I spent a long time debugging a problem in Rails last night. If I mistype a URL to may rails app (on purpose to test out the error handling) and I put something like: http://frogs/232.abcdef instead of (the correct) http://frog/232,abcdef the abcdef becomes the "template format". i.e. instead of .json or .xml, I am now making a request in the abcdef format. This causes Rails to look for templates with the abcdef format so instead of looking for a template of app/view/errors/frog.html.erb it is looking for /app/view/errors/frog.abcdef.erb BUT, the error message doesn''t tell you this. Instead it just says "can''t find app/view/errors/ frog.erb" The route statement I''m using is just map.resources :frogs This creates routes that look like /frogs/:id(.:format) meaning that the .:format is optional. How do I tell Rails that I don''t want the (.:format) as part of my paths OR how do I tell Rails that the :format string must match a particular set of strings? I tried adding :format => ''html'' to my list of options for that route but that didn''t have any effect. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Core" group. To post to this group, send email to rubyonrails-core@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-core+unsubscribe@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-core?hl=en.