![Ruby GemsA gem is a ruby library.gem –v 1.3.5 or highergem list[sudo] gem install](https://image.slidesharecdn.com/4-railsmvc-090915233737-phpapp01/85/Intro-to-Rails-and-MVC-8-320.jpg)
![RailsRails is distributed as a Ruby gem.gem list rails 2.3.4 or higher[sudo] gem install rails](https://image.slidesharecdn.com/4-railsmvc-090915233737-phpapp01/85/Intro-to-Rails-and-MVC-9-320.jpg)
![rakeRake is “make” for Ruby. Rails requires rake.Rake is distrubted as a gem.gem list rake0.8.7 or higher[sudo] gem install rake](https://image.slidesharecdn.com/4-railsmvc-090915233737-phpapp01/85/Intro-to-Rails-and-MVC-10-320.jpg)
![HerokuSimple cloud hostingWeb sign-up for free account: heroku.com [sudo] gem install heroku](https://image.slidesharecdn.com/4-railsmvc-090915233737-phpapp01/85/Intro-to-Rails-and-MVC-17-320.jpg)
![Safe from SQL injectionclass User < ActiveRecord::Base def self.authenticate_unsafely(user_name, password) find(:first, :conditions => "user_name = '#{user_name}' AND password = '#{password}'") end def self.authenticate_safely(user_name, password) find(:first, :conditions => [ "user_name = ? AND password = ?", user_name, password ]) end def self.authenticate_safely_simply(user_name, password) find(:first, :conditions => { :user_name => user_name, :password => password }) end end](https://image.slidesharecdn.com/4-railsmvc-090915233737-phpapp01/85/Intro-to-Rails-and-MVC-26-320.jpg)
Intro to Rails and MVC
Download as PPTX, PDF2 likes660 views
Ruby on Rails is an open-source web application framework written in Ruby. It was first released in 2004 and emphasizes convention over configuration, and is designed to make programming web applications easier. The core dependencies needed to use Rails are Ruby, RubyGems, Rails, a database, and tools like Git for version control. Rails uses the MVC pattern with ActiveRecord for models, ActionView for views, and ActionController for controllers.
More Related Content
![Strategic Picks — Prioritising the Right Agentic Use Cases [2/6]](https://cdn.slidesharecdn.com/ss_thumbnails/session-2-250902135931-4c97717a-thumbnail.jpg?width=560&fit=bounds)
Intro to Rails and MVC
- 1. Ruby on RailsAnIntroductionSarah AllenBlazing Cloud
- 2. Ruby on RailshistoryRuby on Rails was extracted from 37signals’ Basecamp by David Heinemeier Hansson (DHH)July 2004: first released as open source Feb 2005: first external commit rights Oct 2007: ships with Mac OS X v10.5 "Leopard”
- 3. Rails Philosophy OpinionatedConvention over configuration DRY (Don't Repeat Yourself)less code means it's easier to maintain & modify Test Driven Development (TDD) Minimal code - maximal effect
- 4. Prerequistes Core dependencies: Ruby,Rails, DBTools: vcs, IDE, test frameworks, deployment
- 5.
- 6. Ruby Rails is aframework written in the Ruby language.Great Rails developers are great Ruby developers.
- 7. Ruby ruby -v1.8.6 or1.8.7
- 8. Ruby GemsA gem isa ruby library.gem –v 1.3.5 or highergem list[sudo] gem install
- 9. RailsRails is distributedas a Ruby gem.gem list rails 2.3.4 or higher[sudo] gem install rails
- 10. rakeRake is “make”for Ruby. Rails requires rake.Rake is distrubted as a gem.gem list rake0.8.7 or higher[sudo] gem install rake
- 11. Tools Source Code Controlwith Git Terminal / git bash on windowsEditor / IDETest FrameworksHerok for Easy Deployment
- 12. gitGit is forsource code control.which git (mac, unix)git bash on windowsWhy Git?Most Ruby and Rails developers use gitEco-system of toolsModern Source Code Control
- 14. command lineMac/Unix TerminalGitBashon Windows
- 15. Editor / IDERubyMineTextMate(Mac-only)Komodo (free)
- 16. Test Frameworksgem listrspecrspec (1.3.0)rspec-rails (1.3.2)gem list cucumbercucumber (0.6.2)cucumber-rails (0.2.4)
- 17. HerokuSimple cloud hostingWebsign-up for free account: heroku.com [sudo] gem install heroku
- 18. Prerequisites Core dependenciesRubyRuby GemsRails(gem)DatabaseToolsGit Terminal / git bash on windowsRake (gem)Test Frameworksrspec, rspec-railscucumber, cucumber-railsHeroku (for deployment)
- 19.
- 20.
- 21. MVCModel: ActiveRecordRepresents whatis in the databaseView: ActionView, erbModel rendered as HTMLController: ActionControllerReceives HTTP actions (GET, POST, PUT, DELETE)Decides what to do, typically rendering a view
- 22.
- 23. views<% @people.each do|person| %><tr> <td><%=h person.first_name %></td> <td><%=h person.last_name %></td> <td><%=h person.present %></td></tr><% end %>
- 24. View Exercise1. On the main people page a. Change “Listing people” to “My Class List” b. Remove the “Present” column 2. When you click “show,” the page should read “Joy McDonald was not present at class” or “Bob Smith was present at class”
- 25. ActiveRecordp = newPersonp = new Person(:first => "May", :last => "Fong")p.savep.save!Person.create(:first => "May", :last => "Fong")Person.create!(:first => "May", :last => "Fong")
- 26. Safe from SQLinjectionclass User < ActiveRecord::Base def self.authenticate_unsafely(user_name, password) find(:first, :conditions => "user_name = '#{user_name}' AND password = '#{password}'") end def self.authenticate_safely(user_name, password) find(:first, :conditions => [ "user_name = ? AND password = ?", user_name, password ]) end def self.authenticate_safely_simply(user_name, password) find(:first, :conditions => { :user_name => user_name, :password => password }) end end