编辑分组作品时如果不修改分组成员则不能提交

app/views/student_work/edit.html.erb

@@ -34,7 +34,11 @@
         <% if @homework.homework_type == 3 %>
             <span id="min_num_member" style="display: none"><%=@homework.homework_detail_group.min_num %></span>
             <span id="max_num_member" style="display: none"><%=@homework.homework_detail_group.max_num %></span>
-            <%=hidden_field_tag 'group_member_ids', params[:group_member_ids], :value=>User.current.id %>
+            <% str = User.current.id.to_s%>
+            <% @work.student_work_projects.where("is_leader = ?", 0).each do |pro| %>
+                <% str += ','+pro.user_id.to_s %>
+            <% end %>
+            <%=hidden_field_tag 'group_member_ids', params[:group_member_ids], :value=>str %>
         <% end %>
         <div>
           <input type="text" name="student_work[name]" id="student_work_name" placeholder="请简洁的概括作品的功能或特性" class="InputBox  W700" maxlength="200" onkeyup="regexStudentWorkName();" value="<%= @work.name%>">