新建项目时候：

如果我的项目中有重名的项目不允许新建

app/helpers/projects_helper.rb

@@ -65,6 +65,16 @@ module ProjectsHelper
     content_tag('div', content, :class => "tabs")   
   end
 
+  # 判断我的项目中是否有重名项目
+  def judge_same_projectname(user, project_name)
+    result = false
+    my_projects = user.projects
+    my_projects.each do |mp|
+      result = true if mp.name == project_name
+    end
+    return result
+  end
+
   # Added by young
   def course_settings_tabs
     tabs = [{:name => 'info', :action => :edit_project, :partial => 'projects/edit', :label => :label_information_plural, :course=>'1'},

public/javascripts/project.js

@@ -425,4 +425,35 @@ $(function(){
 
     personalized_init();
 });
-//cookie记忆html区块 显示/隐藏 的代码 end
+//cookie记忆html区块 显示/隐藏 的代码 end
+
+// 新建项目的时候判断是否与我已有的项目重复
+function judgeprojectname(){
+    $('#new_project').validate({
+        errorPlacement: function(error, element){
+            alert('error')
+        },
+        success: function(label){
+            alert('ok')
+        },
+        onkeyup: false,
+        rules : {
+            name:{required : true,
+                remote : {
+                    url : 'projects/judge_same_projectname',
+                    type:'get',
+                    dataType:'text',
+                    data:{
+                        name : function(){ return $.trim( $("#name").val() ); }
+                    },
+                    dataFilter:function( data ){
+                        if( data=='true')return false; else return true;
+                    }
+                }
+            }
+        },
+        messages : {
+            name:{required : "请填写项目名称！",remote:'您已新建过同名项目，请修改项目名称！'}
+        }
+    });
+}