#446: added ability to create project aliases

app/controllers/projects/projects_controller.rb

@@ -114,7 +114,9 @@ class Projects::ProjectsController < Projects::BaseController
   def fork
     owner = (Group.find params[:group] if params[:group].present?) || current_user
     authorize! :write, owner if owner.class == Group
-    if forked = @project.fork(owner, params[:fork_name]) and forked.valid?
+
+    is_alias = params[:alias] == 'true'
+    if forked = @project.fork(owner, params[:fork_name], is_alias) and forked.valid?
       redirect_to forked, notice: t("flash.project.forked")
     else
       flash[:warning] = t("flash.project.fork_error")

app/models/concerns/git.rb

@@ -153,7 +153,20 @@ module Git
   end
 
   def fork_git_repo
-    dummy = Grit::Repo.new(path) rescue parent.repo.fork_bare(path, shared: false)
+    dummy = Grit::Repo.new(path) rescue nil
+    unless dummy
+      if alias_from_id
+        aliases_path = File.join(APP_CONFIG['git_path'], 'git_projects', '.aliases')
+        FileUtils.mkdir_p(aliases_path)
+        alias_path   = File.join(aliases_path, "#{alias_from_id}.git")
+        if !Dir.exists?(alias_path) && alias_from
+          FileUtils.mv(alias_from.path, alias_path, force: true)
+        end
+        FileUtils.ln_sf alias_path, path
+      else
+        parent.repo.fork_bare(path, shared: false)
+      end
+    end
     write_hook
   end
 

app/models/project.rb

@@ -17,6 +17,9 @@ class Project < ActiveRecord::Base
   belongs_to :owner, polymorphic: true, counter_cache: :own_projects_count
   belongs_to :maintainer, class_name: 'User'
 
+  belongs_to :alias_from, class_name: 'Project'
+  has_many   :aliases,    class_name: 'Project', foreign_key: 'alias_from_id'
+
   has_many :issues,         dependent: :destroy
   has_many :pull_requests,  dependent: :destroy, foreign_key: 'to_project_id'
   has_many :labels,         dependent: :destroy
@@ -216,13 +219,14 @@ class Project < ActiveRecord::Base
     end
   end
 
-  def fork(new_owner, new_name = name)
+  def fork(new_owner, new_name = name, is_alias = false)
     new_name = new_name.presence || name
     dup.tap do |c|
-      c.name = new_name
+      c.name          = new_name
-      c.parent_id = id
+      c.parent_id     = id
-      c.owner = new_owner
+      c.alias_from_id = alias_from_id || id if is_alias
-      c.updated_at = nil; c.created_at = nil # :id = nil
+      c.owner         = new_owner
+      c.updated_at    = nil; c.created_at = nil # :id = nil
       # Hack to call protected method :)
       c.send :set_maintainer
       c.save

app/views/projects/git/base/_choose_fork.html.haml

@@ -1,13 +0,0 @@
-- is_group = owner.class == Group ? "(#{t 'activerecord.models.group'})" : ''
-- full_name = "#{owner.uname}/#{name} #{is_group}"
-
-- if owner.own_projects.exists? name: name
-  %p.text-center
-    =t 'layout.projects.already_exists'
-    =link_to full_name, project_path("#{owner.uname}/#{name}")#, class: 'center-block'
-- else
-  = form_for @project, url: fork_project_path(@project), html: { class: :form, multipart: true, method: :post } do |f|
-    = hidden_field_tag :group, owner.id if owner.class == Group
-    = hidden_field_tag :fork_name, name, name: 'fork_name'
-    =f.submit t('layout.projects.fork_to', to: full_name), class: 'btn btn-primary center-block',
-              'data-loading-text' => t('layout.processing'), id: 'create_fork'

app/views/projects/git/base/_choose_fork.html.slim

@@ -0,0 +1,22 @@
+- is_group = owner.class == Group ? "(#{t 'activerecord.models.group'})" : ''
+- full_name = "#{owner.uname}/#{name} #{is_group}"
+
+- if owner.own_projects.exists? name: name
+  p.text-center
+    => t('layout.projects.already_exists')
+    = link_to full_name, project_path("#{owner.uname}/#{name}")
+- else
+  = form_for @project, url: fork_project_path(@project), html: { class: :form, multipart: true, method: :post } do |f|
+    = hidden_field_tag :group, owner.id if owner.class == Group
+    = hidden_field_tag :fork_name, name, name: 'fork_name'
+    = hidden_field_tag :alias, '{{create_alias}}'
+    .btn-group.btn-group-justified ng-init='create_alias = false'
+      .btn-group
+        = f.submit t('layout.projects.fork_to', to: full_name),
+          class: 'btn btn-primary center-block',
+          'data-loading-text' => t('layout.processing'), id: 'create_fork'
+      .btn-group
+        = f.submit t('layout.projects.create_alias_for', for: full_name),
+        class: 'btn btn-primary center-block',
+        ng_click: 'create_alias = true',
+        'data-loading-text' => t('layout.processing'), id: 'create_fork'

app/views/projects/git/base/_forks.html.haml

@@ -1,5 +0,0 @@
-=render 'projects/git/base/choose_fork', owner: current_user, name: name
-%hr
-- Group.can_own_project(current_user).each do |group|
-  =render 'projects/git/base/choose_fork', owner: group, name: name
-  %hr

app/views/projects/git/base/_forks.html.slim

@@ -0,0 +1,5 @@
+== render 'projects/git/base/choose_fork', owner: current_user, name: name
+hr
+- Group.can_own_project(current_user).each do |group|
+  == render 'projects/git/base/choose_fork', owner: group, name: name
+  hr

config/locales/models/project.en.yml

@@ -21,6 +21,7 @@ en:
       edit: Settings
       fork_and_edit: Fork
       fork_to: Fork to %{to}
+      create_alias_for: Create alias for %{for}
       fork_modal_header: Where do you want to fork this project?
       already_exists: Project already exists
       unexisted_project: Project not exists

config/locales/models/project.ru.yml

@@ -21,6 +21,7 @@ ru:
       edit: Настройки
       fork_and_edit: Клонировать
       fork_to: Клонировать в %{to}
+      create_alias_for: Создать ссылку для %{for}
       fork_modal_header: Куда Вы хотите клонировать проект?
       already_exists: Проект уже существует
       unexisted_project: Проект не существует

db/migrate/20150112204757_add_alias_from_to_projects.rb

@@ -0,0 +1,6 @@
+class AddAliasFromToProjects < ActiveRecord::Migration
+  def change
+    add_column :projects, :alias_from_id, :integer
+    add_index :projects, :alias_from_id
+  end
+end

db/schema.rb

@@ -11,7 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20141015193923) do
+ActiveRecord::Schema.define(version: 20150112204757) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -173,6 +173,8 @@ ActiveRecord::Schema.define(version: 20141015193923) do
     t.string   "owner_uname",                                 null: false
     t.boolean  "architecture_dependent",   default: false,    null: false
     t.integer  "autostart_status"
+    t.integer  "alias_from_id"
+    t.index ["alias_from_id"], :name => "index_projects_on_alias_from_id"
     t.index ["name", "owner_id", "owner_type"], :name => "index_projects_on_name_and_owner_id_and_owner_type", :unique => true, :case_sensitive => false
   end