1 <?php
 2 
 3 class PaymentAdmin extends ModelAdmin{
 4 
 5     static $url_segment = 'payments';
 6     static $menu_title = 'Payments';
 7     static $menu_priority = 0;
 8 
 9     static $managed_models = array(
10         'PaymentMethod' => array(
11             'collection_controller' => 'PaymentAdmin_CollectionController'  
12         )
13     );
14 
15     public static $model_importers = array();
16     
17 }
18 
19 class PaymentAdmin_CollectionController extends ModelAdmin_CollectionController{
20     
21     function CreateForm(){
22         $form = parent::CreateForm();
23         $options = ClassInfo::subclassesFor("PaymentMethod");
24         unset($options[0]);
25         foreach ($options as $f) {
26             if (singleton($f)->canCreate()) {
27                 $options[$f] = singleton($f)->i18n_singular_name();
28             } else {
29                 unset($options[$f]);
30             }
31         }
32         $form->Fields()->push(new DropdownField("CustomModelClass", _t('PaymentMethod.PaymentTypeName', 'Type'), $options));
33         return $form;
34     }
35     
36     //hacks to allow creating a different class of model within the same collection controller
37         //get correct CMSFields -> AddForm
38         //create correct model -> doCreate
39         
40     function __construct($parent, $model){
41         parent::__construct($parent, $model);
42         $this->backupModelClass = $this->modelClass;
43     }
44     
45     function add($request){
46         $this->storeCustomModelClass();
47         return parent::add($request);
48     }
49     
50     //pass selected model class into form
51     function AddForm(){
52         if($customclass = $this->retrieveCustomModelClass()){
53             $this->modelClass = $customclass;
54         }
55         $form = parent::AddForm();      
56         $this->modelClass = $this->backupModelClass;
57         return $form;
58     }
59     
60     function doCreate($data, $form, $request){
61         if($customclass = $this->retrieveCustomModelClass()){
62             $this->modelClass = $customclass;
63         }
64         $output = parent::doCreate($data, $form, $request);
65         $this->clearCustomModelClass();
66         return $output;
67     }
68     
69     protected function storeCustomModelClass(){
70         if(isset($_REQUEST['CustomModelClass']) && ClassInfo::is_subclass_of($_REQUEST['CustomModelClass'], $this->modelClass)){
71             Session::set($this->class.".CustomModelClass",$_REQUEST['CustomModelClass']);
72         }
73     }
74     protected function retrieveCustomModelClass(){
75         return Session::get($this->class.".CustomModelClass");
76     }
77     protected function clearCustomModelClass(){
78         Session::clear($this->class.".CustomModelClass");
79         $this->modelClass = $this->backupModelClass;
80     }
81     
82 }
83 
84