Filtering on BelongsTO fields in containable

Controller/Component/DataTableComponent.php

@@ -97,12 +97,30 @@ public function getResponse($controller = null, $model=null){
         // check for WHERE statement in GET request
         if(isset($httpGet) && !empty($httpGet['sSearch'])){
             $conditions = $this->getWhereConditions();
-
+
+            $this->controller->paginate = array_merge_recursive($this->controller->paginate, array('conditions'=>$conditions));
+
             if( !empty($this->controller->paginate['contain']) ){
-                $this->controller->paginate = array_merge_recursive($this->controller->paginate, array('contain'=>$conditions));
+                // Apply the conditions to the root model fields
+                $fields = !empty($this->fields) ? $this->fields : $this->controller->paginate['fields'];
+
+                $modelConditions = array();
+                foreach($fields as $x => $column){
+                    // Check that the field is searchable
+                    if( $this->controller->request->query['bSearchable_'.$x] == 'true'){
+                        list($table, $field) = explode('.', $column);
+
+                        // Check that the field is part of the root model with or without the model name appended
+                        if (($table == $this->model->name && in_array($field, $this->controller->paginate['fields'])) || in_array($column, $this->controller->paginate['fields'])){
+                            $modelConditions[] = $column.' LIKE "%'.$this->controller->request->query['sSearch'].'%"';
+                        }
+                    }
+                }
+
+                $this->controller->paginate = array_merge_recursive($this->controller->paginate, array('conditions'=>array("OR" => $modelConditions)));
             }
             else{
-                $this->controller->paginate = array_merge_recursive($this->controller->paginate, array('conditions'=>array('AND'=>$conditions)));
+                $this->controller->paginate = array_merge_recursive($this->controller->paginate, array('conditions'=>$conditions));
             }
             $isFiltered = true;
         }
@@ -233,6 +251,8 @@ private function getWhereConditions(){
             // only create conditions on bSearchable fields
             if( $this->controller->request->query['bSearchable_'.$x] == 'true' ){
 
+                list($table, $field) = explode('.', $column);
+
                 if($this->mDataProp == true){
                     $conditions['OR'][] = array(
                         $this->controller->request->query['mDataProp_'.$x].' LIKE' => '%'.$this->controller->request->query['sSearch'].'%'

composer.json

@@ -0,0 +1,16 @@
+{
+    "name": "cnizzdotcom/cakephp-datatable",
+    "description": "Provides server-side interoperability between CakePHP 2.x and jQuery DataTables plugin.",
+    "type": "cakephp-plugin",
+    "require": {
+        "cakephp/cakephp": "~2.0",
+        "php": ">=5.3"
+    },
+    "license": "MIT",
+    "authors": [
+        {
+            "name": "Chris Nizzardini",
+            "email": "[email protected]"
+        }
+    ]
+}