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Contents
module ActiveRemote
module PrimaryKey
extend ActiveSupport::Concern
module ClassMethods
##
# The default_primary_key is used to define what attribute is used
# as a primary key for your global code base. If you use a primary
# key other than this, you'll want to set it using the primary_key
# method listed below
#
def default_primary_key
:guid
end
##
# In the event that you use a different primary key than the default
# primary key listed above (like :uuid, or :id), you'll use this method
# to change that primary key. This will be used when making remote
# calls to persist or refresh data.
#
def primary_key(value = nil)
@primary_key = value if value
@primary_key || default_primary_key
end
end
##
# Instance level access to either the default primary key, or whatever
# you configured the class level primary key to be.
#
def primary_key
self.class.primary_key
end
# Returns an Array of all key attributes if any of the attributes is set, whether or not
# the object is persisted. Returns +nil+ if there are no key attributes.
#
# class Person
# include ActiveModel::Conversion
# attr_accessor :id
#
# def initialize(id)
# @id = id
# end
# end
#
# person = Person.new(1)
# person.to_key # => [1]
def to_key
@__to_key_key = respond_to?(primary_key) && send(primary_key) if @__to_key_key.nil?
@__to_key_key ? [@__to_key_key] : nil
end
end
end
Version data entries
11 entries across 11 versions & 1 rubygems