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Ruby on Railsの紹介
Ruby on Railsの紹介
Ruby on Railsの紹介
Ruby on Railsの紹介
Ruby on Railsの紹介
Ruby on Railsの紹介
Ruby on Railsの紹介
Ruby on Railsの紹介
Ruby on Railsの紹介
Ruby on Railsの紹介
Ruby on Railsの紹介
Ruby on Railsの紹介
Ruby on Railsの紹介
Ruby on Railsの紹介
Ruby on Railsの紹介
Ruby on Railsの紹介
Ruby on Railsの紹介
Ruby on Railsの紹介
Ruby on Railsの紹介
Ruby on Railsの紹介
Ruby on Railsの紹介
Ruby on Railsの紹介
Ruby on Railsの紹介
Ruby on Railsの紹介
Ruby on Railsの紹介
Ruby on Railsの紹介
Ruby on Railsの紹介
Ruby on Railsの紹介
Ruby on Railsの紹介
Ruby on Railsの紹介
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Ruby on Railsの紹介

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NSEG第19回勉強会で発表した内容です. …

NSEG第19回勉強会で発表した内容です.
Railsの便利さをもっといろんな人に知ってもらいたくて,発表しました.

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Transcript

  1. Ruby on Rails2
  2. • 2•• Ruby/Ruby on Rails/Ubuntu/C#/ 2011• Twitter: @falcon_8823• Facebook: falcon.8823
  3. Ruby on Rails••• Model View Controller(MVC)• • DRY(Don’t Repeat Yourself)• • CoC(Convention over Configurarion)
  4. QR http://conf-in-dev.heroku.com/
  5. conf-in-dev.heroku.com
  6. Ruby 1.8.7 + Rails 2.3.11Ruby 1.9.2 + Rails 3.1.0
  7. Rails••••• Rails•
  8. Rails• •
  9. • • • •• • • •
  10. $ rails new nseg‐blog$ cd nseg‐blog$ rails generate scaffold article title:string author:string body:text$ rake db:migrate$ rails server
  11. http://nseg-blog-1.heroku.com/articles Create, Update Delete Read
  12. ••
  13. $ rails g model comment article_id:integer user_name:stringbody:string$ rails g controller comments create destroy https://github.com/falcon8823/nseg-blog-2
  14. class Article < ActiveRecord::Base # # article comments # article comments has_many :comments, dependent: :delete_all # validates :title, :author, :body, presence: trueend app/model/article.rb
  15. class Comment < ActiveRecord::Base belongs_to :article validates :user_name, :body, presence: true# article_id attr_protected :article_idend app/model/comment.rb
  16. <ul><% @article.comments.each do |comment| %><li><%= "#{comment.body} -- #{comment.user_name} (#{comment.created_at})" %><%= link_to , [@article,comment], confirm: , method: :delete %></li><% end %></ul><%= form_for([@article,@comment]) do |f| %><p> :<%= f.text_field :user_name %> : <%= f.text_field :body %><%= f.submit %></p><% end %> app/views/article/show.html.erb
  17. # coding: utf-8class CommentsController < ApplicationController def create @comment = Comment.new(params[:comment]) @comment.article_id = params[:article_id] @article = Article.find(params[:article_id]) if @comment.save redirect_to @comment.article, notice: else redirect_to @article, notice: end end def destroy @comment = Comment.find(params[:id]) @comment.destroy redirect_to Article.find(params[:article_id]), notice: endend app/controllers/comments_controller.rb
  18. http://nseg-blog-2.heroku.com/articles
  19. • • •• •• • • • •

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