!102 修改Attachment模型，修改addon语言包

Merge pull request !102 from 灰大狼/master

@@ -8,10 +8,8 @@ return [
     'addon can not be empty'                      => '插件不能为空',
     'addon can not be empty'                      => '插件不能为空',
     'Keep login'                                  => '保持会话',
     'Keep login'                                  => '保持会话',
     'Forgot password'                             => '忘记密码?',
     'Forgot password'                             => '忘记密码?',
-    'Sign in'                                     => '登入',
     'Username'                                    => '用户名',
     'Username'                                    => '用户名',
     'User id'                                     => '会员ID',
     'User id'                                     => '会员ID',
-    'Username'                                    => '用户名',
     'Nickname'                                    => '昵称',
     'Nickname'                                    => '昵称',
     'Password'                                    => '密码',
     'Password'                                    => '密码',
     'Sign up'                                     => '注 册',
     'Sign up'                                     => '注 册',
@@ -48,7 +46,6 @@ return [
     'Next'                                        => '下一页',
     'Next'                                        => '下一页',
     'Last'                                        => '末页',
     'Last'                                        => '末页',
     'None'                                        => '无',
     'None'                                        => '无',
-    'Home'                                        => '主页',
     'Online'                                      => '在线',
     'Online'                                      => '在线',
     'Logout'                                      => '注销',
     'Logout'                                      => '注销',
     'Profile'                                     => '个人资料',
     'Profile'                                     => '个人资料',
@@ -61,13 +58,9 @@ return [
     'Line'                                        => '行号',
     'Line'                                        => '行号',
     'File'                                        => '文件',
     'File'                                        => '文件',
     'Menu'                                        => '菜单',
     'Menu'                                        => '菜单',
-    'Name'                                        => '名称',
-    'Weigh'                                       => '权重',
     'Type'                                        => '类型',
     'Type'                                        => '类型',
     'Title'                                       => '标题',
     'Title'                                       => '标题',
     'Content'                                     => '内容',
     'Content'                                     => '内容',
-    'Status'                                      => '状态',
-    'Operate'                                     => '操作',
     'Append'                                      => '追加',
     'Append'                                      => '追加',
     'Memo'                                        => '备注',
     'Memo'                                        => '备注',
     'Parent'                                      => '父级',
     'Parent'                                      => '父级',

@@ -21,4 +21,13 @@ class Attachment extends Model
         return strtotime($value);
         return strtotime($value);
     }
     }
 
 
+    protected static function init()
+    {
+        // 如果已经上传该资源，则不再记录
+        self::beforeInsert(function ($model) {
+            if (self::where('url', '=', $model['url'])->find()) {
+                return false;
+            }
+        });
+    }
 }
 }