Slides

Rails Tools
Dan Bunker
http://www.linkedin.com/in/bunkerdan
Friday, May 10, 2013

Gemfile
 Keeps track of all dependencies in your project

Gemfile
 Specify alternate gem repositories (like a corporate gem repo)

Gemfile
 Group dependencies by environment

 Add a gem dependency
 gem‘gem_name’
 gem‘gem_name’,‘version’
 gem‘gem_name’,‘git_repo’
Gemfile
 Group dependencies by environment

Database Migrations in Depth
 Keep your database structure in sync in all environments
 Development (Bleeding Edge)
 Testing (Close to development or slightly behind)
 Production (Behind testing and development)

 schema_migrations table used to track versions

Development
Version 9
App
release 1.3

Testing
Version 6
App
release 1.2
Development
Version 9
App
release 1.3

Production
Version 3
App
release 1.1
Testing
Version 6
App
release 1.2
Development
Version 9
App
release 1.3

Data Seeding
 Load preferences, lookups or other needed data

Data Seeding
 Seed data goes in db/seeds.rb

Data Seeding
 Seed data goes in db/seeds.rb
 rake db:seed

Generators Overview

Generators Overview
 Generators create boilerplate code for pieces of your application

 Rails provides a set of default generators
 “rails generate”or“rails generate --help”
Generators Overview

 Rails provides a set of default generators
 “rails generate”or“rails generate --help”
Generators Overview
 Gems can provide generators and you can write your own custom
generators

Generating Models

Generating Models
 Model generator creates an ActiveRecord model and a migration

Generating Models
 Pass in attributes and their data types to leverage more code
generation

Generating Models
 Pass in attributes and their data types to leverage more code
generation
 rails generate model model_name attr1:string attr2:integer etc.

Generating Controllers

 Controller generator will create a controller and folder stubs for its views

 Pass in actions to have the generator create view stub files for the actions

 Pass in actions to have the generator create view stub files for the actions
 rails generate controller contr_name action1 action 2

Rails Console Overview

 Interactive interpreter with your rails project loaded

 Good way to become familiar with code or features or to debug

 Start the rails console with the following command
 rails console
 rails console production
 Good way to become familiar with code or features or to debug

Rails DB Console

Rails DB Console
 A wrapper around your database console

Rails DB Console
 An easy way to deal with MySQL, PostgreSQL and SQLite

Rails DB Console
 Start the rails db console with the following command
 rails dbconsole
 rails dbconsole production -p
 An easy way to deal with MySQL, PostgreSQL and SQLite

Other Rake Tasks

Other Rake Tasks
 rake about

Other Rake Tasks
 rake about
 rake stats

Other Rake Tasks
 rake about
 rake stats
 rake test

Asset Pipeline Overview

 Framework for images, JS and CSS resources

 Rails asset pipeline will auto minify and compress JS and CSS

 Rails asset pipeline will auto minify and compress JS and CSS
 Asset pipeline supports enhanced languages such as CoﬀeeScript and
SASS

Summary
 Gemfiles and dependencies

Summary
 Database Migrations

Summary
 Data seeding

Summary
 Data seeding
 Generators overview - Model, Controller

Summary
 Data seeding
 rails console and rails dbconsole

Summary
 Data seeding
 Other rake tasks

Summary
 Data seeding
 Other rake tasks
 Asset pipeline

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