軟體工程
Docker + Docker-compose 建立 Rails app 的開發與正式環境經驗分享
緣起 我喜歡做 Rails app prototype 放在 Digital Ocean，Rails app A 5.2.0 已經部署在上面，最近想再部署其他小型 Rails app 到同一臺機器上，但發現部署其他小型 Rails app B 到相同正
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緣起 我喜歡做 Rails app prototype 放在 Digital Ocean，Rails app A 5.2.0 已經部署在上面，最近想再部署其他小型 Rails app 到同一臺機器上，但發現部署其他小型 Rails app B 到相同正
read moreJavaScript 初學者必讀文章，用來熟悉 JS 觀念： 深入了解物件模型 https://developer.mozilla.org/zh-TW/docs/Web/JavaScript/Guide/Details_of_the_Object_Model 繼承與原型鍊 https://developer.mozilla.org/zh-TW/docs/Web/JavaScript/Inheritance_and_the_prototype_chain 箭頭函式 https://developer.mozilla.org/zh-TW/docs/Web/JavaScript/Reference/Functions/Arrow_functions __proto__, prototype 的差異 https://medium.com/@peterchang_82818/javascripter-%E5%BF%85%E9%A0%88%E7%9F%A5%E9%81%93%E7%9A%84%E7%B9%BC%E6%89%BF%E5%9B%A0%E5%AD%90-prototype-prototype-proto-object-class-inheritace-nodejs-%E7%89%A9%E4%BB%B6-%E7%B9%BC%E6%89%BF-54102240a8b4 查 js 和 css 在各瀏覽器的可用情況 https://caniuse.com/ bind() 用法 ，常見和 this 關鍵字
read moreIn Gemfile: # Use Capistrano for deployment group :development do gem 'capistrano' gem 'capistrano-passenger' gem 'capistrano-rails' gem 'capistrano-bundler' gem 'capistrano-rvm' gem 'highline' end In deploy.rb # Set rvm type #set :rvm\_type, :user set :rvm\_custom\_path, '/usr/local/rvm' # Remote server using rvm set :rvm\_ruby\_version, '[email protected]' In config/environment/production.rb config.require_master_key = true
read moreWhen I deploying a new rails 5.2.0 app to production machine, which has been the other rails 5.2.0 app there, I encounter a serious problem: ActiveSupport::MessageEncryptor::InvalidMessage: ActiveSupport::MessageEncryptor::InvalidMessage ArgumentError: invalid base64 /var/www/blogApp/shared/bundle/ruby/2.4.0/gems/activesupport-5.2.0/lib/active_support/core_ext/module/delegation.rb:271:in `method_missing' /var/www/blogApp/shared/bundle/ruby/2.4.0/gems/railties-5.2.0/lib/rails/application.rb:433:in `secret_key_base' Below are a part of debug info when I use capistrano to deploying a rails 5.2.0 app: DEBUG [b79779f0] Command: cd /var/www/blogApp/releases/20180802145508 && ( export RAILS_ENV="production" RAILS_GROUPS="" ; /usr/local/rvm/bin/rvm [email protected] do bundle exec rake assets:precompile )
read more都 2018 年了, MySQL 資料庫字元編碼請使用 utf8mb4，原因是從來沒有一個時代，能夠從手機如此容易輸入 emoji 表情符號。若是新開的案子就直接使用 utf8mb4 當作字元
read more假設兩個 Model : A, B, 一對一關係，例如 A has B, B belongs A，當要撈出 A 中有 B 且符合 在 B 的篩選欄位條件。A 是 Post 貼文, B 是 Comment 評論，A 和 B 的更新日期時間欄位都是
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Howard Lee is a Staff Software Engineer based in Taipei, specializing in frontend architecture, CI/CD, and production-quality engineering for enterprise web applications. With 13+ years of software development experience, Howard has worked across B2B SaaS, IoT energy-management platforms, online travel marketplaces, and Android applications. His work focuses on modernizing large frontend systems, improving delivery quality, and building reliable product workflows with automated testing, observability, and practical cloud/platform integration. Core Expertise Frontend architecture: Angular 5 to 19 modernization, TypeScript, JavaScript, React, Next.
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