First Rails application - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a new Rails application named 'blog'.

Ruby on Rails

rails [1] blog

Drag options to blanks, or click blank then click option'

Anew

Bstart

Ccreate

Dinit

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'rails create' instead of 'rails new'.

Using 'rails init' which is not a valid command.

Using 'rails start' which is for running the server, not creating an app.

The command rails new blog creates a new Rails application named 'blog'.

2fill in blank

medium

Complete the code to start the Rails server.

Ruby on Rails

bin/rails [1]

Drag options to blanks, or click blank then click option'

Aserver

Bcreate

Cstart

Drun

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'bin/rails start' which is not a valid Rails command.

Using 'bin/rails run' which does not start the server.

Using 'bin/rails create' which is for generating files.

The command bin/rails server starts the Rails development server.

3fill in blank

hard

Fix the error in the command to generate a controller named 'Posts'.

Ruby on Rails

bin/rails [1] controller Posts

Drag options to blanks, or click blank then click option'

Acreate

Bmake

Cbuild

Dgenerate

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'make' or 'build' which are not Rails commands.

Using 'create' which is not the correct Rails generator command.

The correct command to generate a controller is bin/rails generate controller Posts.

4fill in blank

hard

Fill both blanks to define a root route to the 'index' action of 'posts' controller in config/routes.rb.

Ruby on Rails

root to: '[1]#[2]'

Drag options to blanks, or click blank then click option'

Aposts

Bindex

Chome

Dshow

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'home#index' instead of 'posts#index'.

Using 'posts#show' which shows a single post, not the index.

Swapping the controller and action names.

The root route should point to 'posts#index' to show the index action of the posts controller.

5fill in blank

hard

Fill all three blanks to create a migration that adds a 'title' string column to the 'posts' table.

Ruby on Rails

bin/rails [1] migration Add[2]To[3]

Drag options to blanks, or click blank then click option'

Agenerate

BTitle

CPosts

Dcreate

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'create' instead of 'generate' for the first blank.

Swapping 'Posts' and 'Title' in the migration name.

Using lowercase for the migration name parts.

The command bin/rails generate migration AddTitleToPosts creates a migration to add a title column to posts.