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Contents
# encoding: utf-8
module Dynamoid #:nodoc:
# The belongs_to association. For belongs_to, we reference only a single target instead of multiple records; that target is the
# object to which the association object is associated.
module Associations
class BelongsTo
include SingleAssociation
private
# Find the target association, either has_many or has_one. Uses either options[:inverse_of] or the source class name and default parsing to
# return the most likely name for the target association.
#
# @since 0.2.0
def target_association
has_many_key_name = options[:inverse_of] || source.class.to_s.underscore.pluralize.to_sym
has_one_key_name = options[:inverse_of] || source.class.to_s.underscore.to_sym
if !target_class.associations[has_many_key_name].nil?
return has_many_key_name if target_class.associations[has_many_key_name][:type] == :has_many
end
if !target_class.associations[has_one_key_name].nil?
return has_one_key_name if target_class.associations[has_one_key_name][:type] == :has_one
end
end
# Associate a source object to this association.
#
# @since 0.2.0
def associate_target(object)
object.update_attribute(target_attribute, target_ids.merge(Array(source.id)))
end
# Disassociate a source object from this association.
#
# @since 0.2.0
def disassociate_target(object)
source.update_attribute(source_attribute, target_ids - Array(source.id))
end
end
end
end
Version data entries
20 entries across 20 versions & 4 rubygems