Created abstract structures to keep complexity and code redundancy at bay.

src/admin/abstract/view/single.php

@@ -0,0 +1,77 @@
+<?php
+
+use Joomla\CMS\Factory;
+use Joomla\CMS\MVC\View\HtmlView;
+use Joomla\CMS\Router\Route;
+
+// No direct access.
+defined('_JEXEC') or die;
+
+abstract class AbstractClubsViewSingle extends HtmlView
+{
+    
+    protected $address;
+    protected $object;
+    protected $isNew;
+    
+    function display($tpl = null)
+    {
+        
+        $input = Factory::getApplication()->input;
+        $id =  $input->get->get('id');
+        
+        $modelClass = 'Clubs' . $this->getModelName();
+        
+        $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()));
+            $this->isNew = true;
+        }
+        else if(is_numeric($id))
+        {
+            $this->address = Route::_("index.php?option=com_clubs&task={$controller}.change");
+            $this->object = call_user_func(array($modelClass, 'load' . $this->getModelName()), (int) $id);
+            $this->isNew = false;
+        }
+        else
+            throw new Exception('Need an object id.');
+            
+        if($input->get->get('data', null, 'json') != null)
+        {
+            // Restore previous data
+            $dataurl = $input->get->get('data', null, 'json');
+            $data = json_decode($dataurl, true);
+            
+            $controller = $this->getElementController();
+            $controller->applyData($this->object, $data);
+            
+        }
+        
+        parent::display($tpl);
+    }
+    
+    protected abstract function getViewName();
+    
+    protected function getControllerName()
+    {
+        return $this->getViewName();
+    }
+    
+    protected function getModelName()
+    {
+        $name = $this->getViewName();
+        return $this->capitalize($name);
+    }
+    
+    private function capitalize($s)
+    {
+        $first = substr($s, 0, 1);
+        $rest = substr($s, 1);
+        return strtoupper($first) . $rest;
+    }
+    
+    protected abstract function getElementController();
+    
+}