diff --git a/app/Http/Controllers/ColleaguesController.php b/app/Http/Controllers/ColleaguesController.php
index 8d42b5d8..81a9303e 100644
--- a/app/Http/Controllers/ColleaguesController.php
+++ b/app/Http/Controllers/ColleaguesController.php
@@ -7,6 +7,9 @@
 
 class ColleaguesController extends Controller
 {
+    use PublicUrl;
+    const DISK = 'colleagues_images';
+
     public function listColleagues(Request $request)
     {
         $colleagues = Colleagues::orderBy('name')->get();
@@ -20,11 +23,6 @@ public function listColleagues(Request $request)
         return $colleagues;
     }
 
-    private static function _publicUrl($file, $disk = 'colleagues_images')
-    {
-        return asset(\Storage::disk($disk)->url($file));
-    }
-
     private static function _expandUrls($colleague)
     {
         if ($colleague instanceof Colleagues) {
diff --git a/app/Http/Controllers/PostsController.php b/app/Http/Controllers/PostsController.php
index 6855cc07..76171df5 100644
--- a/app/Http/Controllers/PostsController.php
+++ b/app/Http/Controllers/PostsController.php
@@ -14,6 +14,8 @@ class PostsController extends Controller
     {
         _after as _after_original;
     }
+    use PublicUrl;
+    const DISK = 'posts_images';
     const PAGESIZE = 20;
 
     public function byId(Request $request)
@@ -210,11 +212,6 @@ private static function _expandUrls($post)
         return $post;
     }
 
-    private static function _publicUrl($file, $disk = 'posts_images')
-    {
-        return asset(\Storage::disk($disk)->url($file));
-    }
-
     private static function _makeThumbnail($posts, $enabled = true)
     {
         $result = $posts->paginate(self::PAGESIZE);
diff --git a/app/Http/Controllers/PublicUrl.php b/app/Http/Controllers/PublicUrl.php
new file mode 100644
index 00000000..790b82f0
--- /dev/null
+++ b/app/Http/Controllers/PublicUrl.php
@@ -0,0 +1,14 @@
+<?php
+
+namespace App\Http\Controllers;
+
+/**
+ * @codeCoverageIgnore
+ */
+trait PublicUrl
+{
+    private static function _publicUrl($file, $disk = self::DISK)
+    {
+        return asset(\Storage::disk($disk)->url($file));
+    }
+}