module ActionController # Write URLs from arbitrary places in your codebase, such as your mailers. # # Example: # # class MyMailer # include ActionController::UrlWriter # default_url_options[:host] = 'www.basecamphq.com' # # def signup_url(token) # url_for(:controller => 'signup', action => 'index', :token => token) # end # end # # In addition to providing +url_for+, named routes are also accessible after # including UrlWriter. # module UrlWriter # The default options for urls written by this writer. Typically a :host pair # is provided. mattr_accessor :default_url_options self.default_url_options = {} def self.included(base) #:nodoc: ActionController::Routing::Routes.named_routes.install base base.mattr_accessor :default_url_options base.default_url_options ||= default_url_options end # Generate a url with the provided options. The following special options may # effect the constructed url: # # * :host Specifies the host the link should be targetted at. This option # must be provided either explicitly, or via default_url_options. # * :protocol The protocol to connect to. Defaults to 'http' # * :port Optionally specify the port to connect to. # def url_for(options) options = self.class.default_url_options.merge(options) url = '' unless options.delete :only_path url << (options.delete(:protocol) || 'http') url << '://' raise "Missing host to link to! Please provide :host parameter or set default_url_options[:host]" unless options[:host] url << options.delete(:host) url << ":#{options.delete(:port)}" if options.key?(:port) else # Delete the unused options to prevent their appearance in the query string [:protocol, :host, :port].each { |k| options.delete k } end url << Routing::Routes.generate(options, {}) return url end end # Rewrites URLs for Base.redirect_to and Base.url_for in the controller. class UrlRewriter #:nodoc: RESERVED_OPTIONS = [:anchor, :params, :only_path, :host, :protocol, :trailing_slash, :skip_relative_url_root] def initialize(request, parameters) @request, @parameters = request, parameters end def rewrite(options = {}) rewrite_url(rewrite_path(options), options) end def to_str "#{@request.protocol}, #{@request.host_with_port}, #{@request.path}, #{@parameters[:controller]}, #{@parameters[:action]}, #{@request.parameters.inspect}" end alias_method :to_s, :to_str private def rewrite_url(path, options) rewritten_url = "" unless options[:only_path] rewritten_url << (options[:protocol] || @request.protocol) rewritten_url << (options[:host] || @request.host_with_port) end rewritten_url << @request.relative_url_root.to_s unless options[:skip_relative_url_root] rewritten_url << path rewritten_url << '/' if options[:trailing_slash] rewritten_url << "##{options[:anchor]}" if options[:anchor] rewritten_url end def rewrite_path(options) options = options.symbolize_keys options.update(options[:params].symbolize_keys) if options[:params] if (overwrite = options.delete(:overwrite_params)) options.update(@parameters.symbolize_keys) options.update(overwrite) end RESERVED_OPTIONS.each {|k| options.delete k} # Generates the query string, too Routing::Routes.generate(options, @request.symbolized_path_parameters) end end end