Named resources with name prefixes

March 14th, 2007

Rails allows you to define routes with named prefixes. I expected Rails to somehow know that I wanted my prefix to separate the rest of the name with an underscore.

Here was my original routes: Then, when I tried to use my route, I was getting a NoMethodError:

After a bit of sleuthing (and adding messages to ActionController::Routing::RouteSet#add_named_route), I found out that I was supposed to put the underscore myself on the prefix, like this:

It was also interesting to see all those generated routes. I discovered that the route with a format was named formatted_whatever.

Here’s a diff against the 1.2 branch of Rails that allows you to see all the generated routes as they are read: For reference, here are all the generated routes for this declaration: 
layouts => "/admin/layouts" 
formatted_layouts => "/admin/layouts.:format" 
new_layout => "/admin/layouts/new" 
formatted_new_layout => "/admin/layouts/new.:format" 
edit_layout => "/admin/layouts/:id;edit" 
formatted_edit_layout => "/admin/layouts/:id.:format;edit" 
layout => "/admin/layouts/:id" 
formatted_layout => "/admin/layouts/:id.:format"

EDIT* (2007-03-14 16:52 EDT): Changed link to routing.rb file to the Rails Trac Browser.

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I am François Beausoleil, a Ruby on Rails coder. During the day, I work on XLsuite. At night, I am interested many things. Read my biography

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