Fixes URL generation with trailing_slash: true

URL generation with trailing_slash: true was adding a trailing slash
after .:format

    Routes.draw do
      resources :bars
    end

    bars_url(trailing_slash: true, format: 'json')
      # => /bars.json/

This commit removes that extra trailing slash

1 files changed, 17 insertions, 9 deletions

diff --git a/actionpack/lib/action_dispatch/http/url.rb b/actionpack/lib/action_dispatch/http/url.rb
index 6f5a52c568..ffc9fc7301 100644
--- a/actionpack/lib/action_dispatch/http/url.rb
+++ b/actionpack/lib/action_dispatch/http/url.rb
@@ -34,19 +34,15 @@ module ActionDispatch
           path  = options.delete(:script_name).to_s.chomp("/")
           path << options.delete(:path).to_s
 
+          add_trailing_slash(path) if options[:trailing_slash]
+
           params = options[:params].is_a?(Hash) ? options[:params] : options.slice(:params)
           params.reject! { |_,v| v.to_param.nil? }
 
           result = build_host_url(options)
-          if options[:trailing_slash]
-            if path.include?('?')
-              result << path.sub(/\?/, '/\&')
-            else
-              result << path.sub(/[^\/]\z|\A\z/, '\&/')
-            end
-          else
-            result << path
-          end
+
+          result << path
+
           result << "?#{params.to_query}" unless params.empty?
           result << "##{Journey::Router::Utils.escape_fragment(options[:anchor].to_param.to_s)}" if options[:anchor]
           result
@@ -54,6 +50,18 @@ module ActionDispatch
 
         private
 
+        def add_trailing_slash(path)
+          # includes querysting
+          if path.include?('?')
+            path.sub!(/\?/, '/\&')
+          # does not have a .format
+          elsif !path.include?(".")
+            path.sub!(/[^\/]\z|\A\z/, '\&/')
+          end
+
+          path
+        end
+
         def build_host_url(options)
           if options[:host].blank? && options[:only_path].blank?
             raise ArgumentError, 'Missing host to link to! Please provide the :host parameter, set default_url_options[:host], or set :only_path to true'