def self.generate_helpers!(routes=nil)
routes ||= begin
mappings = Devise.mappings.values.map(&:used_helpers).flatten.uniq
Devise::URL_HELPERS.slice(*mappings)
end
routes.each do |module_name, actions|
[:path, :url].each do |path_or_url|
actions.each do |action|
action = action ? "#{action}_" : ""
method = "#{action}#{module_name}_#{path_or_url}"
class_eval "def \#{method}(resource_or_scope, *args)\nscope = Devise::Mapping.find_scope!(resource_or_scope)\nsend(\"\#{action}\\\#{scope}_\#{module_name}_\#{path_or_url}\", *args)\nend\n", __FILE__, __LINE__ + 1
end
end
end
end