カテゴリー: 逆引きメモ

[bash]
$ sudo vi /etc/logrotate.d/rails_production
/var/log/co-meeting/production.log
{
rotate 7
daily
missingok
notifempty
delaycompress
compress
}
[/bash]

動作確認
[bash]
logrotate -dv /etc/logrotate.d/rails_production
reading config file /etc/logrotate.d/rails_production
reading config info for /var/log/co-meeting/production.log

Handling 1 logs

rotating pattern: /var/log/co-meeting/production.log
after 1 days (7 rotations)
empty log files are not rotated, old logs are removed
considering log /var/log/co-meeting/production.log
log does not need rotating
[/bash]

参照 Redmine.JP production.logのローテート

Railsのrunnerについては The Rails Command Line の 1.6 rails runner に説明があります。

実行方法はrails runnderに続けて<モデルのクラス名>.<呼び出すメソッド>を指定します。
[bash]
$ rails runner "Model.long_running_method"
[/bash]

以前に自分でもまとめていました。
Rails3 runnerを利用してでバッチプログラムを実行するサンプル

Rails4
http://guides.rubyonrails.org/action_mailer_basics.html#example-action-mailer-configuration

Rails3.2
http://guides.rubyonrails.org/v3.2.13/action_mailer_basics.html#example-action-mailer-configuration

[ruby]
config.action_mailer.delivery_method = :sendmail
config.action_mailer.perform_deliveries = true
config.action_mailer.raise_delivery_errors = true
[/ruby]

sendmailのテスト
[bash]
$ /usr/sbin/sendmail hoge@examle.com
Test mail
[/bash]
[Ctrl+D]で送信

Rails ActiveRecord – Batch Updates
http://apidock.com/rails/ActiveRecord/Base/update_all/class

Tag.where(:is_featured => true).each do |tag|
  tag.update_attribute(:is_featured, false)
end

これだとTagオブジェクトがロードされるのでメモリーを食ってしまうので直接Update文を実行したい

Rails RDocのActiveRecord::Relation#update_allに記述されている書き方

Tag.where({:is_featured => true }).update_all({ :is_featured => false })

第二引数に条件を付けられるのでこちらの方が簡潔

Tag.update_all({ :is_featured => false }, {:is_featured => true })

どちらも実行されるSQLは同じ

UPDATE `tags` SET `is_featured` = 0 WHERE `tags`.`is_featured` = 1

公式ドキュメント
A Guide to The Rails Command Line 1.3 rails generate
Getting Up and Running Quickly with Scaffolding

Scafold

$ rails g  scaffold Post title:string text:text
      invoke  active_record
      create    db/migrate/20130814020256_create_posts.rb
      create    app/models/post.rb
      invoke    test_unit
      create      test/unit/post_test.rb
      create      test/fixtures/posts.yml
      invoke  resource_route
       route    resources :posts
      invoke  scaffold_controller
      create    app/controllers/posts_controller.rb
      invoke    erb
      create      app/views/posts
      create      app/views/posts/index.html.erb
      create      app/views/posts/edit.html.erb
      create      app/views/posts/show.html.erb
      create      app/views/posts/new.html.erb
      create      app/views/posts/_form.html.erb
      invoke    test_unit
      create      test/functional/posts_controller_test.rb
      invoke    helper
      create      app/helpers/posts_helper.rb
      invoke      test_unit
      create        test/unit/helpers/posts_helper_test.rb
      invoke  assets
      invoke    coffee
      create      app/assets/javascripts/posts.js.coffee
      invoke    scss
      create      app/assets/stylesheets/posts.css.scss
      invoke  scss
      create    app/assets/stylesheets/scaffolds.css.scss

Controller

$ rails generate controller admin/Users

Model

Rspec