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module Rails
class Application
##
# This class is just used for displaying route information when someone
# executes `rake routes`. People should not use this class.
class RouteInspector # :nodoc:
def initialize
@engines = ActiveSupport::OrderedHash.new
end
def format all_routes, filter = nil
if filter
all_routes = all_routes.select{ |route| route.defaults[:controller] == filter }
end
routes = collect_routes(all_routes)
formatted_routes(routes) +
formatted_routes_for_engines
end
def collect_routes(routes)
routes = routes.collect do |route|
route_reqs = route.requirements
rack_app = discover_rack_app(route.app)
controller = route_reqs[:controller] || ':controller'
action = route_reqs[:action] || ':action'
endpoint = rack_app ? rack_app.inspect : "#{controller}##{action}"
constraints = route_reqs.except(:controller, :action)
reqs = endpoint
reqs += " #{constraints.inspect}" unless constraints.empty?
verb = route.verb.source.gsub(/[$^]/, '')
collect_engine_routes(reqs, rack_app)
{:name => route.name.to_s, :verb => verb, :path => route.path.spec.to_s, :reqs => reqs }
end
# Skip the route if it's internal info route
routes.reject { |r| r[:path] =~ %r{/rails/info/properties|^#{Rails.application.config.assets.prefix}} }
end
def collect_engine_routes(name, rack_app)
return unless rack_app && rack_app.respond_to?(:routes)
return if @engines[name]
routes = rack_app.routes
if routes.is_a?(ActionDispatch::Routing::RouteSet)
@engines[name] = collect_routes(routes.routes)
end
end
def formatted_routes_for_engines
@engines.map do |name, routes|
["\nRoutes for #{name}:"] + formatted_routes(routes)
end.flatten
end
def formatted_routes(routes)
name_width = routes.map{ |r| r[:name].length }.max
verb_width = routes.map{ |r| r[:verb].length }.max
path_width = routes.map{ |r| r[:path].length }.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 discover_rack_app(app)
class_name = app.class.name.to_s
if class_name == "ActionDispatch::Routing::Mapper::Constraints"
discover_rack_app(app.app)
elsif class_name !~ /^ActionDispatch::Routing/
app
end
end
end
end
end
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