Rochester on Rails: Introduction to Rails
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An entry-level introduction to Rails (circa 1.13) I gave at Rochester on Rails. Covers the history, reasons you may use it in a project, and basic architecture.
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Rochester on Rails: Introduction to Rails
- 1. Jason Morrison January 19, 2006 Rochester on Rails Ruby on Rails Sustainable Productivity for Web Application Development
- 2. History
- 3. July 2004 David Heineimeier Hansson
- 6. 37signals
- 8. Hundreds of contributors Thousands of revisions, tickets, and patches
- 9. Rails 1.0 December 13, 2005
- 11. What is Rails?
- 12. Full Stack
- 14. It’s all Ruby!
- 15. (okay, except one file)
- 16. (here it is) database.yml development: adapter: sqlite dbfile: db/dev.db test: adapter: sqlite dbfile: db/test.db production: adapter: sqlite dbfile: db/prod.db
- 17. Everything else is Ruby!
- 18. ActiveRecord
- 19. ActionPack
- 20. ERb views
- 21. ActionWebService
- 22. ActionMailer
- 23. Unit Testing
- 24. AJAX Helpers
- 25. Key Concepts
- 26. DRY: Don’t Repeat Yourself
- 27. +
- 29. =
- 30. Less code!
- 31. Order.hbm.xml 01 <hibernate-mapping> 02 <class name="models.Order" table="ORDERS" 03 dynamic-update="true" dynamic-insert="false"> 06 <id name="id" column="id" type="java.lang.Long" 07 unsaved-value="null"> 08 <generator class="identity"/> 09 </id> 10 <set name="items" lazy="false" inverse="false" 11 cascade="none" sort="unsorted"> 12 <key column="id"/> 13 <one-to-many class="models.Item"/> 14 </set> 15 <property name="name" type="java.lang.String" 16 update="true" insert="true" 17 access="property" column="name"/> 18 </class> 19 </hibernate-mapping>
- 32. Order.java 01 public class Order { 02 private Set items; 03 private String name; 04 private Long id; 05 06 public Long getId() { return id;} 07 public void setId(Long id) { this.id = id;} 08 public Set getItems() { return items;} 09 public void setItems(Set items) { this.items = items; } 10 public String getName() { return name; } 11 public void setName(String name) { this.name = name; } 12 }
- 33. order.rb 01 class Order < ActiveRecord::Base 02 has_many :items 03 end
- 35. class Project < ActiveRecord::Base belongs_to :portfolio has_one :project_manager has_many :milestones has_and_belongs_to_many :categories validates_presence_of :name, :description validates_acceptance_of :non_disclosure_agreement validates_uniqueness_of :key end
- 36. #We’re slashing prices, all books are now half off! Product.find( :all, :conditions => “kind=‘book’” ) do |product| product.price *= 0.5 product.save end
- 37. Increases Programmer Rails increases programmer…
- 38. Increases Programmer Rails increases programmerhappiness!
- 39. How does it fit together?
- 41. Model View Controller ActiveRecord ActionPack } }