Handle perfomance issue with team import. Model specs

app/models/users_project.rb

@@ -22,19 +22,32 @@ class UsersProject < ActiveRecord::Base
 
   class << self
     def import_team(source_project, target_project)
-      UsersProject.transaction do
-        team = source_project.users_projects.all
-
-        team.each do |tm|
-          # Skip if user already present in team
-          next if target_project.users.include?(tm.user)
-
-          new_tm = tm.dup
-          new_tm.id = nil
-          new_tm.project_id = target_project.id
-          new_tm.save
+      UsersProject.without_repository_callback do
+        UsersProject.transaction do
+          team = source_project.users_projects.all
+
+          team.each do |tm|
+            # Skip if user already present in team
+            next if target_project.users.include?(tm.user)
+
+            new_tm = tm.dup
+            new_tm.id = nil
+            new_tm.project_id = target_project.id
+            new_tm.save
+          end
         end
       end
+
+      target_project.update_repository
+      true
+    rescue
+      false
+    end
+
+    def without_repository_callback
+      UsersProject.skip_callback(:destroy, :after, :update_repository)
+      yield
+      UsersProject.set_callback(:destroy, :after, :update_repository)
     end
 
     def bulk_delete(project, user_ids)

spec/models/users_project_spec.rb

@@ -35,4 +35,37 @@ describe UsersProject do
     it { should respond_to(:user_name) }
     it { should respond_to(:user_email) }
   end
+
+  describe :import_team do
+    before do
+      @abilities = Six.new
+      @abilities << Ability
+
+      @project_1 = create :project
+      @project_2 = create :project
+
+      @user_1 = create :user
+      @user_2 = create :user
+
+      @project_1.add_access @user_1, :write
+      @project_2.add_access @user_2, :read
+
+      @status = UsersProject.import_team(@project_1, @project_2)
+    end
+
+    it { @status.should be_true }
+
+    describe 'project 2 should get user 1 as developer. user_2 should not be changed' do
+      it { @project_2.users.should include(@user_1) }
+      it { @project_2.users.should include(@user_2) }
+
+      it { @abilities.allowed?(@user_1, :write_project, @project_2).should be_true }
+      it { @abilities.allowed?(@user_2, :read_project, @project_2).should be_true }
+    end
+
+    describe 'project 1 should not be changed' do
+      it { @project_1.users.should include(@user_1) }
+      it { @project_1.users.should_not include(@user_2) }
+    end
+  end
 end