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Contents
module Superstore
module BelongsTo
extend ActiveSupport::Concern
included do
class_attribute :belongs_to_reflections
self.belongs_to_reflections = {}
end
module ClassMethods
# === Options
# [:class_name]
# Use if the class cannot be inferred from the association
# [:polymorphic]
# Specify if the association is polymorphic
# Example:
# class Driver < Superstore::Base
# end
# class Truck < Superstore::Base
# end
def belongs_to(name, options = {})
Superstore::BelongsTo::Builder.build(self, name, options)
end
def generated_belongs_to_methods
@generated_belongs_to_methods ||= begin
mod = const_set(:GeneratedBelongsToMethods, Module.new)
include mod
mod
end
end
end
# Returns the belongs_to instance for the given name, instantiating it if it doesn't already exist
def belongs_to_association(name)
association = belongs_to_instance_get(name)
if association.nil?
association = Superstore::BelongsTo::Association.new(self, belongs_to_reflections[name])
belongs_to_instance_set(name, association)
end
association
end
private
def clear_belongs_to_cache
belongs_to_cache.clear if persisted?
end
def belongs_to_cache
@belongs_to_cache ||= {}
end
def belongs_to_instance_get(name)
belongs_to_cache[name.to_sym]
end
def belongs_to_instance_set(name, association)
belongs_to_cache[name.to_sym] = association
end
end
end
Version data entries
18 entries across 18 versions & 1 rubygems