The begining of installable modules #36

Allow modules access to manipulate the cp menu.
Modules must now first be installed and activated before use.
Added a basic CRUD core model.
Add better error detection for error thrown by admin menu helper.
Added initial core modules.

application/config/autoload.php

@@ -64,7 +64,7 @@
 |	$autoload['helper'] = array('url', 'file');
 */
 
-$autoload['helper'] = array('url', 'custom_functions', 'form', 'ssl', 'content/content', 'navigations/navigations');
+$autoload['helper'] = array('url', 'custom_functions', 'form', 'ssl', 'content/content', 'navigations/navigations', 'addons/addons');
 
 
 /*

application/config/constants.php

@@ -44,7 +44,7 @@
 | Defines the version number for cms canvas
 |
 */
-define('CC_VERSION', '1.2.0');
+define('CC_VERSION', '1.3.0');
 
 /*
 |--------------------------------------------------------------------------
@@ -64,6 +64,14 @@
 */
 define('ADMIN_PATH', 'sitemin');
 
+/*
+|--------------------------------------------------------------------------
+| System Path
+|--------------------------------------------------------------------------
+|
+*/
+define('SYSTEM_PATH', CMS_ROOT . 'system/');
+
 /*
 |--------------------------------------------------------------------------
 | Theme Path
@@ -277,20 +285,22 @@
 |
 */
 $admin_access_options = array(
-    ADMIN_PATH . '/content/entries'      => 'Content / Entries',
-    ADMIN_PATH . '/calendar'             => 'Calendar',
-    ADMIN_PATH . '/calendar/entries'     => 'Calendar / Entries',
-    ADMIN_PATH . '/navigations'          => 'Content / Navigations',
-    ADMIN_PATH . '/galleries'            => 'Content / Galleries',
-    ADMIN_PATH . '/users'                => 'Users',
-    ADMIN_PATH . '/users/groups'         => 'User Groups',
-    ADMIN_PATH . '/content/types'        => 'Tools / Content Types',
-    ADMIN_PATH . '/content/snippets'     => 'Tools / Code Snippets',
-    ADMIN_PATH . '/categories'           => 'Tools / Categories',
-    ADMIN_PATH . '/settings/theme-editor' => 'Tools / Theme Editor',
-    ADMIN_PATH . '/settings/general-settings' => 'General Settings',
-    ADMIN_PATH . '/settings/clear-cache' => 'Settings / Clear Cache',
-    ADMIN_PATH . '/settings/server-info' => 'Settings / Server Info',
+    ADMIN_PATH . '/addons/admin-modules'        => 'Addons / Modules',
+    ADMIN_PATH . '/addons/admin-plugins'        => 'Addons / Plugins',
+    ADMIN_PATH . '/content/entries'             => 'Content / Entries',
+    ADMIN_PATH . '/calendar'                    => 'Calendar',
+    ADMIN_PATH . '/calendar/entries'            => 'Calendar / Entries',
+    ADMIN_PATH . '/galleries'                   => 'Content / Galleries',
+    ADMIN_PATH . '/navigations'                 => 'Content / Navigations',
+    ADMIN_PATH . '/categories'                  => 'Tools / Categories',
+    ADMIN_PATH . '/content/snippets'            => 'Tools / Code Snippets',
+    ADMIN_PATH . '/content/types'               => 'Tools / Content Types',
+    ADMIN_PATH . '/settings/theme-editor'       => 'Tools / Theme Editor',
+    ADMIN_PATH . '/settings/clear-cache'        => 'Settings / Clear Cache',
+    ADMIN_PATH . '/settings/general-settings'   => 'Settings / General',
+    ADMIN_PATH . '/settings/server-info'        => 'Settings / Server Info',
+    ADMIN_PATH . '/users'                       => 'Users',
+    ADMIN_PATH . '/users/groups'                => 'User Groups',
 );
 
 define('ADMIN_ACCESS_OPTIONS', serialize($admin_access_options));

