首页加入项目增加已是当前项目的判断

app/controllers/applied_project_controller.rb

@@ -6,6 +6,10 @@ class AppliedProjectController < ApplicationController
     @project = Project.find_by_id(params[:project_id])
     if params[:project_join]
       if @project
+        user = User.find @user_id
+        if user.member_of?(@project)
+          @status = 3
+        else
           @applieds = AppliedProject.where("user_id = ? and project_id = ?", params[:user_id],params[:project_id])
           if  @applieds.count == 0
             appliedproject = AppliedProject.create(:user_id => params[:user_id], :project_id => params[:project_id])
@@ -14,6 +18,7 @@ class AppliedProjectController < ApplicationController
           else
             @status = 1
           end
+        end
       else
         @status = 0
       end

app/views/applied_project/applied_join_project.js.erb

@@ -4,6 +4,8 @@
     alert("请勿重复申请加入该项目");
 <% elsif @status == 2%>
     alert("申请成功");
+<% elsif @status == 3%>
+    alert("您已加入该项目");
 <%else%>
     alert("申请失败");
 <%end%>