Merge branch 'Undev-state-machine-stage-2'

app/controllers/merge_requests_controller.rb

@@ -75,7 +75,7 @@ class MergeRequestsController < ProjectResourceController
     if @merge_request.unchecked?
       @merge_request.check_if_can_be_merged
     end
-    render json: {merge_status: @merge_request.human_merge_status}
+    render json: {merge_status: @merge_request.merge_status_name}
   rescue Gitlab::SatelliteNotExistError
     render json: {merge_status: :no_satellite}
   end

app/models/merge_request.rb

@@ -24,6 +24,8 @@ require Rails.root.join("lib/static_model")
 class MergeRequest < ActiveRecord::Base
   include Issuable
 
+  BROKEN_DIFF = "--broken-diff"
+
   attr_accessible :title, :assignee_id, :target_branch, :source_branch, :milestone_id,
                   :author_id_of_changes, :state_event
 
@@ -51,11 +53,25 @@ class MergeRequest < ActiveRecord::Base
     state :merged
   end
 
-  BROKEN_DIFF = "--broken-diff"
+  state_machine :merge_status, initial: :unchecked do
+    event :mark_as_unchecked do
+      transition [:can_be_merged, :cannot_be_merged] => :unchecked
+    end
+
+    event :mark_as_mergeable do
+      transition unchecked: :can_be_merged
+    end
+
+    event :mark_as_unmergeable do
+      transition unchecked: :cannot_be_merged
+    end
+
+    state :unchecked
 
-  UNCHECKED = 1
-  CAN_BE_MERGED = 2
-  CANNOT_BE_MERGED = 3
+    state :can_be_merged
+
+    state :cannot_be_merged
+  end
 
   serialize :st_commits
   serialize :st_diffs
@@ -65,38 +81,14 @@ class MergeRequest < ActiveRecord::Base
   validate  :validate_branches
 
   scope :merged, -> { with_state(:merged) }
+  scope :by_branch, ->(branch_name) { where("source_branch LIKE :branch OR target_branch LIKE :branch", branch: branch_name) }
+  scope :cared, ->(user) { where('assignee_id = :user OR author_id = :user', user: user.id) }
+  scope :by_milestone, ->(milestone) { where(milestone_id: milestone) }
 
   # Closed scope for merge request should return
   # both merged and closed mr's
   scope :closed, -> { with_states(:closed, :merged) }
 
-  class << self
-    def find_all_by_branch(branch_name)
-      where("source_branch LIKE :branch OR target_branch LIKE :branch", branch: branch_name)
-    end
-
-    def cared(user)
-      where('assignee_id = :user OR author_id = :user', user: user.id)
-    end
-
-    def find_all_by_branch(branch_name)
-      where("source_branch LIKE :branch OR target_branch LIKE :branch", branch: branch_name)
-    end
-
-    def find_all_by_milestone(milestone)
-      where("milestone_id = :milestone_id", milestone_id: milestone)
-    end
-  end
-
-  def human_merge_status
-    merge_statuses = {
-      CAN_BE_MERGED =>  "can_be_merged",
-      CANNOT_BE_MERGED => "cannot_be_merged",
-      UNCHECKED => "unchecked"
-    }
-    merge_statuses[self.merge_status]
-  end
-
   def validate_branches
     if target_branch == source_branch
       errors.add :base, "You can not use same branch for source and target branches"
@@ -108,26 +100,12 @@ class MergeRequest < ActiveRecord::Base
     self.reloaded_diffs
   end
 
-  def unchecked?
-    merge_status == UNCHECKED
-  end
-
-  def mark_as_unchecked
-    self.merge_status = UNCHECKED
-    self.save
-  end
-
-  def can_be_merged?
-    merge_status == CAN_BE_MERGED
-  end
-
   def check_if_can_be_merged
-    self.merge_status = if Gitlab::Satellite::MergeAction.new(self.author, self).can_be_merged?
-                   CAN_BE_MERGED
+    if Gitlab::Satellite::MergeAction.new(self.author, self).can_be_merged?
+      mark_as_mergeable
     else
-                   CANNOT_BE_MERGED
+      mark_as_unmergeable
     end
-    self.save
   end
 
   def diffs
@@ -182,11 +160,6 @@ class MergeRequest < ActiveRecord::Base
       commits.any? && opened?
   end
 