application/core/Admin_Controller.php

@@ -1,8 +1,27 @@
-<?php (defined('BASEPATH')) OR exit('No direct script access allowed');
+<?php  defined('BASEPATH') OR exit('No direct script access allowed');
+/**
+ * PageStudio
+ *
+ * A web application for managing website content. For use with PHP 5.4+
+ * 
+ * This application is based on the on the CMS Canvas, the CodeIgniter 
+ * application, http://cmscanvas.com/. It has been greatly altered to 
+ * work for the purposes of our development team. Additional resources 
+ * and concepts have been borrowed from PyroCMS http://pyrocms.com, 
+ * for further improvement and reliability. 
+ *
+ * @package     PageStudio
+ * @author      Cosmo Mathieu <cosmo@cosmointeractive.co>
+ * @copyright   Copyright (c) 2015, CosmoInteractive, LLC
+ * @license     MIT License
+ * @link        http://pagestudiocms.com
+ */
+
+// ------------------------------------------------------------------------
 
 class Admin_Controller extends MY_Controller
 {
-	function __construct()
+	public function __construct()
 	{
 		parent::__construct();
 
@@ -13,9 +32,14 @@ function __construct()
             ->group_types(array(ADMINISTRATOR))
             ->unauthenticated_redirect(ADMIN_PATH . '/users/login')
             ->require_auth();
+
+        // -------------------------------------
+		// Build Admin Navigation
+		// -------------------------------------       
+        $this->template->set('admin_menu_items', get_admin_module_menu_items());
 
         // Load jQuery by default
-        $this->template->add_package(array('jquery', 'jquerytools', 'admin_jqueryui'));
+        $this->template->add_package(['jquery', 'jquerytools', 'admin_jqueryui']);
 	}
 
     public function _remap($method, $params = array())

application/core/MY_Controller.php

@@ -2,9 +2,17 @@
 
 class MY_Controller extends CI_Controller
 {
-	function __construct()
+    /**
+     * @var  The currently loaded module
+     */
+    public $module;
+
+	public function __construct()
 	{
 		parent::__construct();
+
+        // Only allow access to installed modules
+        $this->module_install_check();
 
         // Load in the admin helper functions if the current user is an administrator
         if ($this->secure->group_types(array(ADMINISTRATOR))->is_auth())
@@ -37,12 +45,51 @@ function __construct()
         }
 
         $this->template->set_meta_title(ucwords($title) . " | " . $this->settings->site_name);
-
+        
         // Set Group
         if ($this->session->userdata('user_session'))
         {
             $this->group_id = $this->session->userdata('user_session')->group_id;
             $this->Group_session = $this->session->userdata('group_session');
         }
 	}
+
+    // ---------------------------------------------------------------
+
+    /**
+     * Only allow access to registered/activate modules
+     * 
+     * @return  bool True or False
+     */
+    public function module_install_check()
+    {
+        ci()->load->ext_model('addons_model', APPPATH . 'modules/addons/models');
+        $module_model = new Addons_model('modules');
+
+        $this->module = ci()->router->fetch_module();
+
+        // Load all modules (the Events library uses them all) and make their details widely available
+		ci()->enabled_modules = $module_model->get_modules(1);
+
+        if( ! $module_model->is_enabled($this->module))
+        {
+            // If module is not installed and is front controller show 404
+            if (is_a($this, 'Admin_Controller'))
+            {
+            }
+            show_error('The <b>' . ucfirst($this->module) . '</b> module has been deactivated or has yet to be installed, please refer to your system administrator.', 500);
+        }
+    }
 }
+
+/**
+ * Returns the CodeIgniter object.
+ *
+ * Example: ci()->db->get('table');
+ *
+ * @return \CI_Controller
+ */
+function ci()
+{
+	return get_instance();
+}

application/core/MY_Loader.php

@@ -42,6 +42,10 @@ public function ext_view($folder, $view, $vars = array(), $return = FALSE)
      */
     public function ext_model($model, $path = NULL, $object_name = NULL, $connect = FALSE)
     {
+        /** Hack! Load our core model if not already  */
+        require_once SYSTEM_PATH ."core/Model.php";
+        require_once APPPATH ."core/MY_Model.php";
+
         if(is_null($path)) {
             show_error('The model path for "'.$model.'" cannot be left to EMPTY. Error triggered in '.APPPATH.'core/MY_Loader.php line 45');
         }