调整

db/migrate/20190314080809_create_shixun_student_works.rb

@@ -1,4 +1,17 @@
 class CreateShixunStudentWorks < ActiveRecord::Migration
+  DCODES = %W(2 3 4 5 6 7 8 9 a b c f e f g h i j k l m n o p q r s t u v w x y z)
+
+  def down_generate_identifier type
+    if type == "game"
+      code = DCODES.sample(12).join
+      return down_generate_identifier(type) if Game.where(identifier: code).present?
+    elsif type == "myshixun"
+      code = DCODES.sample(10).join
+      return down_generate_identifier(type) if Myshixun.where(identifier: code).present?
+    end
+    code
+  end
+
   def up
     ActiveRecord::Base.transaction do
       begin
@@ -20,6 +33,7 @@ class CreateShixunStudentWorks < ActiveRecord::Migration
             end
             gshixun = g.fork(shixun.gpid, user.gid)
             shixun_tomcat = Redmine::Configuration['shixun_tomcat']
+
             code = down_generate_identifier("myshixun")
             # 一般通过默认分支是否存在来判断一个项目是否fork成功
             if gshixun.try(:id).present?
@@ -64,7 +78,7 @@ class CreateShixunStudentWorks < ActiveRecord::Migration
         end
       rescue Exception => e
         puts ("###failed to exec shixun: current task id is #{e}")
-        g.delete_project(gshixun.id) if gshixun.try(:id).present?
+        # g.delete_project(gshixun.id) if gshixun.try(:id).present?
         raise ActiveRecord::Rollback
       end
     end