Because I got tired of googling, I’ll list down some stuff I have been using on my Rails projects.
For more info on the Rails Command Line, check out Rails Guides – Rails Command Line.
To create a new rails app with PostgreSQL as the database
$ rails new app_name -d postgresql
Start the Postgres server:
$ pg_ctl start
Adding gems to your Gemfile:
$ bundle install
Make sure to run $ bundle update to update all of the dependencies to the latest versions:
$ bundle update
To access your rails app through the localhost. By default it’s at http://localhost:3000
$ rails s
To run the rails console to interact with your Rails app thru the command line:
$ rails c
Reload changes without have to do a restart
$ reload!
Generators:
Using scaffold:
$ rails g scaffold Post name:string body:text
A scaffold in Rails is a full set of model, database migration for that model, controller to manipulate it, views to view and manipulate the data, and a test suite for each of the above.
Rails Guide – 1.3bin/rails generate
To create a controller, the name should be: first letter capital, and in the plural.
$ rails g controller Posts
To create a controller with actions do:
$ rails g controller Posts index new edit show
To create a model, the name should be: first letter capital, and in a singular.
$ rails g model Post name:string body:text
Migration:
To generate a migration file:
$ rails g migration CreateArticles name:string part_number:string
If you need to add or make changes as long as you haven’t run db:migrate. Go to schema.rb to make the changes otherwise you need to generate a new migration file.
$ rails g migration AddSomethingToArticles something:string
To run the migrations:
$ rails db:migrate
Sometimes things go wrong, for that “Oh shit!” moment.
To destroy the model article:
$ rails destroy model Article
To undo your most recent migration:
$ rails db:rollback
Testing:
For more info on Rails Testing, check out Rails Guides -Testing Rails Applications.
To run every test to verify if it passes or not.
$rails test
To run a specific test on a specific folder/location to verify if it passes or not.
$ rails test test/models/task_test.rb
$ rails test test/controllers/task_test.rb
Routes:
To get a list of available routes in your application:
$ rails routes
To remove all old assets and rebuild them:
$ rails assets:clean && rails assets:precompile
Deploying your Rails app to Heroku
For more detailed instructions on how to deploy head on over to Heroku Dev Center – Deploying with Git
$heroku login
$heroku create
$heroku rename
$git add .
$git commit -m “commit message”
$git push
$git push heroku master
$heroku run rails db:migrate
$heroku open
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This post first appeared on Jaren Cudilla This Is A Blog Or I Think It Is, please read the originial post: here