Sha256: 0f92321e62421506f4f892975043b105c55d164cd59676635fe729e47f242ffb
Contents?: true
Size: 1.89 KB
Versions: 11
Compression:
Stored size: 1.89 KB
Contents
# encoding: utf-8
module Mongoid #:nodoc:
module Associations #:nodoc:
class BelongsToRelated #:nodoc:
include Proxy
# Initializing a related association only requires looking up the object
# by its id.
#
# Options:
#
# document: The +Document+ that contains the relationship.
# options: The association +Options+.
def initialize(document, foreign_key, options, target = nil)
@options = options
@target = target || options.klass.find(foreign_key)
extends(options)
end
class << self
# Instantiate a new +BelongsToRelated+ or return nil if the foreign key is
# nil. It is preferrable to use this method over the traditional call
# to new.
#
# Options:
#
# document: The +Document+ that contains the relationship.
# options: The association +Options+.
def instantiate(document, options, target = nil)
foreign_key = document.send(options.foreign_key)
foreign_key.blank? ? nil : new(document, foreign_key, options, target)
end
# Returns the macro used to create the association.
def macro
:belongs_to_related
end
# Perform an update of the relationship of the parent and child. This
# will assimilate the child +Document+ into the parent's object graph.
#
# Options:
#
# related: The related object
# parent: The parent +Document+ to update.
# options: The association +Options+
#
# Example:
#
# <tt>BelongsToRelated.update(game, person, options)</tt>
def update(target, parent, options)
if target
parent.send("#{options.foreign_key}=", target.id)
return instantiate(parent, options, target)
end
target
end
end
end
end
end
Version data entries
11 entries across 11 versions & 2 rubygems