-  def mark_as_unmergable
-    self.merge_status = CANNOT_BE_MERGED
-    self.save
-  end
-
   def reloaded_commits
     if opened? && unmerged_commits.any?
       self.st_commits = unmerged_commits
@@ -221,7 +194,7 @@ class MergeRequest < ActiveRecord::Base
       true
     end
   rescue
-    self.mark_as_unmergable
+    mark_as_unmergeable
     false
   end
 

app/models/project.rb

@@ -321,7 +321,7 @@ class Project < ActiveRecord::Base
     c_ids = self.repository.commits_between(oldrev, newrev).map(&:id)
 
     # Update code for merge requests
-    mrs = self.merge_requests.opened.find_all_by_branch(branch_name).all
+    mrs = self.merge_requests.opened.by_branch(branch_name).all
     mrs.each { |merge_request| merge_request.reload_code; merge_request.mark_as_unchecked }
 
     # Close merge requests

app/views/merge_requests/_show.html.haml

@@ -29,10 +29,10 @@
   $(function(){
     merge_request = new MergeRequest({
       url_to_automerge_check: "#{automerge_check_project_merge_request_path(@project, @merge_request)}",
-      check_enable: #{@merge_request.merge_status == MergeRequest::UNCHECKED ? "true" : "false"},
+      check_enable: #{@merge_request.unchecked? ? "true" : "false"},
       url_to_ci_check: "#{ci_status_project_merge_request_path(@project, @merge_request)}",
       ci_enable: #{@project.gitlab_ci? ? "true" : "false"},
-      current_status: "#{@merge_request.human_merge_status}",
+      current_status: "#{@merge_request.merge_status_name}",
       action: "#{controller.action_name}"
     });
   });

db/migrate/20130220124204_add_new_merge_status_to_merge_request.rb

+class AddNewMergeStatusToMergeRequest < ActiveRecord::Migration
+  def change
+    add_column :merge_requests, :new_merge_status, :string
+  end
+end

db/migrate/20130220125544_convert_merge_status_in_merge_request.rb

+class ConvertMergeStatusInMergeRequest < ActiveRecord::Migration
+  def up
+    MergeRequest.transaction do
+      MergeRequest.where(merge_status: 1).update_all("new_merge_status = 'unchecked'")
+      MergeRequest.where(merge_status: 2).update_all("new_merge_status = 'can_be_merged'")
+      MergeRequest.where(merge_status: 3).update_all("new_merge_status = 'cannot_be_merged'")
+    end
+  end
+
+  def down
+    MergeRequest.transaction do
+      MergeRequest.where(new_merge_status: :unchecked).update_all("merge_status = 1")
+      MergeRequest.where(new_merge_status: :can_be_merged).update_all("merge_status = 2")
+      MergeRequest.where(new_merge_status: :cannot_be_merged).update_all("merge_status = 3")
+    end
+  end
+end

db/migrate/20130220125545_remove_merge_status_from_merge_request.rb

+class RemoveMergeStatusFromMergeRequest < ActiveRecord::Migration
+  def up
+    remove_column :merge_requests, :merge_status
+  end
+
+  def down
+    add_column :merge_requests, :merge_status, :integer
+  end
+end

db/migrate/20130220133245_rename_new_merge_status_to_merge_status_in_milestone.rb

+class RenameNewMergeStatusToMergeStatusInMilestone < ActiveRecord::Migration
+  def change
+    rename_column :merge_requests, :new_merge_status, :merge_status
+  end
+end

db/schema.rb

@@ -11,7 +11,7 @@
 #
 # It's strongly recommended to check this file into your version control system.
 
-ActiveRecord::Schema.define(:version => 20130218141554) do
+ActiveRecord::Schema.define(:version => 20130220133245) do
 
   create_table "events", :force => true do |t|
     t.string   "target_type"
@@ -78,9 +78,9 @@ ActiveRecord::Schema.define(:version => 20130218141554) do
     t.datetime "updated_at",                          :null => false
     t.text     "st_commits",    :limit => 2147483647
     t.text     "st_diffs",      :limit => 2147483647
-    t.integer  "merge_status",                        :default => 1, :null => false
     t.integer  "milestone_id"
     t.string   "state"
+    t.string   "merge_status"
   end
 
   add_index "merge_requests", ["assignee_id"], :name => "index_merge_requests_on_assignee_id"

spec/models/merge_request_spec.rb

@@ -32,6 +32,12 @@ describe MergeRequest do
     it { should_not allow_mass_assignment_of(:project_id) }
   end
 
+  describe "Respond to" do
+    it { should respond_to(:unchecked?) }
+    it { should respond_to(:can_be_merged?) }
+    it { should respond_to(:cannot_be_merged?) }
+  end
+ 
   describe 'modules' do
     it { should include_module(Issuable) }
   end