ProtectedBranches model, Master permission for repo\n Allow push to protected branch for masters only

app/models/protected_branch.rb

@@ -0,0 +1,29 @@
+class ProtectedBranch < ActiveRecord::Base
+  belongs_to :project
+  validates_presence_of :project_id
+  validates_presence_of :name
+
+  after_save :update_repository
+  after_destroy :update_repository
+
+  def update_repository
+    Gitlabhq::GitHost.system.new.configure do |c|
+      c.update_project(project.path, project)
+    end
+  end
+
+  def commit
+    project.commit(self.name)
+  end
+end
+# == Schema Information
+#
+# Table name: protected_branches
+#
+#  id         :integer         not null, primary key
+#  project_id :integer         not null
+#  name       :string(255)     not null
+#  created_at :datetime        not null
+#  updated_at :datetime        not null
+#
+