#Rails coding 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

Ctrl + C

Get stats on your Ruby on Rails code

rake stats

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

Initialize 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