HABTM Add & Delete Behavior for CakePHP 2.0
The easy way to incrementally add|delete an HABTM association records is to use this Behavior, written by Brandon Parise:
HABTM Add & Delete Behavior (posted May 9th 2007)
But since it was written by the age of CakePHP v1.2, it seems to malfunction with the current head version of CakePHP Framework, which is 2.0.x - so I've came up with a little fixation here.
Updated Version of ExtendAssociationsBehavior for CakePHP 2.0.x
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Patch|Diff
$ diff -u old new
--- Vendor/Model/Behavior/ExtendAssociationsBehavior.php 2012-01-10 23:31:14.000000000 +0900
+++ Vendor/Model/Behavior/ExtendAssociations2Behavior.php 2012-01-10 23:33:57.000000000 +0900
@@ -1,5 +1,6 @@
<?php
-class ExtendAssociationsBehavior extends ModelBehavior {
+App::uses('ModelBehavior', 'Model');
+class ExtendAssociations2Behavior extends ModelBehavior {
/**
* Model-specific settings
* @var array
@@ -44,7 +45,7 @@
// important to use array_unique() since merging will add
// non-unique values to the array.
$data[$assoc][$assoc] = array_unique(am($data[$assoc][$assoc], $assoc_ids));
- return $model->save($data);
+ return $model->save($data, array('fieldList'=>array($assoc)));
}
// association doesn't exist, return false
@@ -82,7 +83,7 @@
// which is the ones we want to re-save.
$data[$assoc][$assoc] = array_diff($data[$assoc][$assoc], $assoc_ids);
}
- return $model->save($data);
+ return $model->save($data, array('fieldList'=>array($assoc)));
}
// association doesn't exist, return false
@@ -122,7 +123,7 @@
// unbind all models except the habtm association
$this->unbindAll($model, array('hasAndBelongsToMany' => array($assoc)));
- $data = $model->find(array($model->name.'.'.$model->primaryKey => $id));
+ $data = $model->findById($id);
$model->recursive = $tmp_recursive;
$model->cacheQueries = $tmp_cacheQueries;
@@ -149,8 +150,8 @@
*/
function unbindAll(&$model, $exceptions = array()) {
$unbind = array();
- foreach($model->__associations as $type) {
- foreach($model->{$type} as $assoc=>$assocData) {
+ foreach($model->_associations as $type) {
+ foreach($model->$type as $assoc=>$assocData) {
// if the assoc is NOT in the exceptions list then
// add it to the list of models to be unbound.
if(@!in_array($assoc, $exceptions[$type])) {
@@ -164,3 +165,4 @@
}
}
}
+
Usage
There's no change in usage/method API:
## add
$model->habtmAdd($assoc_name, $from_id, array($to_id1, $to_id2, ...));
e.g. $this->Post->habtmAdd('PostsTag', 1, array(2, 3));
## delete
$model->habtmDelete($assoc_name, $from_id, array($to_id1, $to_id2, ...));
e.g. $this->Post->habtmAdd('PostsTag', 1, array(3));
## delete all
$model->habtmDeleteAll($assoc_name, $from_id);
Well thats it for now, and thanks Brian for sharing such cool behavior.
It should be noted though that the delete and deleteall methods do not function properly as they are not removing data from the database. I am currently working to rewrite this behavior.
+ $data = $model->findById($id);
This new line of yours no longer works if your model is using some other id column. Where as the old version catered for that well.
$data = $model->findById($id);
with the following
$data = $model->find("first", array("conditions" => array($model->name.'.'.$model->primaryKey => $id)));