CODEWITHSUNDEEP
ruby-on-railsroutes
Hussein.
Hussein.

Reputation: 179

Error: `Couldn't find Course with 'id'=` when visiting `/courses/show`

I'm new to Rails, and I'm setting up models/controllers for Course and some other models.

When I visit the /courses/show URL in my browser I get the following error:

Couldn't find Course with 'id'=

Screenshot here.

Here's the relevant line from my rake routes and routes.rb:

rake routes

  courses_show GET      /courses/show(.:format)                courses#show

config/routes.rb

  get 'courses/show'

Upvotes: 1

Views: 115

Answers (1)

smathy
smathy

Reputation: 27961

You have specified the four routes without any :id parameter, I don't know why you would expect them to have an :id parameter.

I'd recommend that you read the Rails guide on routing and also read the comments in the generated config/routes.rb, in that file you'll see comments like this:

# Example of regular route:
#   get 'products/:id' => 'catalog#view'

So, extrapolating that to your example you might end up with:

get 'courses/:id' => 'courses#show'

The example that follows that one shows how to add a named route helper using the :as option:

get 'courses/:id' => 'courses#show', as: :courses_show

Something you'll also see when you read the guide or the comments is that you can use the resources helper to create standard restful routes.

Upvotes: 1

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