v3: add subscription model

lib/travis/api/v3/features.rb

@@ -0,0 +1,9 @@
+module Travis::API::V3
+  module Features
+    extend self
+
+    def use_subscriptions?
+      Models::Subscription.table_exists?
+    end
+  end
+end

lib/travis/api/v3/github.rb

@@ -1,6 +1,5 @@
 require 'gh'
 
-
 module Travis::API::V3
   class GitHub
     DEFAULT_OPTIONS = {

lib/travis/api/v3/models/organization.rb

@@ -3,5 +3,10 @@ module Travis::API::V3
     has_many :memberships
     has_many :users, through: :memberships
     has_many :repositories, as: :owner
+    has_one  :subscription, as: :owner
+
+    def subscription
+      super if Features.use_subscriptions?
+    end
   end
 end

lib/travis/api/v3/models/subscription.rb

@@ -0,0 +1,4 @@
+module Travis::API::V3
+  class Models::Subscription < Model
+  end
+end

lib/travis/api/v3/models/user.rb

@@ -4,13 +4,18 @@ module Travis::API::V3
     has_many :permissions,   dependent: :destroy
     has_many :emails,        dependent: :destroy
     has_many :tokens,        dependent: :destroy
-    has_many :repositories,  through:   :permissions
     has_many :organizations, through:   :memberships
+    has_many :repositories,  as:        :owner
+    has_one  :subscription,  as:        :owner
 
     serialize :github_oauth_token, Extensions::EncryptedColumn.new(disable: true)
 
     def token
       tokens.first_or_create.token
     end
+
+    def subscription
+      super if Features.use_subscriptions?
+    end
   end
 end

script/console

@@ -15,6 +15,8 @@ class Travis::Console
   end
 end
 
+V3 = Travis::API::V3
+
 Travis::Api::App.setup
 console = Travis::Console.new
 methods = Travis::Console.instance_methods - Object.instance_methods