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require 'delegate'
module ActionDispatch
module Routing
class RouteWrapper < SimpleDelegator
def endpoint
rack_app ? rack_app.inspect : "#{controller}##{action}"
end
def constraints
requirements.except(:controller, :action)
end
def rack_app(app = self.app)
@rack_app ||= begin
class_name = app.class.name.to_s
if class_name == "ActionDispatch::Routing::Mapper::Constraints"
rack_app(app.app)
elsif ActionDispatch::Routing::Redirect === app || class_name !~ /^ActionDispatch::Routing/
app
end
end
end
def verb
super.source.gsub(/[$^]/, '')
end
def path
super.spec.to_s
end
def name
super.to_s
end
def regexp
__getobj__.path.to_regexp
end
def json_regexp
str = regexp.inspect.
sub('\\A' , '^').
sub('\\Z' , '$').
sub('\\z' , '$').
sub(/^\// , '').
sub(/\/[a-z]*$/ , '').
gsub(/\(\?#.+\)/ , '').
gsub(/\(\?-\w+:/ , '(').
gsub(/\s/ , '')
Regexp.new(str).source
end
def reqs
@reqs ||= begin
reqs = endpoint
reqs += " #{constraints.to_s}" unless constraints.empty?
reqs
end
end
def controller
requirements[:controller] || ':controller'
end
def action
requirements[:action] || ':action'
end
def internal?
controller =~ %r{\Arails/(info|welcome)} || path =~ %r{\A#{Rails.application.config.assets.prefix}}
end
def engine?
rack_app && rack_app.respond_to?(:routes)
end
end
##
# This class is just used for displaying route information when someone
# executes `rake 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(filter)
routes = collect_routes(routes_to_display)
if routes.none?
formatter.no_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 filter_routes(filter)
if filter
@routes.select { |route| route.defaults[:controller] == filter }
else
@routes
end
end
def collect_routes(routes)
routes.collect do |route|
RouteWrapper.new(route)
end.reject do |route|
route.internal?
end.collect do |route|
collect_engine_routes(route)
{ name: route.name,
verb: route.verb,
path: route.path,
reqs: route.reqs,
regexp: route.json_regexp }
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
@buffer << <<-MESSAGE
You don't have any routes defined!
Please add some routes in config/routes.rb.
For more information about routes, see the Rails Guide: http://guides.rubyonrails.org/routing.html .
MESSAGE
end
private
def draw_section(routes)
name_width, verb_width, path_width = widths(routes)
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,
routes.map { |r| r[:verb].length }.max,
routes.map { |r| r[:path].length }.max]
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
def no_routes
@buffer << <<-MESSAGE
<p>You don't have any routes defined!</p>
<ul>
<li>Please add some routes in config/routes.rb.</li>
<li>For more information about routes, please <a href="http://guides.rubyonrails.org/routing.html">see the Rails Guide</a>.</li>
</ul>
MESSAGE
end
def result
@view.raw @view.render(layout: "routes/table") {
@view.raw @buffer.join("\n")
}
end
end
end
end
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