控制层增加退出项目的限制

app/controllers/projects_controller.rb

@@ -898,7 +898,7 @@ class ProjectsController < ApplicationController
     @project = Project.find params[:id]
     if  User.current.login?
       members = Member.where(:user_id => User.current.id, :project_id=>params[:id]).first
-      if  members != nil
+      if  members != nil && members.roles.first.to_s != "Manager"
         members.destroy
       end
       respond_to do |format|

app/views/layouts/_join_exit_project.html.erb

@@ -16,7 +16,7 @@
 <div style="margin-left: 20px;">
   <% if ((User.current.member_of? @project) && 
     User.current.login? && 
-    @project.members.where("user_id = #{User.current.id}").first.roles.first.to_s != "Manager") %>
+    Member.where(:user_id => User.current.id, :project_id=>@project.id).first.roles.first.to_s != "Manager") %>
       <%= exit_project_link(@project) %>
   <% end %>
 </div>