# 2023-04-21 Rails ###### tags: `Ruby on Rails` ## ransack > rubygem ## elasticsearch-rails > rubygem ## searchkick > rubygem ## rdbms vs nosql ## melisearch > 較好的elasticsearch ## 多層 comment ### 自我參照 ```ruby= # Comment has_many :replies, class_name: 'Comment', foreign_key: 'reply_id' ``` ## eager loading > 解決 N + 1 使用 IN (xx, yy, zz) ## rspec ```bash $ bundle add rspec-rails $ rails generate rspec:install ``` ### 哪些可以用 ```bash $ rails g ``` :::info ```bash Rspec: rspec:channel rspec:controller rspec:feature rspec:generator rspec:helper rspec:install rspec:integration rspec:job rspec:mailbox rspec:mailer rspec:model rspec:request rspec:scaffold rspec:system rspec:view ``` ::: ## scenario ## factory_bot ## 書 * rspec everyday * pragmatic bookshelf(書商) * packt(書商) ## AWS/Lindo/DigitalOcean/fly.io/heroku ## gandi https://www.gandi.net/zh-Hant ## CI/CD ### github actions ### private docker registry > 非公開的 ### gitlab flow ### jenkins ## github lydia > 面試題 ## javascript ### tag template function ```javascript= tagFucnction`string text ${xxx} yyy` ```