-> recursive的值吗？

感谢您的帮助

Answer 1

我认为这个问题是你的艺术家模型。添加行为的正确方法是

<?php 
    Class Artist extends AppModel 
    { 
     public $name = "Artist"; 
     public $actsAs = array('Containable'); 
    } 
?> 

通知的actsAs变量是复数，你的模式有它作为$ ACTAS =阵列（..）与变量作为一个单数。

Answer 2

的中容纳的行为（book.cakephp.org/view/474/Containable）是你在找什么。

递归属性（book.cakephp.org/view/439/recursive）告诉CakePHP在获取记录时应该如何深入关系。

Answer 3

// Artist /app/models/artist.php 
    class Artist extends AppModel { 

     var $name  = 'Artist'; 
     var $hasMany = array('Album', 'ArtistImage'); 
     var $actAs  = array('Containable'); 
    } 


    // ArtistsController /app/controllers/artists_controller.php 
    class ArtistsController extends AppController { 

     var $name  = 'Artists'; 

     public function example() { 

      debug($this->Artist->find('all'); 

      debug($this->Artist->find('all', array(
       'recursive' => 0, 
      )); 

      debug($this->Artist->find('all', array(
       'contain' => array(
        'ArtistImage' => array(
         // artist find options here i.e. fields, conditions, order etc 
       ), 
       ); 
      )); 
     } 
    } 

    // results 
    // with just find('all') 
    Array 
    (
     [0] => Array 
      (
       [Artist] => Array 
        (
         [id] => 1, 
         [name] => Wumpscut 
        ), 
       [Album] => Array 
        (
         [0] => Array 
          (
           [id] => 1, 
           [artist_id] => 1, 
           [name] => Bunker Gate Seven 
          ), 
         [1] => Array 
          (
           [id] => 2, 
           [artist_id] => 1, 
           [name] => Born Again 
          ) 
        ), 
       [ArtistImage] => Array 
        (
         [0] => Array 
          (
           [id] => 1, 
           [artist_id] => 1, 
           [file] => Bunker-Gate-Seven-Cover.jpg 
          ), 
         [1] => Array 
          (
           [id] => 2, 
           [artist_id] => 1, 
           [file] => Born-Again-Cover.jpg 
          ) 
        ) 
      ), 
     [1] => Array 
      (
       [Artist] => Array 
        (
         [id] => 2, 
         [name] => Oneriod Psychosis 
        ), 
       [Album] => Array 
        (
         [0] => Array 
          (
           [id] => 3, 
           [artist_id] => 2, 
           [name] => Fantasies About Illness 
          ), 
        ), 
       [ArtistImage] => Array 
        (
         [0] => Array 
          (
           [id] => 3, 
           [artist_id] => 2, 
           [file] => Fantasies-About-Illness-Cover.jpg 
          ), 
        ) 
      ) 
    ) 


    // results 
    // with recursive 0 
    Array 
    (
     [0] => Array 
      (
       [Artist] => Array 
        (
         [id] => 1, 
         [name] => Wumpscut 
        ), 

      ), 
     [1] => Array 
      (
       [Artist] => Array 
        (
         [id] => 2, 
         [name] => Oneriod Psychosis 
        ) 
      ) 
    ) 


    // results 
    // with find('all', array('contain' => array('ArtistImage')) 

    Array 
    (
     [0] => Array 
      (
       [Artist] => Array 
        (
         [id] => 1, 
         [name] => Wumpscut 
        ), 
       [ArtistImage] => Array 
        (
         [0] => Array 
          (
           [id] => 1, 
           [artist_id] => 1, 
           [file] => Bunker-Gate-Seven-Cover.jpg 
          ), 
         [1] => Array 
          (
           [id] => 2, 
           [artist_id] => 1, 
           [file] => Born-Again-Cover.jpg 
          ) 
        ) 
      ), 
     [1] => Array 
      (
       [Artist] => Array 
        (
         [id] => 2, 
         [name] => Oneriod Psychosis 
        ), 
       [ArtistImage] => Array 
        (
         [0] => Array 
          (
           [id] => 3, 
           [artist_id] => 2, 
           [file] => Fantasies-About-Illness-Cover.jpg 
          ), 
        ) 
      ) 
    ) 

希望帮助解释它

Answer 4

您可以发布您的控制器和模型到引擎收录？当你完成后在这里发布这些链接。

在你进入引擎收录你正在使用...

if($images) { 
    echo("Loading Artist Images"); 
    $this->Artists->recursive = 1; 
    $this->Artists->contains('ArtistImage'); 
} else { ... 

这有几个原因无法正常工作。

首先 - 模型名称需要是单数。 I.E.艺术家=艺术家 其次 - 可包含行为没有“包含”功能，正确的功能名称也是单数。 I.E包含（'ArtistImage'）=包含（'ArtistImage'）

所以我FTFY，这里雅去。

if($images) { 
    echo("Loading Artist Images"); 
    $this->Artist->contain('ArtistImage'); 
} else { ... 

希望能够为您澄清事情。 http://book.cakephp.org/view/474/Containable http://book.cakephp.org/view/22/CakePHP-Conventions

此外，这取决于蛋糕的版本使用的是我相信调用一个不存在的模型功能（即模型 - >包含（...））将尝试和调用存储过程mysql如果模型文件没有该名称的功能。

Answer 5

该模型是专辑，所以它应该是$这个 - >专辑，而不是$这个 - >专辑

应用::进口（“模式”，“相册”）;

$ this-> Album-> contains（'Song'）; $ items = $ this-> Album-> findAllByArtistId（$ artist_id）;