Herokuçµç±ã§Sinatraã使ã£ã¦ã¿ã¦ããã®ã§ãããModelã¨ãã¦Sequelã使ã£ã¦ã¿ããã¨ã«ãã¾ããã Userã¯ã©ã¹ãä½ã DBããªã³ã¡ã¢ãªã«ãã¦ããã¦ããã¼ãã«ä½æã»ã¯ã©ã¹ã®å®£è¨ 1 % irb 2 require 'rubygems' 3 require 'sequel' 4 5 DB = Sequel.sqlite 6 DB << "CREATE TABLE users (id INTEGER PRIMARY KEY, name VARCHAR(255) not NULL)" 7 8 class User < Sequel::Model 9 end 1 User.create(:name => 'satoko') 2 3 User.find(:name => 'satoko') 4 User.find(:id => 1).update(:name =
dataset = DB[:users].join(:items, :user_id => :id).find(:items__id => 5) ãããªæ§æãæ¸ããã¨ãã§ãuserãã¼ãã«ã«ãitemãã¼ãã«ã«ãåä¸åã«ã©ã idããã£ãã¨ããã ãããªã¨ãã¯ä¸è¨ã®æ¸ãæ¹ã§ã¯SQLæã¨ã㦠SELECT * FROM USER INNER JOIN ITEM ON ITEM.user_id = USER.id WHERE ITEM.id = 5 ãããªæãã«å±éããã¦ãidããã¾ãåããªãããã¾ãåãæ¹æ³ãç¥ãããããã 解決çã®1ã¤ã¨ãã¦ãgraphã使ãã¨ããã®ãããã¿ããã dataset = DB[:users].graph(:items, :user_id => :id).find(:items__id => 5) ããæ¸ãã¨SQLæä¸ã§ã¯*ã®é¨åãå ¨é¨å±éãã㦠SELECT U
æ®éã«schema pluginã使ã£ã¦ã¢ãã«ãå®ç¾©ãã¦ãã¾ãããã ãªãã¡ã¬ã³ã¹ãè¦ãã¨schemaã¯ãã¹ãåãã®å¤æ´ã®äºå®ãç¡ãDBåãã§ã æ®éã¯migrationã使ã£ã¦ããã¨æ¸ãã¦ããã¾ãã This plugin is mostly suited to test code. If there is any chance that your applicationâs schema could change, you should be using the migration extension instead. Sequel: The Database Toolkit for Ruby Sequel::Plugins::Schema PLAIN TEXT RUBY: # db/migrate/001_create_posts.rb class CreatePosts <S
Rubyã«ããã軽éãªãã¼ã¿ãã¼ã¹ãã¼ã«ãããã¨ãã¦ããªããªããæ軽ãªSequelã§ãããå®éã«ä½¿ãã«ããã£ã¦ããã¤ãæ©ãã ãã¤ã³ãããã£ãã®ã§ãåå¿é²ã¨ãã¦ãã®è§£æ±ºæ³ãã¡ã¢ãã¦ããã¾ãã ãªãããã®è¨äºã¯Ruby 1.9.1p378ã¨Sequel 3.8.0ã®çµã¿åããã対象ã¨ãã¦æ¸ãã¦ãã¾ãã ã¢ãã«ã®å®ç¾©åã«DBæ¥ç¶ãããããªã Sequelã«ãActiveRecordãã¿ã¼ã³ã«åºã¥ããã¢ãã«ã®ä»çµã¿ãç¨æããã¦ãã¾ããããã¢ãã«ãå®ç¾©ããæç¹ã§ãã¼ã¿ãã¼ã¹ã¸ã®æ¥ç¶ãåå¨ãã¦ããªããã°ãªããªããã¨ããå¶ç´ãããã¾ãã ã¤ã¾ãã require 'sequel' Sequel.connect('sqlite://test.db') class User < Sequel::Model; end p User.all ã¯åãã¾ããã require 'sequel' class User
Objecttank@rubyã®DBã¢ã¯ã»ã¹ã©ã¤ãã©ãªãDBIããSequelã«ç§»è¡ä¸ãSequelã®åèãã¼ã¸http://sequel.rubyforge.org/http://www.slideshare.net/zhesto/ruby-off-rails-japanesehttp://xxx.mostevildanceclassics.com/page/r/SequelRubyã¤ã³ã¹ãã¼ã« sudo gem install sequel ã¨ããããå®è¡sequelã®ã³ãã³ãã©ã¤ã³ãã¼ã«ãrailsã®script/consoleã®ãããªãã®ã sequel mysql://user:password@localhost/dbname DBã¨ããååã®å¤æ°ã«æ¥ç¶ãªãã¸ã§ã¯ããæ ¼ç´ããããã¼ãã«å=userããã£ãã¨ããã¨ããã DB[:user].filter(:id => 10).a
ã·ã³ãã«ãªå®è£ ã ã¢ãã«ã¯ã©ã¹ãå¿ é ã§ã¯ãªãããããã¼ãã«ã表ããªãã¸ã§ã¯ããçµç±ãã¦DBæä½ãè¡ãã ãã¶ã¤ã³ãã¿ã¼ã³ã¯ãTable Data Gatewayã«å¯¾å¿ã æ¨æºæ·»ä»ã®Sequel::Modelã«ãã£ã¦ãã¢ãã«ã¯ã©ã¹ã使ããã¨ãå¯è½ã ãã¤ã°ã¬ã¼ã·ã§ã³ç¨ã®ã³ãã³ãã©ã¤ã³ãã¼ã«ãä»å±ã ã¢ãã«ã使ããªãå ´å require 'rubygems' require 'sequel' # DBæ¥ç¶ DB = Sequel.sqlite('book-sq.db') # ã¹ãã¼ãä½æ unless DB.table_exists?(:books) DB.create_table(:books) do primary_key :id string :title integer :year end end # ãã¼ã¿ã®ä½æ DB[:books].insert(:title => "åãã¦ã®Ru
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