Rails

軟體工程 Deploy problems when upgrading to rails 5.2.0 from 4.2.5

By Howard Lee 28 April 2018

Capistrano 部署 production 環境從 Rails 4.2.5.1 升級到 Rails 5.2.0 的環境時遭遇了兩個問題 Cannot find gem bundler >= 0.a Solution for your production environment: reinstall rvm and bundler gem rvm implode rvm get head rvm reload rvm reset rvm use 2.4.1 rvm gemset create rails5.2.0 rvm use [email protected] --default gem install bundler which bundle modify config/deploy.rb content and

軟體工程 Vim editor config for my php, ruby and rails environment

By Howard Lee 02 April 2017

I use many plugin with VIM to boost development when I writing and debugging programs, which are written through PHP and Ruby languages. Also there are few plugin for SASS, RSpec and Javascript. Below are configurations for my VIM editor and Vundle. There must some corresponded software be installed in the computer first and then these settings will work. nnoremap means normal mode in VIM. Usage of <silent> tag is

軟體工程 No routes matches ‘/users/sign_out’ of Devise gem using jquery-migrate-min.js in Rails 4

By Howard Lee 19 April 2016

Situation: After trying to use slick plugin of jquery using log-in user, I want to sign out. The screen shows 'No routes matches '/users/sign_out' ' when I click the link of sign-out. Before trying slick plugin, /users/sign_out route of devise gem works as normal. Cause: The addtional js jquery-migrate-min, which required for slick plugin, makes rails misunderstood original route for /users/sign_out . Environment: Rails 4.2.5.1, Devise 3.5.5, Jquery-migrate-rails 1.2.1 Solution:

軟體工程 Configurations and programming examples about Grape, Doorkeeper and Wine_bouncer in a rails 4 app

By Howard Lee 17 April 2016

This article works for both of production and development environment and not like other articles only work for development. The tested environment are Rails 4.2.5.1, Ruby 2.3.0, Doorkeeper 3.1.0, Grape 0.14.0, Grape-kaminari 0.1.8, Wine_Bouncer 0.5.1 and Devise 3.5.5 . 1. Sample configuration for Grape gem in Rails app projects. 列出Grape gem的設定檔範例 In config/application.rb, add below two

軟體工程為 Postgres 全文搜尋加速 - 在表格加上 tsvector

By Howard Lee 24 March 2016

寫了一陣子的英文部落格文章，這篇用中文書寫調劑一下。Postgres 在 8.3 版之後的版本開始提供全文搜尋功能，資料表上若沒加上 tsvector 的欄位，每次查詢

軟體工程 Inquiry Rails ActiveRecord records between two dates

By Howard Lee 23 March 2016

Follow below code for inquiring ones in ActiveRecord between two dates: YourModel.find(:date => somenumber.days.ago..Date.today) # or YourModel.find(:created_at => yourNumber.years.ago..Date.today) # or YourModel.find(:updated_at => yourVariable.months.ago..Date.yesterday) Aboved code are modified from a post at stackoverflow.com. Reference: http://stackoverflow.com/questions/2381718/rails-activerecord-date-between

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