lecturer lib added

resources/views/columns/library_items/action.blade.php

@@ -1,6 +1,8 @@
 <div>
-    <x-button amber>
-        <i class="fa fa-thin fa-book-open mr-2"></i>
-        Öffnen
-    </x-button>
+    @if(str($row->value)->contains('http'))
+        <x-button amber href="{{ $row->value }}" target="_blank">
+            <i class="fa fa-thin fa-book-open mr-2"></i>
+            Öffnen
+        </x-button>
+    @endif
 </div>