Contents

# 
# @author Kristian Mandrup
#
# Model configuration of the Join model (fx UsersRoles)
# 
# Knows how to configure the Join model between a subject model (the main target of the behavior fx UserAccount) and the object model (the behavior to be added, fx Role) 
#
module Schemaker
  class JoinModel < BaseModel

    # @param [Schema::Models] each model needs to have access to the collection of models it may need to create relations with
    # @param [Class] reference to the Class it aims to configure!
    def initialize models, clazz
      super
    end

    def simple_key
      clazz_name.to_s.underscore
    end

    def through_key
      make_key clazz_name
    end

    # The join model always belongs to both the object and subject model
    # the subject and object model can then each have a has_many relationship to the join model
    # thus creating a Many-to-Many relationship via the join model
    
    # Example:
    #   UsersRoles
    #     belongs_to :user, :class_name => 'UserAccount' (subject)             
    #     belongs_to :role, :class_name => 'Role' (object)
    #
    # @note Do not call super here! 
    def configure          
      create_belongs_to :subject, class_name_option(:subject)
      create_belongs_to :object, class_name_option(:object)
    end                
  end
end

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
schemaker-0.1.1	lib/schemaker/models/join_model.rb
schemaker-0.1.0	lib/schemaker/models/join_model.rb