Abstract list working in general, tested with single example

src/admin/abstract/view/list.php

@@ -0,0 +1,67 @@
+<?php
+
+// No direct access.
+use Joomla\CMS\MVC\View\HtmlView;
+use Joomla\CMS\Router\Route;
+
+defined('_JEXEC') or die;
+
+abstract class AbstractClubsViewList extends HtmlView
+{
+    
+    /**
+     * @var AbstractCommonClubsModel
+     */
+    protected $objects;
+    protected $delUrl;
+    protected $addUrl;
+    protected $changeUrl;
+    
+    private $prepared = FALSE;
+    
+    public function prepareDisplay()
+    {
+        $this->prepared = TRUE;
+        
+        $this->objects = $this->loadObjects();
+        $baseUrl = "index.php?option=com_clubs";
+        $viewName = $this->getSingleViewName();
+        $controllerName = $this->getControllerName();
+        
+        $this->addUrl = Route::_("$baseUrl&view=$viewName&id=new");
+        $this->changeUrl = Route::_("$baseUrl&view=$viewName&id=__ID__");
+        $this->delUrl = Route::_("$baseUrl&task=$controllerName.delete&id=__ID__");
+    }
+    
+    public function display($tpl = null)
+    {
+        if(!$this->prepared)
+            $this->prepareDisplay();
+            
+        parent::display($tpl);
+    }
+    
+    protected abstract function getSingleBaseName();
+    
+    protected function getControllerName()
+    {
+        return $this->getSingleBaseName();
+    }
+    
+    protected function getSingleViewName()
+    {
+        return $this->getSingleBaseName();
+    }
+    
+    /**
+     * @return AbstractCommonClubsModelFactory
+     */
+    protected abstract function getFactory();
+    
+    protected function loadObjects()
+    {
+        $factory = $this->getFactory();
+        return $factory->loadElements();
+    }
+    
+}

src/admin/abstract/view/single.php

@@ -11,6 +11,9 @@ abstract class AbstractClubsViewSingle extends HtmlView
 {
     
     protected $address;
+    /**
+     * @var AbstractCommonClubsModel
+     */
     protected $object;
     protected $isNew;
     
@@ -23,32 +26,28 @@ abstract class AbstractClubsViewSingle extends HtmlView
         $input = Factory::getApplication()->input;
         $id =  $input->get->get('id');
         
-        $modelClass = 'Clubs' . $this->getModelName();
+        $controllerName = $this->getControllerName();
         
-        $controller = $this->getControllerName();
         if($id === 'new')
         {
-            $this->address = Route::_("index.php?option=com_clubs&task={$controller}.new");
-            $this->object = call_user_func(array($modelClass, 'create' . $this->getModelName()));
+            $this->address = Route::_("index.php?option=com_clubs&task={$controllerName}.new");
+            $this->object = $this->createNewObject();
             $this->isNew = true;
         }
         else if(is_numeric($id))
         {
-            $this->address = Route::_("index.php?option=com_clubs&task={$controller}.change");
-            $this->object = call_user_func(array($modelClass, 'load' . $this->getModelName()), (int) $id);
+            $id = (int) $id;
+            $this->address = Route::_("index.php?option=com_clubs&task={$controllerName}.change&id=$id");
+            $this->object = $this->loadObject($id);
             $this->isNew = false;
         }
         else
-            throw new Exception('Need an object id.');
+            throw new Exception('Need a valid object id.');
         
-        if($input->get->get('data', null, 'json') != null)
+        $jsonData = $input->get->get('data', null, 'json');
+        if($jsonData !== null)
         {
-            // Restore previous data
-            $dataurl = $input->get->get('data', null, 'json');
-            $data = json_decode($dataurl, true);
-            
-            $controller = $this->getElementController();
-            $controller->applyData($this->object, $data);
+            $this->object->unpack($jsonData);
             
         }
     }
@@ -61,26 +60,45 @@ abstract class AbstractClubsViewSingle extends HtmlView
         parent::display($tpl);
     }
     
-    protected abstract function getViewName();
+//     protected abstract function getViewName();
     
