README.md

rails-commands-cheatsheet

Rails commands

# Create a new app
rails new myapp

# Generate a complete scaffold (migration, model, controller, views)
rails g scaffold Object attribute:datatype

# Eg. Create a scaffold for a book with a title, author and summary
rails g scaffold Book title:string author:string summary:text

# Generate a controller and view/s
rails g controller controller_name action


# Eg. Create a home index page/home controller with index action
rails g controller home index

# Generate a data model with corresponding migration (a data model/database table)
rails g model Object attribute:datatype

# Add an attribute to a data model/database table
rails g migration AddAttributeToObject attribute:datatype

# Start the server
rails s

# Stop the server
Cntrl + C

Rake commands

# create database tables from migration file
rake db:migrate

# seed the database with data in db/seeds.rb file
rake db:seed

# rollback the last migration
rake db:rollback

# check your app’s routes
rake routes

Git commands

# Initialise a git repository for your app
git init

# Add all files to your repository
git add --all

# Commit all changes to your repository
git commit -am 'message'

# Check the state of your git repository
git status

# Check your repository remote links
git remote -v

# Push the master branch of your repository to a remote named origin
git push origin master

# Create a new branch and checkout the new branch in one command
git checkout -b newbranch

Heroku commands

# Create a new app/repository on Heroku
heroku create appname

# Migration
heroku run rake db:migrate

# Check Heroku logs
heroku logs