init project

app/models/repository.rb

@@ -0,0 +1,12 @@
+class Repository < ApplicationRecord
+  self.inheritance_column = nil # FIX  The single-table inheritance mechanism failed
+  belongs_to :project, :touch => true
+  belongs_to :user
+  has_many :version_releases, dependent: :destroy
+
+  validates :identifier, presence: true
+
+  def to_param
+    self.identifier.parameterize
+  end
+end