Add |media filter and MediaLibrary::url helper

modules/cms/classes/MediaLibrary.php

@@ -92,11 +92,13 @@ class MediaLibrary
         $cached = Cache::get('cms-media-library-contents', false);
         $cached = $cached ? @unserialize($cached) : [];
 
-        if (!is_array($cached))
+        if (!is_array($cached)) {
             $cached = [];
+        }
 
-        if (array_key_exists($fullFolderPath, $cached))
+        if (array_key_exists($fullFolderPath, $cached)) {
             $folderContents = $cached[$fullFolderPath];
+        }
         else {
             $folderContents = $this->scanFolderContents($fullFolderPath);
 
@@ -391,6 +393,16 @@ class MediaLibrary
         return $path;
     }
 
+    /**
+     * Helper that makes a URL for a media file.
+     * @param string $file
+     * @return string
+     */
+    public static function url($file)
+    {
+        return static::instance()->getPathUrl($file);
+    }
+
     /**
      * Returns a public file URL.
      * @param string $path Specifies the file path relative the the Library root.

modules/cms/formwidgets/MediaFinder.php

@@ -2,6 +2,7 @@
 
 use Lang;
 use ApplicationException;
+use Cms\Classes\MediaLibrary;
 use Backend\Classes\FormWidgetBase;
 
 /**
@@ -66,7 +67,9 @@ class MediaFinder extends FormWidgetBase
      */
     public function prepareVars()
     {
-        $this->vars['value'] = $this->getLoadValue();
+        $value = $this->getLoadValue();
+        $this->vars['value'] = $value;
+        $this->vars['imageUrl'] = $value ? MediaLibrary::url($value) : '';
         $this->vars['field'] = $this->formField;
         $this->vars['prompt'] = str_replace('%s', '<i class="icon-folder"></i>', $this->prompt);
         $this->vars['mode'] = $this->mode;

modules/cms/formwidgets/mediafinder/partials/_image_single.htm

@@ -12,7 +12,7 @@
     <!-- Existing value -->
     <div class="find-object">
         <div class="icon-container">
-            <img data-find-image src="" alt="" />
+            <img data-find-image src="<?= $imageUrl ?>" alt="" />
         </div>
         <div class="info">
             <h4 class="filename">

modules/cms/twig/Extension.php

@@ -70,6 +70,7 @@ class Extension extends Twig_Extension
         return [
             new Twig_SimpleFilter('page', [$this, 'pageFilter'], ['is_safe' => ['html']]),
             new Twig_SimpleFilter('theme', [$this, 'themeFilter'], ['is_safe' => ['html']]),
+            new Twig_SimpleFilter('media', [$this, 'mediaFilter'], ['is_safe' => ['html']]),
         ];
     }
 
@@ -162,6 +163,19 @@ class Extension extends Twig_Extension
         return $result;
     }
 
+    /**
+     * Looks up the URL for a supplied page and returns it relative to the website root.
+     * @param mixed $name Specifies the Cms Page file name.
+     * @param array $parameters Route parameters to consider in the URL.
+     * @param bool $routePersistence By default the existing routing parameters will be included
+     * when creating the URL, set to false to disable this feature.
+     * @return string
+     */
+    public function pageFilter($name, $parameters = [], $routePersistence = true)
+    {
+        return $this->controller->pageUrl($name, $parameters, $routePersistence);
+    }
+
     /**
      * Converts supplied URL to a theme URL relative to the website root. If the URL provided is an
      * array then the files will be combined.
@@ -174,16 +188,13 @@ class Extension extends Twig_Extension
     }
 
     /**
-     * Looks up the URL for a supplied page and returns it relative to the website root.
-     * @param mixed $name Specifies the Cms Page file name.
-     * @param array $parameters Route parameters to consider in the URL.
-     * @param bool $routePersistence By default the existing routing parameters will be included
-     * when creating the URL, set to false to disable this feature.
+     * Converts supplied file to a URL relative to the media library.
+     * @param string $file Specifies the media-relative file
      * @return string
      */
-    public function pageFilter($name, $parameters = [], $routePersistence = true)
+    public function mediaFilter($file)
     {
-        return $this->controller->pageUrl($name, $parameters, $routePersistence);
+        return $this->controller->mediaUrl($file);
     }
 
     /**