课程、项目上传文件为空时给出提醒

app/views/files/create.js.erb

@@ -25,7 +25,12 @@ $('#upload_file_div').slideToggle('slow');
     closeModal();
     $("#resource_list").html('<%= j(render partial:  "project_file_new" ,locals: {project: @project}) %>');
 //    添加文件上传成功提示,
+    <% if params[:attachments].nil? %>
+        var div = $('<div id="addBox" class="flash warning">您上传了一个空文件！</div>');
+    <% else %>
         var div = $('<div id="addBox" class="flash notice">文件上传成功！</div>');
+
+    <% end %>
         $("#course_list").prepend(div);
         setTimeout( function(){div.remove();},3000)
   <%elsif  @course%>
@@ -34,7 +39,11 @@ $('#upload_file_div').slideToggle('slow');
     $("#courses_files_count_info").html("<%= @all_attachments.count%>");
     $("#courses_files_count_nav").html("(<%= @all_attachments.count%>)")
     //    添加文件上传成功提示,
+    <% if params[:attachments].nil? %>
+        var div = $('<div id="addBox" class="flash warning">您上传了一个空文件！</div>');
+    <% else %>
         var div = $('<div id="addBox" class="flash notice">文件上传成功！</div>');
+    <% end %>
     $("#course_list").prepend(div);
     setTimeout( function(){div.remove();},3000)
   <% end %>