`default_controller_and_action': missing :controller (ArgumentError) in Ruby 3

Question

I am creating a website were users can post jobs and users can login,register etc. I have created my jobs model and created my user model for the login/register part. When I try to load rails server I keep getting this error below and cannot figure out what I'm doing wrong or how to fix. I originally was trying to use devise and create the users model but was having issues so I deleted the files for it. I am wondering if I deleted something or if I am missing something in my routes.rb file. Can someone help or point me in the right direction? I will post my routes.rb file as well. Thanks for any guidance as I am still new to rails. The only thing I added to the routes.rb file was root :to => "sessions#login" and below that. Im sure other info in this was added when i created the models and controller.

/home/whitey7/.rvm/gems/ruby-1.9.3-p194/gems/actionpack-3.2.8/lib/action_dispatch/routing/mapper.rb:181:in `default_controller_and_action': missing :controller (ArgumentError)**

Routes.rb

Application.routes.draw do 
 get "sessions/login,"
 get "sessions/home,"
 get "sessions/profile,"
 get "sessions/setting"
 get "users/new"

 resources :jobs 



root :to => "jobs#index"
root :to => 'home/index'
 root :to => "sessions#login"
match "signup", :to => "users#new"
match "login", :to => "sessions#login"
match "logout", :to => "sessions#logout"
match "home", :to => "sessions#home"
match "profile", :to => "sessions#profile"
match "setting", :to => "sessions#setting"

Solution 1

Please check if the jobs controller is still there. Because this is the first root directive in your routes declarations (and still, it does not make sense to have more than one), Rails is checking if this root route is available. It seems that the jobs controller is missing and causing this error.

Solution 2

I think you still have a route in routes.rb which in invalid. Please recheck all the routes, corresponding controller and action. Please also share the full error trace, that way we can pin-point the issue.

Solution 3

At first, check Rails routing documentation. I think you are getting this error because you are unable to define route file. The problem I figure out in your route file are :-

a. You have three different root in your route file.

root :to => "jobs#index"
root :to => 'home/index'
 root :to => "sessions#login"

b. You are defining same routes multiple times.

 get "sessions/login,"
 get "sessions/home,"
 get "sessions/profile,"
 get "sessions/setting"
 get "users/new"

match "signup", :to => "users#new"
match "login", :to => "sessions#login"
match "home", :to => "sessions#home"
match "profile", :to => "sessions#profile"
match "setting", :to => "sessions#setting"

The solution might be as follows :-

a. Fix the root path at first. Which path you want to make root whether it is jobs index or home index or sessions login.

b. I think you are trying to define your routes as such

match "signup", :to => "users#new", via: :get
match "login", :to => "sessions#login", via: :get
match "home", :to => "sessions#home", via: :get
match "profile", :to => "sessions#profile", via: :get
match "setting", :to => "sessions#setting", via: :get

Comments

[suhovius]

I just can guess that you have not some controller or action at your app. And you set this non existing controller as default route. Please provide full error trace that you have for more details, to figure out where is the source of error.

[awenkhh]

why do you have three different root assignments? This is not working ... remove two of them and check again

[Awhitey98]

Thanks for the info I will check and see if the job controller is still there. I thought i did check that maybe I didnt. Also When I initally set up the jobs model and it set the roots route up. I was following a tutorial for the users model that I found and it had me add another root assignment. I Guess i didnt realize it wasn't needed and only one assignment was.