meguro.rb#9で発表した資料です 「心霊現象」という文字が映らない心霊現象が発生しております。
meguro.rb#9で発表した資料です 「心霊現象」という文字が映らない心霊現象が発生しております。
My favourite part of Rails is clearly ActiveRecord’s scopes. Their expressiveness and their reusability is simply great. You’ll see below five tricks I usually bring during consulting missions. 1) Join query with condition on the associated tableSay you have a users table, with a profile association. If you need to query users which profile is validated you may end up doing: # User model scope :ac
Rails is known for its convention over configuration design paradigm. For example, database table and column names are automatically derived and generated from the model classes. This is very convenient, but when you want to build a new application upon an existing (“legacy”) database schema you have to explore the configuration side of this paradigm. The most basic operation for dealing with a le
環境 osx10.9.1 ruby2.0.0 rails4 MySQL5.6.x 経緯 既にMySQL上に存在するtableを使ってrailsしてみた。 MySQLと接続する 下のサイトを参考にして、database.yamlを定義。 - development: adapter: mysql2 encoding: utf8 database: my_db_name username: root password: root host: localhost pool: 5 timeout: 5000 参考サイト http://threetreeslight.com/post/61834000065/rails-db MySQL上のテーブルからscheme.rbを生成する。 rake environment -v -t RAILS_ENV=development db:schema:dump
Active Record is responsible for communicating with the persistence layer by default in Ruby on Rails applications. Using Active Record effectively and efficiently can greatly improve an application’s code. In Ruby on Rails 4.0, some material changes have been made to Active Record. Understanding these changes, and how they are best utilized is important for any Rails developer. To help explain th
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