The two purposes of Rails Routing

Rails Routing is defined in ./config/route.rb. Routings are actually a list of rules.

Routing has two purposes.

• Recognize URL: What to do when an URL like
  http://localhost:3000/myrecipes/apples
  is coming.


• Generate URL: What to create when Rails command like

  
  link_to :controller=>'recipes', 
          :action=>'show', 
          :ingredient=>'apple'
  

  
  is defined.

map.connect "myrecipes/:ingredient",
            :controller=>"recipes",
            :action=>"show"

The static text is myrecipes.

The wildcard receptor is :ingredient which you can get by
params[:ingredient]