Zend_Db_Table_Abstract Loading Joined Models - zend-framework

Question

I have a tables named:
client (id, alias)
post (id, subject)
post_client (id, post_id, client_id)
Many clients can be joined to a post.
Using Zend DB Table abstract I have started to build a model, here are the classes:
ORM_Post
class ORM_Post extends Zend_Db_Table_Abstract {
protected $_name = 'Post';
protected $_dependentTables = array('ORM_Post_Client');
}
ORM_Client
class ORM_Client extends Zend_Db_Table_Abstract {
protected $_name = 'Client';
protected $_dependentTables = array(
'ORM_Post_Client'
);
}
ORM_Post_Client
class ORM_Post_Client extends Zend_Db_Table_Abstract {
protected $_name = 'Post_Client';
protected $_referenceMap = array(
'post' => array(
'columns' => 'post_id',
'refTableClass' => 'ORM_Post',
'refColumns' => 'id'
),
'client' => array(
'columns' => 'client_id',
'refTableClass' => 'ORM_Post_Client',
'refColumns' => 'id'
)
);
}
What I was hoping todo is call an instance of the Post and then load the clients associated aswell as loading an instance of the client and load all posts associated.
So I did this:
$post = new ORM_Post();
$results = $post->fetchAll();
foreach ($results as $key => $result){
$row = $results->current();
$client = $row->findDependentRowset('ORM_Post_Client','client');
}
and I get
Reference rule "client" does not reference table ORM_Post
I have battled with this for hours and cannot see where I'm going wrong. Am I to declare the Post_Client joins inside the client and post model also?
EDIT
Here is what I was after:
$post = new ORM_Post();
$results = $post->fetchAll();
$return = array();
foreach ($results as $result){
$row = $post->find($result->id)->current();
$return[$result->id] = $row->toArray();
$return[$result->id]['clients'] = $row->findManyToManyRowset('ORM_Client', 'ORM_Post_Client')->toArray();
}
return $return;
Thanks for the advice guys, you put me on the right track

Answer 1

in your ORM_Post_Client it should be
'client' => array(
'columns' => 'client_id',
'refTableClass' => 'ORM_Client', //instead of ORM_Post_Client
'refColumns' => 'id'
)
refTableClass => The class name of the parent table. Use the class
name, not the physical name of the SQL table (documentation)
also i think your loop should be :
foreach ($results as $result){
$row = $results->current();
$clients = $row->findDependentRowset('ORM_Post_Client','post');
}
because you are looking for clients of a post which means that post is your rule
($row->findDependentRowset($table, [$rule]); )

Answer 2

This as presented won't work, honestly it makes no sense.
$post = new ORM_Post();
$results = $post->fetchAll();
foreach ($results as $key => $result){
//$row is assigned to the whole fetchall result!
$row = $results->current();
//in this context $client cannot call a dependent rowset.
$client = $row->findDependentRowset('ORM_Post_Client','client');
}
MMc is correct in that you reference table definition was incorrect however your code has some issues as well. Maybe try something like:
$post = new ORM_Post();
$results = $post->fetchAll();
//unless your are going to use the 'key' for something you don't need it
foreach ($results as $result){
//you need each row object in order to call findDependentRowset in a one to many relationship.
$row = $post->find($result->id)->current();
//unless you have multiple rules set up for each table class pair you don't need to specify the rule.
$client = $row->findDependentRowset('ORM_Post_Client');
}