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til/rails/define-the-root-path-for-the-app.md
2024-10-09 13:23:09 -05:00

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# Define The Root Path For The App
The `root_path` helper that you might want to use in Rails controllers and
views is not available by default.
```ruby
> Rails.application.routes.url_helpers.root_path
ruby/3.2.2/lib/ruby/gems/3.2.0/gems/irb-1.14.0/lib/irb.rb:1285:in `full_message': undefined method `root_path' for #<Module:0x0000000106d11738> (NoMethodError)
Rails.application.routes.url_helpers.root_path
^^^^^^^^^^
Did you mean? logout_path
book_path
```
It needs to be declared in the `config/routes.rb` file with the controller
action that it points to.
```ruby
# config/routes.rb
Rails.application.routes.draw do
root 'home#index'
end
```
Once this is defined the `root_path` will now be available with the rest of
your URL helpers.
```ruby
better-reads(dev)> reload!
Reloading...
better-reads(dev)> Rails.application.routes.url_helpers.root_path
=> "/"
```
[source](https://guides.rubyonrails.org/routing.html#using-root)