Better messaging

Signed-off-by: snipe <snipe@snipe.net>

app/Http/Controllers/CustomFieldsController.php

@@ -141,11 +141,15 @@ class CustomFieldsController extends Controller
             if ($field->fieldset()->detach($fieldset_id)) {
                 return redirect()->route('fieldsets.show', ['fieldset' => $fieldset_id])
                     ->with("success", trans('admin/custom_fields/message.field.delete.success'));
-            }   
-             
+            } else {
+                return redirect()->back()->withErrors(['message' => "Field is in use and cannot be deleted."]);
+            }  
+
         }
-       
+
         return redirect()->back()->withErrors(['message' => "Error deleting field from fieldset"]);
+
+       
     }
 
     /**