class LanguageContext < Contexts::Base
  def key
    :lang
  end

  def required?
    false
  end

  def constraints
    /ru|en/
  end

  def default
    I18n.default_locale
  end

  def current
    I18n.locale
  end

  def apply(ctrl, value)
    I18n.locale = value || ctrl.params[key].presence || default
  end
end