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# frozen_string_literal: true
require "active_support/concern"
module Decidim
# A set of convenience methods to deal with I18n attributes and validations
# in a way that's compatible with Virtus and ActiveModel, thus making it easy
# to integrate into Rails' forms and similar workflows.
module TranslatableAttributes
extend ActiveSupport::Concern
class_methods do
# Public: Mirrors Virtus' `attribute` interface to define attributes in
# multiple locales.
#
# name - The attribute's name
# type - The attribute's Type
#
# Example:
#
# translatable_attribute(:name, String)
# # This will generate: `name_ca`, `name_en`, `name_ca=`, `name_en=`
# # and will keep them synchronized with a hash in `name`:
# # name = { "ca" => "Hola", "en" => "Hello" }
#
# Returns nothing.
def translatable_attribute(name, type, *options)
attribute name, Hash, default: {}
locales.each do |locale|
attribute_name = "#{name}_#{locale}".gsub("-", "__")
attribute attribute_name, type, *options
define_method attribute_name do
translatable_attribute_getter(name, locale)
end
alias_method "#{attribute_name}_virtus=", "#{attribute_name}="
define_method "#{attribute_name}=" do |value|
new_value = send("#{attribute_name}_virtus=", value)
translatable_attribute_setter(name, locale, new_value)
end
end
end
def locales
Decidim.available_locales
end
end
private
def translatable_attribute_setter(name, locale, value)
public_send("#{name}=", (public_send(name) || {}).merge(locale => value))
end
def translatable_attribute_getter(name, locale)
field = public_send(name) || {}
corrected_locale = locale.to_s.gsub("__", "-")
field[corrected_locale] || field[corrected_locale.to_sym]
end
end
end
Version data entries
35 entries across 35 versions & 2 rubygems