Sha256: 0bc2f4a32020865630849c4658bc40952fd9e6196ef89ba84dda5ea236e25047
Contents?: true
Size: 1.79 KB
Versions: 14
Compression:
Stored size: 1.79 KB
Contents
class Module
def mattr_reader(*syms)
receiver = self
options = syms.extract_options!
syms.each do |sym|
raise NameError.new('invalid attribute name') unless sym =~ /^[_A-Za-z]\w*$/
class_exec do
unless class_variable_defined?("@@#{sym}")
class_variable_set("@@#{sym}", nil)
end
define_singleton_method sym do
class_variable_get("@@#{sym}")
end
end
unless options[:instance_reader] == false || options[:instance_accessor] == false
class_exec do
define_method sym do
receiver.class_variable_get("@@#{sym}")
end
end
end
end
end
def mattr_writer(*syms)
receiver = self
options = syms.extract_options!
syms.each do |sym|
raise NameError.new('invalid attribute name') unless sym =~ /^[_A-Za-z]\w*$/
class_exec do
define_singleton_method "#{sym}=" do |obj|
class_variable_set("@@#{sym}", obj)
end
end
unless options[:instance_writer] == false || options[:instance_accessor] == false
class_exec do
define_method "#{sym}=" do |obj|
receiver.class_variable_set("@@#{sym}", obj)
end
end
end
end
end
# Extends the module object with module and instance accessors for class attributes,
# just like the native attr* accessors for instance attributes.
#
# module AppConfiguration
# mattr_accessor :google_api_key
#
# self.google_api_key = "123456789"
# end
#
# AppConfiguration.google_api_key # => "123456789"
# AppConfiguration.google_api_key = "overriding the api key!"
# AppConfiguration.google_api_key # => "overriding the api key!"
def mattr_accessor(*syms)
mattr_reader(*syms)
mattr_writer(*syms)
end
end
Version data entries
14 entries across 14 versions & 2 rubygems