Module: JsonSti

Extended by:
ActiveSupport::Concern
Defined in:
lib/json_sti.rb,
lib/json_sti/class_master_list.rb,
lib/json_sti/inheritable_seeder.rb

Defined Under Namespace

Classes: ClassMasterList, InheritableSeeder

Class Method Summary collapse

Class Method Details

.initialize_single_table_arel_helpers ⇒ Object 



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# File 'lib/json_sti.rb', line 12

def self.initialize_single_table_arel_helpers
  JsonSti::ClassMasterList.base_class_list.each do |receiving_class_name|
    receiving_class = receiving_class_name.to_s.camelize.constantize

    next unless ClassMasterList.relations_lookup[receiving_class_name]

    ClassMasterList.relations_lookup[receiving_class_name][:relationships].each do |relationship_to_create|
      ClassMasterList.relations_lookup[relationship_to_create][:members].each do |relationship_to_create_member|
        creation_class = "#{relationship_to_create.to_s.camelize}::#{relationship_to_create_member.to_s.singularize.camelize}".constantize

        ar_association = receiving_class.reflect_on_all_associations.detect do |association|
          association.class_name == relationship_to_create.to_s.camelize
        end

        receiving_class.class_eval do
          if ar_association.to_s.downcase =~ /many/
            # create has_many helper methods for sti subtypes
            define_method "#{relationship_to_create_member.to_s.pluralize}" do
              self.send(relationship_to_create.to_s.pluralize).where(type: creation_class.to_s)
            end

          else
            # create belongs_to helper methods for sti subtypes
            define_method "#{relationship_to_create_member.to_s.singularize}" do
              object = self.send(relationship_to_create.to_s.singularize)
              return object.class.to_s == creation_class.to_s ? object : nil
            end
          end
        end
      end
    end
  end
end