Rails new project generation - Cheat Sheet & Quick Revision

Recall & Review

beginner

What command do you use to create a new Rails project?

You use rails new project_name to create a new Rails project folder with all necessary files.

beginner

What does the rails new command generate?

It generates a new folder with a basic Rails app structure including folders like app, config, db, and files like Gemfile and config.ru.

intermediate

How can you create a new Rails project without installing all gems immediately?

Add the --skip-bundle option: rails new project_name --skip-bundle. This skips running bundle install after project creation.

intermediate

What option do you use with rails new to skip generating test files?

Use --skip-test to avoid creating test files when generating a new Rails project.

beginner

Why is it important to run bundle install after creating a new Rails project?

Because it installs all the Ruby gems your Rails app needs to work properly, like Rails itself and other libraries.

Which command creates a new Rails project named 'blog'?

A rails init blog

B rails create blog

C rails start blog

D rails new blog

The correct command to create a new Rails project is rails new project_name.

What folder does Rails create to hold your app's models, views, and controllers?

A lib

B public

C app

D bin

The app folder contains models, views, and controllers in a Rails project.

How do you skip running bundle install when creating a new Rails project?

A --skip-gem

B --skip-bundle

C --no-install

D --no-bundle

Use --skip-bundle to skip running bundle install after project creation.

Which file lists all the Ruby gems your Rails app needs?

A Gemfile

B config.ru

C routes.rb

D database.yml

The Gemfile lists all gems required by your Rails app.

What command installs all gems listed in the Gemfile?

A bundle install

B rails install

C gem install

D rails bundle

The bundle install command installs all gems listed in the Gemfile.

Explain the steps and command to create a new Rails project and prepare it for development.

Think about the command and what happens after running it.

Describe the purpose of the Gemfile in a new Rails project.

It controls what external code your app uses.