diff --git a/app/models/applied_project.rb b/app/models/applied_project.rb
index 68095d0ea..8362cfa70 100644
--- a/app/models/applied_project.rb
+++ b/app/models/applied_project.rb
@@ -14,7 +14,8 @@ class AppliedProject < ApplicationRecord
   belongs_to :project
 
   has_many :applied_messages, as: :applied, dependent: :destroy
-  has_many :forge_activities, as: :forge_act, dependent: :destroy
+  # has_many :forge_activities, as: :forge_act, dependent: :destroy
+
+  enum status: {canceled: -1, common: 0, accepted: 1, refused: 2} # -1 已取消 0 待操作 1 已接收 2 已拒绝
 
-  scope :pending, -> { where(status: 0) }
 end
diff --git a/app/models/concerns/dcodes.rb b/app/models/concerns/dcodes.rb
new file mode 100644
index 000000000..f76b4b0f8
--- /dev/null
+++ b/app/models/concerns/dcodes.rb
@@ -0,0 +1,13 @@
+module Dcodes
+  DCODES = %W(1 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)
+
+  extend ActiveSupport::Concern
+
+  def generate_dcode(field, num, pre='')
+    code = DCODES.sample(num).join
+    while self.class.exists?("#{field}": pre+code) do
+      code = DCODES.sample(num).join
+    end
+    code
+  end
+end
\ No newline at end of file
diff --git a/app/models/project.rb b/app/models/project.rb
index b61f05689..f58f9f236 100644
--- a/app/models/project.rb
+++ b/app/models/project.rb
@@ -66,6 +66,7 @@ class Project < ApplicationRecord
   include Publicable
   include Watchable
   include ProjectOperable
+  include Dcodes
 
   # common:开源托管项目
   # mirror:普通镜像项目，没有定时同步功能
@@ -105,7 +106,7 @@ class Project < ApplicationRecord
   has_many :pinned_projects, dependent: :destroy 
   has_many :has_pinned_users, through: :pinned_projects, source: :user
 
-  after_save :check_project_members, :reset_cache_data
+  after_save :check_project_members, :reset_cache_data, :set_invite_code
   after_destroy :reset_cache_data
   scope :project_statics_select, -> {select(:id,:name, :is_public, :identifier, :status, :project_type, :user_id, :forked_count, :visits, :project_category_id, :project_language_id, :license_id, :ignore_id, :watchers_count, :created_on)}
   scope :no_anomory_projects, -> {where("projects.user_id is not null and projects.user_id != ?", 2)}
@@ -123,6 +124,12 @@ class Project < ApplicationRecord
     self.reset_user_cache_async_job(self.owner)
   end
 
+  def set_invite_code
+    if self.invite_code.nil?
+      self.update(invite_code: self.generate_dcode('invite_code', 6))
+    end
+  end
+
   def self.search_project(search)
     ransack(name_or_identifier_cont: search)
   end
diff --git a/app/views/repositories/detail.json.jbuilder b/app/views/repositories/detail.json.jbuilder
index 3cf3858d6..1da871486 100644
--- a/app/views/repositories/detail.json.jbuilder
+++ b/app/views/repositories/detail.json.jbuilder
@@ -7,6 +7,7 @@ else
   json.readme @result[:readme].merge(content: readme_render_decode64_content(@result[:readme]["content"], nil))
 end
 json.identifier render_identifier(@project)
+json.invite_code @project.invite_code
 json.name @project.name
 json.description  @project.description
 json.project_id @project.id