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Contents
module Spree::Preferences
module PreferableClassMethods
def defined_preferences
[]
end
def preference(name, type, options={})
options.assert_valid_keys(:default)
default = options[:default]
default = ->{ options[:default] } unless default.is_a?(Proc)
# The defined preferences on a class are all those defined directly on
# that class as well as those defined on ancestors.
# We store these as a class instance variable on each class which has a
# preference. super() collects preferences defined on ancestors.
singleton_preferences = (@defined_singleton_preferences ||= [])
singleton_preferences << name.to_sym
define_singleton_method :defined_preferences do
super() + singleton_preferences
end
# cache_key will be nil for new objects, then if we check if there
# is a pending preference before going to default
define_method preference_getter_method(name) do
preferences.fetch(name) do
default.call
end
end
define_method preference_setter_method(name) do |value|
value = convert_preference_value(value, type)
preferences[name] = value
# If this is an activerecord object, we need to inform
# ActiveRecord::Dirty that this value has changed, since this is an
# in-place update to the preferences hash.
preferences_will_change! if respond_to?(:preferences_will_change!)
end
define_method preference_default_getter_method(name), &default
define_method preference_type_getter_method(name) do
type
end
end
def preference_getter_method(name)
"preferred_#{name}".to_sym
end
def preference_setter_method(name)
"preferred_#{name}=".to_sym
end
def preference_default_getter_method(name)
"preferred_#{name}_default".to_sym
end
def preference_type_getter_method(name)
"preferred_#{name}_type".to_sym
end
end
end
Version data entries
28 entries across 28 versions & 1 rubygems