enhance assets function

 - add abilty to create group assets
 - create assets helper to render group assets
 - added config option `render_all_assets`

Author: REJack

config/twiggy.php

@@ -179,6 +179,19 @@
 $config['twiggy']['load_twig_engine'] = false;
 
 
+/*
+|--------------------------------------------------------------------------
+| Render Assets incl. Groups
+|--------------------------------------------------------------------------
+|
+| If you activate this any assets including group asset get rendered
+| through {{asset}} in layout/template
+|
+*/
+
+$config['twiggy']['render_all_assets'] = false;
+
+
 /*
 |--------------------------------------------------------------------------
 | Syntax Delimiters

helpers/twiggy_helper.php

@@ -1,4 +1,25 @@
 <?php
+defined('BASEPATH') OR exit('No direct script access allowed');
 
+/**
+ * Twiggy - Twig template engine implementation for CodeIgniter
+ *
+ * Twiggy is not just a simple implementation of Twig template engine
+ * for CodeIgniter. It supports themes, layouts, templates for regular
+ * apps and also for apps that use HMVC (module support).
+ *
+ * @package   			CodeIgniter
+ * @subpackage			Twiggy
+ * @author    			(Original Author) Edmundas Kondrašovas <as@edmundask.lt>
+ * @author    			Raphael "REJack" Jackstadt <info@rejack.de>
+ * @license   			http://www.opensource.org/licenses/MIT
+ * @version   			0.9.8
+ * @copyright 			Copyright (c) 2012-2014 Edmundas Kondrašovas <as@edmundask.lt>
+ * @copyright 			Copyright (c) 2015-2017 Raphael "REJack" Jackstadt <info@rejack.de>
+ */
 
-/* End of file twiggy_helper.php */
+function assets($group = NULL)
+{
+	$CII =& get_instance();
+	return $CII->twiggy->_compile_group_assetdata($group);
+}

libraries/Twiggy.php

@@ -45,7 +45,7 @@ class Twiggy {
 
     private $system_register_functions = array('get_class', 'defined', 'isset', 'realpath', 'strpos', 'debug_backtrace');
 
-    private $system_register_safe_functions = array();
+    private $system_register_safe_functions = array('assets');
 
 
     public function __construct()
@@ -316,9 +316,12 @@ public function unset_meta()
      * @return  object  instance of this class
      */
 
-    public function asset($type, $name, $value, $extra=array())
-    {
-        $this->_asset[$name] = array('type' => $type, 'value' => $value, 'extra' => $extra);
+    public function asset($type, $value, $group=NULL, $extra=array())
+    {   
+        if ($group)
+            $this->_asset[$group][] = array('type' => $type, 'value' => $value, 'extra' => $extra);
+        else
+            $this->_asset[] = array('type' => $type, 'value' => $value, 'extra' => $extra);
         return $this;
     }
 
@@ -486,6 +489,22 @@ private function _compile_assetdata()
         return $html;
     }
 
+    /**
+     * Compile group asset data into pure HTML
+     *
+     * @access  private
+     * @return  string  HTML
+     */
+
+    public function _compile_group_assetdata($group)
+    {
+        if ( ! isset($this->_asset[$group]))
+            return;
+        $html = '';
+        foreach ($this->_asset[$group] as $asset) $html .= $this->_asset_to_html($asset);
+        return $html;
+    }
+
     /**
      * Convert meta tag array to HTML code
      *
@@ -515,6 +534,11 @@ private function _meta_to_html($meta)
 
     private function _asset_to_html($asset)
     {
+        if ( ! isset($asset['type']) && isset($asset[0]) && $this->_config['render_all_assets'])
+            $asset = $asset[0];
+        else 
+            return;
+
         if($asset['type'] == 'script'){
             $extra = '';
             if(isset($asset['extra'])){