Can I bind a parameter after an underscore in a rails 2.3 route?

In order to maintain backward compatibility, we need to map /sitemap_1234000.xml to the sitemap controller with 1234000 passed as an ID. 开发者_运维百科I tried

map.connect '/sitemap_:id.xml', :controller => 'sitemap',
                            :action => 'show'

but then when I do

assert_routing '/sitemap_1234000.xml', :controller => 'sitemap', 
                                       :action => 'show',
                                       :id => "1234000"

I get told that no route exists for '/sitemap_1234000.xml'. Can I bind a parameter after an underscore in a rails 2.3 route?

You can use wildcards:

map.connect '/sitemap_(*id).xml, :controller=>'sitemap', :action=>'show'

Then params[:id] should give you what you want.

Not tested - let me know if this works

After some digging around inside rails, this is what I came up with:

config/initializers/bound_parameter_after_underscore.rb

module ActionController
  module Routing
    class RouteBuilder
      def initialize_with_bound_parameter_after_underscore
        initialize_without_bound_parameter_after_underscore
        @nonseparator_regexp = /\A([^#{Regexp.escape(separators.join)}:\*]+)/
      end

      alias_method_chain :initialize, :bound_parameter_after_underscore
    end
  end
end

That stops colon and asterisk from appearing in static segments. Previously the regex which looks for static segments was consuming all of sitemap_:id; now it consumes sitemap_ and leaves :id which is then recognised as you would hope.