-    protected function getControllerName()
+    protected abstract function getControllerName();
+    
+//     protected function getModelName()
+//     {
+//         $name = $this->getViewName();
+//         return $this->capitalize($name);
+//     }
+    
+//     protected function getModelClass()
+//     {
+//         return 'Clubs' . $this->getModelName();
+//     }
+    
+//     private function capitalize($s)
+//     {
+//         $first = substr($s, 0, 1);
+//         $rest = substr($s, 1);
+//         return strtoupper($first) . $rest;
+//     }
+    
+//     protected abstract function getElementController();
+    
+    /**
+     * @return AbstractCommonClubsModelFactory
+     */
+    protected abstract function getFactory();
+    
+    protected function createNewObject()
     {
-        return $this->getViewName();
+        $factory = $this->getFactory();
+        return $factory->createNew();
     }
     
-    protected function getModelName()
+    protected function loadObject($id)
     {
-        $name = $this->getViewName();
-        return $this->capitalize($name);
+        $factory = $this->getFactory();
+        return $factory->loadById($id);
     }
     
-    private function capitalize($s)
-    {
-        $first = substr($s, 0, 1);
-        $rest = substr($s, 1);
-        return strtoupper($first) . $rest;
-    }
-    
-    protected abstract function getElementController();
-    
 }

src/admin/common/abstract/model.php

@@ -327,12 +327,15 @@ abstract class AbstractCommonClubsModel
         $vals = $this->filterPackData($vals);
         
         $json = json_encode($vals);
-        return urldecode($json);
+        return urlencode($json);
     }
     
-    public function unpack($str)
+    public function unpack($str, $decode = false)
     {
-        $json = urlencode($str);
+        if($decode)
+            $json = urldecode($str);
+        else 
+            $json = $str;
         $data = json_decode($json, true);
         
         $vals = $this->unpackExternalReferencesFromKeys($data);

src/admin/views/offers/tmpl/default.php

@@ -11,18 +11,18 @@ defined('_JEXEC') or die;
   <thead>
   <tr>
     <th width='30%'>Bezeichnung</th>
-    <th width='5%'>L&ouml;schen?</th>
+    <th width='5%'></th>
     <th width='5%'>id</th>
   </tr>
   </thead>
-<?php foreach($this->offers as $offer): ?>
+<?php foreach($this->objects as $offer): ?>
 <?php $link = Route::_('index.php?option=com_clubs&view=offer&id=' . $offer->getId()); ?>
   <tr>
-    <td><a href='<?php echo $link; ?>'><?php echo htmlentities($offer->getName()); ?></a></td>
-  	<td><a href='<?php echo Route::_('index.php?option=com_clubs&task=offer.delete&id=' . $offer->getId()); ?>'>Del</a></td>
+    <td><a href='<?php echo str_replace('__ID__', $offer->getId(), $this->changeUrl); ?>'><?php echo htmlentities($offer->getName()); ?></a></td>
+  	<td><a href='<?php echo str_replace('__ID__', $offer->getId(), $this->delUrl); ?>'><span class='icon-delete'></span>L&ouml;schen</a></td>
     <td><?php echo htmlentities($offer->getId()); ?></td>
   </tr>
 <?php endforeach; ?>
 </table>
 
-<div><a href='<?php echo Route::_('index.php?option=com_clubs&view=offer&id=new'); ?>'>Neues Angebot anlegen</a></div>
+<div><a href='<?php echo $this->addUrl; ?>'><span class='icon-new'></span>Neues Angebot anlegen</a></div>

src/admin/views/offers/view.html.php

@@ -1,20 +1,27 @@
 <?php
 
-use Joomla\CMS\MVC\View\HtmlView;
 use Joomla\CMS\Toolbar\ToolbarHelper;
 
 // No direct access.
 defined('_JEXEC') or die;
 
-class ClubsViewOffers extends HtmlView
+class ClubsViewOffers extends AbstractClubsViewList
 {
     
     function display($tpl = null)
     {
-        $this->offers = ClubsOffer::loadOffers();
-        
-        ToolbarHelper::title('Club-Management - Angebote');
+        ToolbarHelper::title('Club-Management - Angebote', 'list');
         parent::display($tpl);
     }
+    protected function getFactory()
+    {
+        return new CommonClubsModelFactoryOffer();
+    }
+
+    protected function getSingleBaseName()
+    {
+        return 'offer';
+    }
+
     
 }