Hi everyone,
I am adding a new action(again) in exiting scaffold generated controller(logins). there is router problem.
Couldn't find Login with ID=again
i have rails 2.3.8 ruby 1.8.6
what code will i add in my route.rb and where???
please help me.
thanks in advance
you have to post your routes.rb file.
here in the forum
thanks for write back,
i am mailing my route.erb file.
ActionController::Routing::Routes.draw do |map|
map.resources :logins
map.resources :logins
map.resources :logins
map.resources :logins
map.resources :signups
map.resources :signups
map.resources :signups
map.resources :signups
map.resources :signups
map.resources :signups
map.resources :signups
map.resources :signups
map.resources :logins
map.resources :signups
map.resources :signups
map.resources :signups
map.resources :orders
map.resources :stories
map.resources :stories
# The priority is based upon order of creation: first created -> highest priority.
# Sample of regular route: # map.connect 'products/:id', :controller => 'catalog', :action => 'view' # Keep in mind you can assign values other than :controller and :action
# Sample of named route: # map.purchase 'products/:id/purchase', :controller => 'catalog', :action => 'purchase' # This route can be invoked with purchase_url(:id => product.id)
# Sample resource route (maps HTTP verbs to controller actions automatically): # map.resources :products
# Sample resource route with options: # map.resources :products, :member => { :short => :get, :toggle => :post }, :collection => { :sold => :get }
# Sample resource route with sub-resources: # map.resources :products, :has_many => [ :comments, :sales ], :has_one => :seller
# Sample resource route with more complex sub-resources # map.resources :products do |products| # products.resources :comments # products.resources :sales, :collection => { :recent => :get } # end
# Sample resource route within a namespace: # map.namespace :admin do |admin| # # Directs /admin/products/* to Admin::ProductsController (app/controllers/admin/products_controller.rb) # admin.resources :products # end
# You can have the root of your site routed with map.root -- just remember to delete public/index.html. # map.root :controller => "welcome"
# See how all your routes lay out with "rake routes"
# Install the default routes as the lowest priority. # Note: These default routes make all actions in every controller accessible via GET requests. You should # consider removing or commenting them out if you're using named routes and resources. map.connect ':controller/:action/:id' map.connect ':controller/:action/:id.:format' end
routes.rb (2.35 KB)
I see, you are confused, adding resources does not create a new action, i creates 7 default actions, which are
index, show , new , create , edit , update and destroy, these are called restful action because they obey the REST (Resource State Transfer )design in which wach of this actions is aided by the http header to tell the server in what state the resourse will be access. Look, here i ordered : http method, url , what it maps to, and the rails helper.
Get => “/users” => “users#index” helper => users_path
this tells the server that the http method is get , and you want to trigger the index action of the users controller, which will bring back a collection that is why you dont specify an id, on the other hand, rails create a helper method, you can use in you app.
Get => “/users/:id” => “users#show” helper => user_path(:id)
this tells the server that the method is get, you want to trigger the show action of the users controller and in this case you want a single element, that is why you need to specify an id, so the server know what element you want, note that the helper method that rails create is singular.
now look at the ones that change the state of the resource.
Put => “/users/:id” => “users#update”
Post=>“/users” => “users#create”
ok, as you can see the urls are the sames as index and show, but in this case they are mapped to different actions, the difference is made by the http method, that is how the server know what action to trigger. Since almost every application users the common index, show , new , create , edit , update and destroy, rails has a method that creates all of them on one pass: resources. Passing map.resources :users create this
users GET /users(.:format) {:action=>“index”, :controller=>“users”}
user GET /users/:id(.:format) {:action=>“show”, :controller=>“users”}
edit_user GET /users/:id(.:format) {:action=>“edit”, :controller=>“users”}
new_user GET /users(.:format) {:action=>“new”, :controller=>“users”}
users POST /users(.:format) {:action=>“create”, :controller=>“users”}
user PUT /users/:id(.:format) {:action=>“update”, :controller=>“users”}
DELETE /users/:id(.:format) {:action=>“destroy”, :controller=>“users”}
So instead of having to speficy all that for every resource( which sometimes is a table in your db ) you just pass
map.resources :users
and rails will create the whole bunch.
In your file you are passing login to resource, and create this
logins GET /logins(.:format) {:action=>“index”, :controller=>“logins”}
POST /logins(.:format) {:action=>“create”, :controller=>“logins”}
new_login GET /logins/new(.:format) {:action=>“new”, :controller=>“logins”}
edit_login GET /logins/:id/edit(.:format) {:action=>“edit”, :controller=>“logins”}
login GET /logins/:id(.:format) {:action=>“show”, :controller=>“logins”}
PUT /logins/:id(.:format) {:action=>“update”, :controller=>“logins”}
DELETE /logins/:id(.:format) {:action=>“destroy”, :controller=>“logins”}
im sure that is not quite what you thought you were doing, because you did it 5 times, rails goes by each and override each and at the end will only show you the result of the last one, but you are only overriding the some thing over and over again, you have never added a new action after the first one.
You really only have this
map.resources :logins
map.resources :signups
map.resources :orders
map.resources :stories
this is creating 28 routes for you.
the error you are getting
“Couldn’t find Login with ID=again”
happens when you try to access a routes that requires an id, like edit, update, show, or delete and then you are not passing any id.
put “/users”
this will cause that error since put maps to update and you have to pass an id to tell the server what you want, like this
put “/users/34”
read more about rails routing at the rials guider for rails 2.3.8
thanks,
I solve my problem, you have given good explanation on ROUTER along width tutorial link.