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Contents
# frozen_string_literal: true
module Spotlight
# Mixin for adding translatable ActiveRecord accessors
module Translatables
extend ActiveSupport::Concern
class_methods do
def translates(*attr_names)
attr_names.map(&:to_sym)
attr_names.map(&method(:define_translated_attr_reader))
end
##
# Set up a reader for the specified attribute that uses the I18n backend,
# and defaults to the ActiveRecord value
def define_translated_attr_reader(attr_name)
# Define a dynamic method for translating database-backed attributes,
# falling back to the database information as needed.
#
# Note: the empty string is provided as the final fallback to avoid i18n blowing
# up on nil attributes.
define_method(:"#{attr_name}") do
send("translated_#{attr_name}", default: [attr_translation(attr_name), ''])
end
# Define an accessor that gets the value of the attribute in a given locale,
# returning `nil` for untranslated values.
#
# Note: For the default locale, we actually want to dig into the database,
# because that is the source of truth for the data.
define_method(:"translated_#{attr_name}") do |default: [], **options|
default = Array.wrap(default)
default.prepend(attr_translation(attr_name)) if I18n.locale == I18n.default_locale
I18n.t(attr_name, scope: slug, default: default, **options).presence
end
end
end
private
##
# Will return the default ActiveRecord value for the value
def attr_translation(attr_name)
self[attr_name]
end
end
end
Version data entries
17 entries across 17 versions & 1 rubygems