Ruby on Rails Tutorial sample application

This is the sample application for Ruby on Rails Tutorial: Learn Web Development with Rails by Michael Hartl.

Tutorials

Follow the tutorial found on Rails Tutorial

Heroku

Guide to set up Heroku

Chapter 3

• The rails script generates a new controller with rails generate controller ControllerName .

• New routes are defined in the file config/routes.rb.

• Rails views can contain static HTML or embedded Ruby (ERb).

• Automated testing allows us to write test suites that drive the development of new features, allow for confident refactoring, and catch regressions.

• Test-driven development uses a “Red, Green, Refactor” cycle.

• Rails layouts allow the use of a common template for pages in our application, thereby eliminating duplication.

Chapter 4

• Ruby has a large number of methods for manipulating strings of characters.

• Everything in Ruby is an object.

• Ruby supports method definition via the def keyword.

• Ruby supports class definition via the class keyword.

• Rails views can contain static HTML or embedded Ruby (ERb).

• Built-in Ruby data structures include arrays, ranges, and hashes.

• Ruby blocks are a flexible construct that (among other things) allow natural iteration over enumerable data structures.

• Symbols are labels, like strings without any additional structure.

• Ruby supports object inheritance.

• It is possible to open up and modify built-in Ruby classes.

Chapter 5

• Use HTML5 to define a site layout with logo, header, footer, and main body content.

• Rails partials are used to place markup in a separate file for convenience.

• CSS allows us to style the site layout based on CSS classes and ids.

• The Bootstrap framework makes it easy to make a nicely designed site quickly.

• Sass and the asset pipeline allow us to eliminate duplication in our CSS while packaging up the results efficiently for production.

• Rails allows us to define custom routing rules, thereby providing named routes.

• Integration tests effectively simulate a browser clicking from page to page.

Chapter 6

• Migrations allow us to modify our application’s data model.

• Active Record comes with a large number of methods for creating and manipulating data models.

• Active Record validations allow us to place constraints on the data in our models.

• Common validations include presence, length, and format.

• Regular expressions are cryptic but powerful.

• Defining a database index improves lookup efficiency while allowing enforcement of uniqueness at the database level.

• We can add a secure password to a model using the built-in has_secure_password method.

License

All source code in the Ruby on Rails Tutorial is available jointly under the MIT License and the Beerware License. See LICENSE.md for details.

Getting started

To get started with the app, clone the repo and then install the needed gems:

$ bundle install --without production

Next, migrate the database:

$ rails db:migrate

Finally, run the test suite to verify that everything is working correctly:

$ rails test

If the test suite passes, you'll be ready to run the app in a local server:

$ rails server

For more information, see the Ruby on Rails Tutorial book.

README

This README would normally document whatever steps are necessary to get the application up and running.

Things you may want to cover:

• Ruby version

• System dependencies

• Configuration

• Database creation

• Database initialization

• How to run the test suite

• Services (job queues, cache servers, search engines, etc.)

• Deployment instructions

• ...