Rails migration: change vs up/down 怎麼選
When change is safe, when you must write up/down explicitly
TAG INDEX / Rails
Rails
所有標記為「Rails」的工程筆記。
別在 Docker CMD 裡跑 migration
Why alembic upgrade head / rails db:migrate in CMD deadlocks multi-replica deploys
CarrierWave 在 CI 上亂打 GCS 的坑
Class-level storage :gcloud overrides global test config. Force :file in specs.
用 ActiveSupport::MessageEncryptor 加密 per-tenant API key
Encrypt tenant secrets at rest without extra gems
MySQL NULL distinct 與 paranoid 的 unique index 陷阱
Why [shop_id, provider, deleted_at] unique does not block duplicate active rows
Rails uniqueness 的兩個經典坑：Race Condition 與 Replica Lag
Why validates_uniqueness_of is not enough, and how to retry safely
Rails migration 踩雷：MySQL int vs bigint FK
Why t.references + add_foreign_key can fail on legacy MySQL schemas
Email OTP
Verify email by otp
Rails 特殊字元過濾(白名單)
使用 Rails 過濾特殊字元方法
rails use select_tag
Rails select_tag 介紹以及使用ajax方式不使用remote: true
show devise gem files
顯示 devise 有關的檔案
HTML異步加載Script
rails use async
Rails 檢查代碼助手
rails check code gem
Ruby use email html css gem
Ruby 使用寄信Email-HTML CSS樣式的gem
ROR use Array(params[:ids])
Ruby 批次送出(使用Array(params[:ids]))