do rename validation in backend

Author: streamtw

src/controllers/RenameController.php

@@ -22,6 +22,14 @@ public function getRename()
 
         $old_file = parent::getCurrentPath($old_name);
 
+        if (empty($new_name)) {
+            if (File::isDirectory($old_file)) {
+                return $this->error('folder-name');
+            } else {
+                return $this->error('file-name');
+            }
+        }
+
         if (!File::isDirectory($old_file)) {
             $extension = File::extension($old_file);
             $new_name = str_replace('.' . $extension, '', $new_name) . '.' . $extension;

src/lang/en/lfm.php

@@ -36,6 +36,7 @@
     'message-extension_not_found' => 'Please install gd or imagick extension to crop, resize, and make thumbnails of images.',
 
     'error-rename'      => 'File name already in use!',
+    'error-file-name'   => 'File name cannot be empty!',
     'error-file-empty'  => 'You must choose a file!',
     'error-file-exist'  => 'A file with this name already exists!',
     'error-file-size'   => 'File size exceeds server limit! (maximum size: :max)',

src/lang/zh-TW/lfm.php

@@ -36,6 +36,7 @@
     'message-extension_not_found' => '請安裝 gd 或 imagick 以使用縮放、裁剪、及縮圖功能',
 
     'error-rename'      => '名稱重複，請重新輸入！',
+    'error-file-name'   => '請輸入檔案名稱！',
     'error-file-empty'  => '請選擇檔案！',
     'error-file-exist'  => '相同檔名的檔案已存在！',
     'error-file-size'   => '檔案過大，無法上傳! (檔案大小上限: :max)',

src/views/script.blade.php

@@ -137,12 +137,10 @@ function rename(item_name) {
     title: "{{ $lang['message-rename'] }}",
     value: item_name,
     callback: function (result) {
-      if (result !== null) {
-        performLfmRequest('{{ route("unisharp.lfm.getRename") }}', {
-          file: item_name,
-          new_name: result
-        }).done(refreshFoldersAndItems);
-      }
+      performLfmRequest('{{ route("unisharp.lfm.getRename") }}', {
+        file: item_name,
+        new_name: result
+      }).done(refreshFoldersAndItems);
     }
   });
 }