修改删除主版本库后，新建可以设置主版本库

app/helpers/repositories_helper.rb

@@ -236,13 +236,14 @@ module RepositoriesHelper
   # 判断项目是否有主版本库
   def judge_main_repository(pro)
     if pro.repositories.blank?
-      return false
+      status =  false
     else
-      pro.repositories.sort.each do |rep|
-        rep.is_default?
-        return true
+      pro.repositories.each do |rep|
+        status = true and break if rep.is_default?
+        status = false
       end
     end
+    status
   end
   # def cvs_field_tags(form, repository)
     # content_tag('p', form.text_field(