Ruby on Rails Route not found with button_to, but not with link_to

Question

I have a problem with routing in my app, but i do not understand why. I hope someone can explain me why this is so.

thank you very much for help.

<%= link_to 'Show', restaurant_path(restaurant), :id => 'button_show_restaurant', :class => 'btn btn-success' %> 

<%= button_to 'Show', restaurant_path(restaurant), :id => 'button_show_restaurant', :class => 'btn btn-success' %>

The link_to code routes correctly to the needed restaurant, but the button_to produces the following:

No route matches [POST] "/de/restaurants/526fe01e65617271ea000000" Trace: actionpack (4.0.0) lib/action_dispatch/middleware/debug_exceptions.rb:21:in call' actionpack (4.0.0) lib/action_dispatch/middleware/show_exceptions.rb:30:incall' railties (4.0.0) lib/rails/rack/logger.rb:38:in call_app' railties (4.0.0) lib/rails/rack/logger.rb:21:inblock in call' activesupport (4.0.0) lib/active_support/tagged_logging.rb:67:in block in tagged' activesupport (4.0.0) lib/active_support/tagged_logging.rb:25:intagged' activesupport (4.0.0) lib/active_support/tagged_logging.rb:67:in tagged' railties (4.0.0) lib/rails/rack/logger.rb:21:incall' actionpack (4.0.0) lib/action_dispatch/middleware/request_id.rb:21:in call' rack (1.5.2) lib/rack/methodoverride.rb:21:incall' rack (1.5.2) lib/rack/runtime.rb:17:in call' activesupport (4.0.0) lib/active_support/cache/strategy/local_cache.rb:83:incall' rack (1.5.2) lib/rack/lock.rb:17:in call' actionpack (4.0.0) lib/action_dispatch/middleware/static.rb:64:incall' railties (4.0.0) lib/rails/engine.rb:511:in call' railties (4.0.0) lib/rails/application.rb:97:incall' passenger (4.0.21) lib/phusion_passenger/rack/thread_handler_extension.rb:77:in process_request' passenger (4.0.21) lib/phusion_passenger/request_handler/thread_handler.rb:140:inaccept_and_process_next_request' passenger (4.0.21) lib/phusion_passenger/request_handler/thread_handler.rb:108:in main_loop' passenger (4.0.21) lib/phusion_passenger/request_handler.rb:441:inblock (3 levels) in start_threads'

Routes

Routes match in priority from top to bottom

Helper HTTP Verb Path Controller#Action Path / Url
welcome_index_path GET (/:locale)/welcome(.:format) welcome#index POST (/:locale)/welcome(.:format) welcome#create new_welcome_path GET (/:locale)/welcome/new(.:format) welcome#new edit_welcome_path GET (/:locale)/welcome/:id/edit(.:format) welcome#edit welcome_path GET (/:locale)/welcome/:id(.:format) welcome#show PATCH (/:locale)/welcome/:id(.:format) welcome#update PUT (/:locale)/welcome/:id(.:format) welcome#update DELETE (/:locale)/welcome/:id(.:format) welcome#destroy restaurants_path GET (/:locale)/restaurants(.:format) restaurants#index POST (/:locale)/restaurants(.:format) restaurants#create new_restaurant_path GET (/:locale)/restaurants/new(.:format) restaurants#new edit_restaurant_path GET (/:locale)/restaurants/:id/edit(.:format) restaurants#edit restaurant_path GET (/:locale)/restaurants/:id(.:format) restaurants#show PATCH (/:locale)/restaurants/:id(.:format) restaurants#update PUT (/:locale)/restaurants/:id(.:format) restaurants#update DELETE (/:locale)/restaurants/:id(.:format) restaurants#destroy root_path GET / welcome#index

Answer 1

By default, button_to does a post while link_to does a get. So you want this

<%= button_to 'Show', restaurant_path(restaurant), :id => 'button_show_restaurant', :class => 'btn btn-success', :method => :get %>