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POShow a list of records to have a join to another table using CakePHP
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  1. POShow a list of records to have a join to another table using CakePHP
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    copied!<p>I have an application that stores Posts and Topics and joins them using a Topic_Posts table.</p> <p>The associations for the application are as follows:</p> <pre><code>Post.php class Post extends AppModel { public $name = 'Post'; public $belongsTo = 'User'; public $hasMany = array('Answer'); // Has many topics that belong to topic post join table... jazz public $hasAndBelongsToMany = array( 'Topic' =&gt; array('with' =&gt; 'TopicPost') ); } Topic.php class Topic extends AppModel { public $hasMany = array( 'TopicPost' ); } TopicPost.php class TopicPost extends AppModel { public $belongsTo = array( 'Topic', 'Post' ); } </code></pre> <p>When a user views a topic e.g. <code>/topics/view/topicname</code> I want to show all the posts that contain that Topic.</p> <p>So far I have the following method in my TopicsController for the view:</p> <pre><code>public function view ( $slug ) { $topic = $this-&gt;Topic-&gt;find('first', array('conditions'=&gt;array('Topic.slug'=&gt;$slug))); $this-&gt;set('topic', $topic); $this-&gt;set('title_for_layout', $topic['Topic']['title'] . ' &amp;ndash; Topics'); $this-&gt;paginate = array ( 'Post' =&gt; array ( 'limit'=&gt;15, 'conditions'=&gt;array ( 'Post.status'=&gt;array(1,2), 'TopicPost.topic_id' =&gt; $topic['Topic']['id'], ), 'order'=&gt;array('Post.datetime'=&gt;'desc'), 'contain'=&gt;array('User'=&gt;'Profile', 'TopicPost') ) ); $posts = $this-&gt;paginate('Post'); // this one $this-&gt;set('posts', $posts); </code></pre> <p>}</p> <p>And so that I can use Posts and TopicPosts I have added: <code>public $uses = array('Topic','TopicPost','Post');</code> to the top of the controller and made all models act as containable.</p> <p>So basically I need to find Posts that have a match in the database model TopicPosts for the id of the topic I'm viewing.</p>
 

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