RESTful resource routes in Ruby on Rails - Cheat Sheet & Quick Revision

Recall & Review

beginner

What does RESTful resource routing in Rails do?

It automatically creates standard routes for common actions like showing, creating, updating, and deleting resources, following REST principles.

beginner

Name the 7 standard RESTful actions Rails generates for a resource.

index, show, new, create, edit, update, destroy

beginner

What HTTP verb and path does the 'create' action use in RESTful routes?

POST request to /resources (e.g., POST /articles)

beginner

How do you define RESTful routes for a resource named 'books' in Rails?

Use resources :books in the config/routes.rb file.

beginner

What URL and HTTP verb does the 'edit' action use for a resource with id 5?

GET request to /resources/5/edit (e.g., GET /books/5/edit)

Which HTTP verb is used to update a resource in RESTful routes?

A PATCH

B GET

C POST

D DELETE

The PATCH verb is used to update an existing resource partially or fully.

What route helper does Rails generate for the 'show' action of a resource named 'posts'?

A posts_path

B post_path(id)

C new_post_path

D edit_post_path(id)

The 'show' action uses post_path(id) to show a single post.

Which RESTful action corresponds to the URL '/articles/new'?

A index

B show

C new

D edit

The '/articles/new' URL shows the form to create a new article.

What does the 'destroy' action do in RESTful routes?

A Deletes a resource

B Shows a resource

C Creates a resource

D Edits a resource

The 'destroy' action deletes a resource from the database.

How do you limit RESTful routes to only 'index' and 'show' actions in Rails?

A resource :items, only: [:index, :show]

B resources :items, except: [:index, :show]

C resources :items, limit: [:index, :show]

D resources :items, only: [:index, :show]

Use the 'only' option to specify which actions to generate routes for.

Explain how RESTful resource routes in Rails map HTTP verbs and URLs to controller actions.

Think about how Rails uses 'resources' to create these routes automatically.

Describe how you would customize RESTful routes in Rails to only include certain actions.

Look at the options you can pass to 'resources' in routes.rb.