diff options
Diffstat (limited to 'actionpack/lib/action_dispatch/routing/inspector.rb')
| -rw-r--r-- | actionpack/lib/action_dispatch/routing/inspector.rb | 224 |
1 files changed, 224 insertions, 0 deletions
diff --git a/actionpack/lib/action_dispatch/routing/inspector.rb b/actionpack/lib/action_dispatch/routing/inspector.rb new file mode 100644 index 0000000000..22336c59b6 --- /dev/null +++ b/actionpack/lib/action_dispatch/routing/inspector.rb @@ -0,0 +1,224 @@ +# frozen_string_literal: true + +require "delegate" + +module ActionDispatch + module Routing + class RouteWrapper < SimpleDelegator + def endpoint + app.dispatcher? ? "#{controller}##{action}" : rack_app.inspect + end + + def constraints + requirements.except(:controller, :action) + end + + def rack_app + app.rack_app + end + + def path + super.spec.to_s + end + + def name + super.to_s + end + + def reqs + @reqs ||= begin + reqs = endpoint + reqs += " #{constraints}" unless constraints.empty? + reqs + end + end + + def controller + parts.include?(:controller) ? ":controller" : requirements[:controller] + end + + def action + parts.include?(:action) ? ":action" : requirements[:action] + end + + def internal? + internal + end + + def engine? + app.engine? + end + end + + ## + # This class is just used for displaying route information when someone + # executes `rails routes` or looks at the RoutingError page. + # People should not use this class. + class RoutesInspector # :nodoc: + def initialize(routes) + @engines = {} + @routes = routes + end + + def format(formatter, filter = nil) + routes_to_display = filter_routes(normalize_filter(filter)) + routes = collect_routes(routes_to_display) + if routes.none? + formatter.no_routes(collect_routes(@routes)) + return formatter.result + end + + formatter.header routes + formatter.section routes + + @engines.each do |name, engine_routes| + formatter.section_title "Routes for #{name}" + formatter.section engine_routes + end + + formatter.result + end + + private + + def normalize_filter(filter) + if filter.is_a?(Hash) && filter[:controller] + { controller: /#{filter[:controller].downcase.sub(/_?controller\z/, '').sub('::', '/')}/ } + elsif filter + { controller: /#{filter}/, action: /#{filter}/, verb: /#{filter}/, name: /#{filter}/, path: /#{filter}/ } + end + end + + def filter_routes(filter) + if filter + @routes.select do |route| + route_wrapper = RouteWrapper.new(route) + filter.any? { |default, value| route_wrapper.send(default) =~ value } + end + else + @routes + end + end + + def collect_routes(routes) + routes.collect do |route| + RouteWrapper.new(route) + end.reject(&:internal?).collect do |route| + collect_engine_routes(route) + + { name: route.name, + verb: route.verb, + path: route.path, + reqs: route.reqs } + end + end + + def collect_engine_routes(route) + name = route.endpoint + return unless route.engine? + return if @engines[name] + + routes = route.rack_app.routes + if routes.is_a?(ActionDispatch::Routing::RouteSet) + @engines[name] = collect_routes(routes.routes) + end + end + end + + class ConsoleFormatter + def initialize + @buffer = [] + end + + def result + @buffer.join("\n") + end + + def section_title(title) + @buffer << "\n#{title}:" + end + + def section(routes) + @buffer << draw_section(routes) + end + + def header(routes) + @buffer << draw_header(routes) + end + + def no_routes(routes) + @buffer << + if routes.none? + <<~MESSAGE + You don't have any routes defined! + + Please add some routes in config/routes.rb. + MESSAGE + else + "No routes were found for this controller" + end + @buffer << "For more information about routes, see the Rails guide: http://guides.rubyonrails.org/routing.html." + end + + private + def draw_section(routes) + header_lengths = ["Prefix", "Verb", "URI Pattern"].map(&:length) + name_width, verb_width, path_width = widths(routes).zip(header_lengths).map(&:max) + + routes.map do |r| + "#{r[:name].rjust(name_width)} #{r[:verb].ljust(verb_width)} #{r[:path].ljust(path_width)} #{r[:reqs]}" + end + end + + def draw_header(routes) + name_width, verb_width, path_width = widths(routes) + + "#{"Prefix".rjust(name_width)} #{"Verb".ljust(verb_width)} #{"URI Pattern".ljust(path_width)} Controller#Action" + end + + def widths(routes) + [routes.map { |r| r[:name].length }.max || 0, + routes.map { |r| r[:verb].length }.max || 0, + routes.map { |r| r[:path].length }.max || 0] + end + end + + class HtmlTableFormatter + def initialize(view) + @view = view + @buffer = [] + end + + def section_title(title) + @buffer << %(<tr><th colspan="4">#{title}</th></tr>) + end + + def section(routes) + @buffer << @view.render(partial: "routes/route", collection: routes) + end + + # The header is part of the HTML page, so we don't construct it here. + def header(routes) + end + + def no_routes(*) + @buffer << <<~MESSAGE + <p>You don't have any routes defined!</p> + <ul> + <li>Please add some routes in <tt>config/routes.rb</tt>.</li> + <li> + For more information about routes, please see the Rails guide + <a href="http://guides.rubyonrails.org/routing.html">Rails Routing from the Outside In</a>. + </li> + </ul> + MESSAGE + end + + def result + @view.raw @view.render(layout: "routes/table") { + @view.raw @buffer.join("\n") + } + end + end + end +end |