Chapter 3 - REST, Resources, and Rails

Question 1

CRUD

Answer 1

Create, Read, Update, Delete is the classic summary of the spectrum of database operations.

Question 2

resources

Answer 2

If you put

resources :auctions

into your config/ routes.rb file, you will have created four named routes, which, in a manner to be described in this chapter, connect to seven controller actions. And those actions have nice CRUD-like names, as you will see.

Question 3

How to specify the request method when you generate a URL.

Answer 3

1. The default request method is GET.
2. In a form_tag or form_for call, the POST method will be used automatically.
3. When you need to (which is going to be mostly with PATCH and DELETE operations), you can specify a request method along with the URL generated by the named route.

Question 4

Limiting Routes Generated

Answer 4

resources :clients, except: [: index]

resources :clients, only: [: new, :create]

Question 5

Limiting Routes Generated

Answer 5

resources :clients, except: [: index]

resources :clients, only: [: new, :create]

Question 6

Nested Resources

Answer 6

resources :auctions do
resources :bids
end

link_to “See all bids”, auction_bids_path( auction)

Question 7

Nested singular routes

Answer 7

For the singular routes (show, edit, destroy), you need at least two arguments:

link_to “Delete this bid”, auction_bid_path( auction, bid), method: :delete

Question 8

Nested singular routes

Answer 8

For the singular routes (show, edit, destroy), you need at least two arguments:

2 different ways:

link_to “Delete this bid”, auction_bid_path( auction, bid), method: :delete

link_to “Delete this bid”, auction_bid_path( auction, bid), method: :delete

Question 9

Nested singular routes

Answer 9

For the singular routes (show, edit, destroy), you need at least two arguments:

2 different ways:

link_to “Delete this bid”, auction_bid_path( auction, bid), method: :delete

link_to “Delete this bid”, auction_bid_path( auction, bid), method: :delete