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週刊Railsウォッチについて 各記事冒頭には🔗でパーマリンクを置いてあります: 社内やTwitterでの議論などにどうぞ 「つっつきボイス」はRailsウォッチ公開前ドラフトを（鍋のように）社内有志でつっついたときの会話の再構成です👄 お気づきの点がありましたら@hachi8833までメンションをいただければ確認・対応いたします🙇 TechRachoではRubyやRailsの最新情報などの記事を平日に公開しています。TechRacho記事をいち早くお読みになりたい方はTwitterにて@techrachoのフォローをお願いします。また、タグやカテゴリごとにRSSフィードを購読することもできます（例:週刊Railsウォッチタグ） 🔗Rails: 先週の改修（Rails公式ニュースより） 今回は以下のコミットリストのChangelog変更から見繕いました。 Comparing @{2
No Newline at End of File
Have you ever seen “No newline at end of file” in your git diffs? Us, too. ~/.dotfiles% git diff diff --git a/vimrc b/vimrc index 7e31913..a8b5f95 100644 --- a/vimrc +++ b/vimrc @@ -2,4 +2,4 @@ let configs = split(glob("~/.vim/configs/*"), "\n") for filename in configs execute 'source ' filename -endfor +endfor \ No newline at end of file Why does this happen and what does it mean? Try it in your
End-to-End Testing with RSpec Integration Tests and Capybara
Stability can become an issue as web applications evolve and grow – integration tests provide a great way to perform end-to-end tests that validate the application is performing as expected. Integration test with RSpec and Capybara When writing integration tests, try to model the test around an actor (user of the system) and the action they are performing. # spec/features/visitor_signs_up_spec.rb
Headless Capybara Feature Specs with Chrome
I’ve been a happy user of Capybara-WebKit for many years now, but its dependence on Qt can make it frustrating to install on macOS, particularly following macOS or Xcode updates. One such recent issue lead me to experiment with running my tests in Chrome via ChromeDriver and Selenium. I found the installation of ChromeDriver and Capybara-Selenium to be significantly faster than the installation of
Setting up CircleCI 2.0 for Rails
In July of 2017, CircleCI released their new platform, 2.0. It’s much more powerful and flexible, but it’s also more complex to get up and running with for Rails apps. Let’s walk through it… A Base Configuration The CircleCI configuration file is now in .circleci/config.yml. Initially, it should start looking something like this: --- version: 2 jobs: build: working_directory: ~/your-app-name steps
Ruby 2 Keyword Arguments
Ruby 2.0 introduced first-class support for keyword arguments: def foo(bar: 'default') puts bar end foo # => 'default' foo(bar: 'baz') # => 'baz'
ActiveRecord's where.not and nil
ActiveRecord’s where.not is a great tool that can make complex queries easier to read. I’m definitely a fan, but I ran into some behavior that surprised me the other day and wanted to share what I found. In my case, which I’ve slightly modified for this post, I had a users table with a favorite_animal column, which could potentially be NULL. I wanted to query for all users who didn’t have a strong
What's the Deal with Rails' Polymorphic Associations?
The latest big ActiveRecord feature to Rails has been polymorphic associations. Not very clear at first, I found out they’re easier to understand with a couple examples. A common one: class Person < ActiveRecord::Base has_one :address, :as => :addressable end class Company < ActiveRecord::Base has_one :address, :as => :addressable end class Address < ActiveRecord::Base belongs_to :addressable, :po
Use Factory Bot's build_stubbed for a Faster Test Suite
Want to speed up your test suite? Reduce the number of objects persisted to the database. With Factory Bot, this is really easy; instead of using build or create to instantiate your models with data, use build_stubbed! build_stubbed is the younger, more hip sibling to build; it instantiates and assigns attributes just like build, but that’s where the similarities end. It makes objects look like th
【翻訳】factory_bot 4.11で非推奨になった静的属性（static attributes） - Qiita
TL;DR（この記事のざっくりまとめ） factory_botの静的な属性は昔から混乱の原因になっており、開発チームのサポートの手間を増やしていた。 この混乱をなくすため、factory_bot 4.11で静的な属性を非推奨とし、バージョン5で完全に削除する。 新しいファクトリ定義では常に動的な属性（ブロックを伴う属性定義）を使う必要がある。 rubocop-rspec gemをインストールして以下のコマンドを実行すれば、一括で静的な属性を動的な属性に書き換えることができる。 rubocop \ --require rubocop-rspec \ --only FactoryBot/AttributeDefinedStatically \ --auto-correct はじめに 2018年8月16日にリリースされたfactory_bot 4.11から、ファクトリの定義で静的な属性（stat
Deprecating static attributes in factory_bot 4.11
With the dynamic version, every time you build a new robot you will get a new “Ralph” string for the name, whereas in the static version you will always get the same string (i.e. the same object in memory). Static attributes have been a source of much confusion over the years. A large number of our GitHub issues and Stack Overflow questions have been related to this confusion, and we have been thi
It's About Time (Zones)
This is the first article of a 2-part series. The second article is about a case study in multiple time zones. Ruby provides two classes to manage time: Time and DateTime. Since Ruby 1.9.3 there are fewer differences between the two libraries, with Time covering concepts of leapseconds and daylight saving time. For the rest of this article, Time will be used in all the examples. TZInfo is another
【翻訳】"Factory Girl"が"Factory Bot"に変わった理由（と移行手順） - Qiita
2017年10月に、Rubyのライブラリ(gem)である"Factory Girl"が"Factory Bot"に変わりました。 名前が変わった理由が以下のページに記載されていたので、翻訳してみます。 プロジェクト名の歴史 このライブラリはもともと2008年に"Factory Girl"という名前でリリースされました。 この名前を選んだ理由は書籍「デザインパターン」に載っていたファクトリメソッドパターンとオブジェクトの母（Object Mother）パターンに従っていたことと、ローリング・ストーンズに同じ名前の曲があったためです。 "Factory Girl"という名前はこのライブラリの存在を知った一部の開発者を混乱させました。また、不快で問題があるように感じる人々もいました。そのため、2017年10月に私たちはこのライブラリの名前を"Factory Bot"に変更しました。 （翻訳ここま
Update Your Gems Early and Often
It’s surprising how quickly time can get away from us. Updated versions of Ruby gems are released all the time. If we don’t keep our applications up-to-date with the latest released versions of their dependencies, we may end up with applications that rely on gems with known vulnerabilities, bugs, or deprecated features. I use the following strategy on a regular basis to keep my applications up-to-
Acceptance Tests with Subdomains
You’re excited about building a new application which allows users to sign up and host their own blog. You decide that each blog will have their own space by providing a subdomain. Let’s start off with a feature spec. require "rails_helper" feature "user views a blog" do scenario "homepage" do blog = create( :blog, subdomain: "bobloblaw", title: "Bob Loblaw's Law Blog", description: "Welcome to my
Test Rake Tasks Like a BOSS
Testing Rake tasks is one of the most painful things I do as a Ruby developer. Even after extracting all the code out into a separate class (which helps a lot), I still want to make sure I test that the right classes got called correctly with the right arguments. I wanted the subject to be the task, where I could call invoke, check its prerequisites, etc. describe "cron:hourly" do its(:prerequisit
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