Rails::Railtie
# File lib/active_support/i18n_railtie.rb, line 66 def self.include_fallbacks_module I18n.backend.class.send(:include, I18n::Backend::Fallbacks) end
# File lib/active_support/i18n_railtie.rb, line 70 def self.init_fallbacks(fallbacks) include_fallbacks_module args = case fallbacks when ActiveSupport::OrderedOptions [*(fallbacks[:defaults] || []) << fallbacks[:map]].compact when Hash, Array Array.wrap(fallbacks) else # TrueClass [] end I18n.fallbacks = I18n::Locale::Fallbacks.new(*args) end
Setup i18n configuration
# File lib/active_support/i18n_railtie.rb, line 42 def self.initialize_i18n(app) return if @i18n_inited fallbacks = app.config.i18n.delete(:fallbacks) app.config.i18n.each do |setting, value| case setting when :railties_load_path app.config.i18n.load_path.unshift(*value) when :load_path I18n.load_path += value else I18n.send("#{setting}=", value) end end init_fallbacks(fallbacks) if fallbacks && validate_fallbacks(fallbacks) reloader.paths.concat I18n.load_path reloader.execute_if_updated @i18n_inited = true end
# File lib/active_support/i18n_railtie.rb, line 85 def self.validate_fallbacks(fallbacks) case fallbacks when ActiveSupport::OrderedOptions !fallbacks.empty? when TrueClass, Array, Hash true else raise "Unexpected fallback type #{fallbacks.inspect}" end end
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