Loader for Helper-Classes from Plugin

app/Core/Plugin/Base.php

@@ -40,6 +40,17 @@ abstract class Base extends \Kanboard\Core\Base
         return array();
     }
 
+    /**
+     * Returns all helper classes that needs to be stored in the DI container
+     *
+     * @access public
+     * @return array
+     */
+    public function getHelpers()
+    {
+        return array();
+    }
+
     /**
      * Listen on internal events
      *

app/Core/Plugin/Loader.php

@@ -70,6 +70,8 @@ class Loader extends \Kanboard\Core\Base
 
         Tool::buildDic($this->container, $instance->getClasses());
 
+        Tool::buildDICHelpers($this->container, $instance->getHelpers());
+
         $instance->initialize();
         $this->plugins[] = $instance;
     }

app/Core/Tool.php

@@ -55,6 +55,27 @@ class Tool
         return $container;
     }
 
+    /**
+     * Build dependency injection container for custom helpers from an array
+     *
+     * @static
+     * @access public
+     * @param  Container  $container
+     * @param  array      $namespaces
+     * @return Container
+     */
+    public static function buildDICHelpers(Container $container, array $namespaces)
+    {
+        foreach ($namespaces as $namespace => $classes) {
+            foreach ($classes as $name) {
+                $class = '\\Kanboard\\'.$namespace.'\\'.$name;
+                $container['helper']->register($name, $class);
+            }
+        }
+
+        return $container;
+    }
+
     /**
      * Generate a jpeg thumbnail from an image
      *