Implement Generators

lib/active_model/serializer/generators/resource_override.rb

@@ -0,0 +1,13 @@
+require 'rails/generators'
+require 'rails/generators/rails/resource/resource_generator'
+
+module Rails
+  module Generators
+    class ResourceGenerator
+      def add_serializer
+        invoke 'serializer'
+      end
+    end
+  end
+end
+

lib/active_model/serializer/generators/serializer/USAGE

@@ -0,0 +1,9 @@
+Description:
+    Generates a serializer for the given resource with tests.
+
+Example:
+    `rails generate serializer Account name created_at`
+
+    For TestUnit it creates:
+        Serializer:  app/serializers/account_serializer.rb
+        TestUnit:    test/unit/account_serializer_test.rb

lib/active_model/serializer/generators/serializer/serializer_generator.rb

@@ -0,0 +1,37 @@
+module Rails
+  module Generators
+    class SerializerGenerator < NamedBase
+      source_root File.expand_path('../templates', __FILE__)
+      check_class_collision suffix: 'Serializer'
+
+      argument :attributes, type: :array, default: [], banner: 'field:type field:type'
+
+      class_option :parent, type: :string, desc: 'The parent class for the generated serializer'
+
+      def create_serializer_file
+        template 'serializer.rb', File.join('app/serializers', class_path, "#{file_name}_serializer.rb")
+      end
+
+      private
+
+      def attributes_names
+        [:id] + attributes.select { |attr| !attr.reference? }.map { |a| a.name.to_sym }
+      end
+
+      def association_names
+        attributes.select { |attr| attr.reference? }.map { |a| a.name.to_sym }
+      end
+
+      def parent_class_name
+        if options[:parent]
+          options[:parent]
+        elsif (ns = Rails::Generators.namespace) && ns.const_defined?(:ApplicationSerializer) ||
+               defined?(::ApplicationSerializer)
+          'ApplicationSerializer'
+        else
+          'ActiveModel::Serializer'
+        end
+      end
+    end
+  end
+end

lib/active_model/serializer/generators/serializer/templates/serializer.rb

@@ -0,0 +1,8 @@
+<% module_namespacing  do -%>
+class <%= class_name %>Serializer < <%= parent_class_name %>
+  attributes <%= attributes_names.map(&:inspect).join(", ") %>
+<% association_names.each do |attribute| -%>
+  has_one :<%= attribute %>
+<% end -%>
+end
+<% end  -%>

lib/active_model/serializer/railtie.rb

@@ -0,0 +1,10 @@
+module ActiveModel
+  class Railtie < Rails::Railtie
+    initializer 'generators' do |app|
+      require 'rails/generators'
+      require 'active_model/serializer/generators/serializer/serializer_generator'
+      Rails::Generators.configure!(app.config.generators)
+      require 'active_model/serializer/generators/resource_override'
+    end
+  end
+end