VueComponentからエレメントを取得する

コンポーネントのDOMを参照したい場合

this.$refs.myComponent.$el

で取得できる

qiita.com

rspecで時間操作をする

今まではtimecop使ってたんだけど、細かい制御までは特にする必要もなかったので ActiveSupport::Testing::TimeHelpers を使ってみる

spec/rails_helper.rbに以下を追記

# This file is copied to spec/ when you run 'rails generate rspec:install'
require 'spec_helper'
ENV['RAILS_ENV'] ||= 'test'
require File.expand_path('../config/environment', __dir__)
abort("The Rails environment is running in production mode!") if Rails.env.production?
require 'rspec/rails'
require 'webdrivers'
require 'email_spec'
require 'email_spec/rspec'

Dir[Rails.root.join('spec', 'support', '**', '*.rb')].sort.each { |f| require f }

# Checks for pending migrations and applies them before tests are run.
# If you are not using ActiveRecord, you can remove these lines.
begin
  ActiveRecord::Migration.maintain_test_schema!
rescue ActiveRecord::PendingMigrationError => e
  puts e.to_s.strip
  exit 1
end
RSpec.configure do |config|
  config.use_transactional_fixtures = true
  config.infer_spec_type_from_file_location!

  # Filter lines from Rails gems in backtraces.
  config.filter_rails_from_backtrace!
  # arbitrary gems may also be filtered via:
  # config.filter_gems_from_backtrace("gem name")
  
  config.include ActiveJob::TestHelper
  config.include ActiveSupport::Testing::TimeHelpers # <-- 追記
end

使いたい箇所で travel_toで囲む

context "Sample" do
  it  do
    travel_to('2020-1-1 0:00'.to_time) do
      # do test
    end
  end
end

aroundを使って広範囲に反映する

context "Sample" do
  around do |e|
    travel_to('2020-1-1 0:00'.to_time) { e.run }
  end

  it  do
    # do test
  end

  it  do
    # do test
  end
end

Rails5.2からRails6.0へアップグレードする

Gemを更新

 source 'https://rubygems.org'
 git_source(:github) { |repo| "https://github.com/#{repo}.git" }
 
-gem 'rails', '~> 5.2.4.3'
+gem 'rails', '~> 6.0.3.2'
 gem 'pg'
 gem 'puma'
 gem 'turbolinks', '~> 5'

bundle update rails

アップデートタスクを実行

rails app:update

アップデートタスクで気になる変更はそれほどなかったが、ActiveStorageを使っていた場合はデータベースのマイグレーションファイルが作らているのでdb:migrateをする必要がある 使ってなければマイグレーションファイルは消してもよさそう（消さなくても問題ないけど）

必要があれば追加された config/initializers/new_framework_defaults_6_0.rb を編集する

# Be sure to restart your server when you modify this file.
#
# This file contains migration options to ease your Rails 6.0 upgrade.
#
# Once upgraded flip defaults one by one to migrate to the new default.
#
# Read the Guide for Upgrading Ruby on Rails for more info on each option.

# Don't force requests from old versions of IE to be UTF-8 encoded.
# Rails.application.config.action_view.default_enforce_utf8 = false

# Embed purpose and expiry metadata inside signed and encrypted
# cookies for increased security.
#
# This option is not backwards compatible with earlier Rails versions.
# It's best enabled when your entire app is migrated and stable on 6.0.
# Rails.application.config.action_dispatch.use_cookies_with_metadata = true

# Change the return value of `ActionDispatch::Response#content_type` to Content-Type header without modification.
# Rails.application.config.action_dispatch.return_only_media_type_on_content_type = false

# Return false instead of self when enqueuing is aborted from a callback.
# Rails.application.config.active_job.return_false_on_aborted_enqueue = true

# Send Active Storage analysis and purge jobs to dedicated queues.
# Rails.application.config.active_storage.queues.analysis = :active_storage_analysis
# Rails.application.config.active_storage.queues.purge    = :active_storage_purge

# When assigning to a collection of attachments declared via `has_many_attached`, replace existing
# attachments instead of appending. Use #attach to add new attachments without replacing existing ones.
# Rails.application.config.active_storage.replace_on_assign_to_many = true

# Use ActionMailer::MailDeliveryJob for sending parameterized and normal mail.
#
# The default delivery jobs (ActionMailer::Parameterized::DeliveryJob, ActionMailer::DeliveryJob),
# will be removed in Rails 6.1. This setting is not backwards compatible with earlier Rails versions.
# If you send mail in the background, job workers need to have a copy of
# MailDeliveryJob to ensure all delivery jobs are processed properly.
# Make sure your entire app is migrated and stable on 6.0 before using this setting.
# Rails.application.config.action_mailer.delivery_job = "ActionMailer::MailDeliveryJob"

# Enable the same cache key to be reused when the object being cached of type
# `ActiveRecord::Relation` changes by moving the volatile information (max updated at and count)
# of the relation's cache key into the cache version to support recycling cache key.
# Rails.application.config.active_record.collection_cache_versioning = true

ディスク容量チェックの動作確認のため空ファイルを作る

サーバーにsshでつないで下記コマンドを実行すると10GBのファイルが作られる

dd if=/dev/zero of=tempfile1 bs=1M count=10000

countのとこの数字を変更して作りたいファイルのサイズは調整する

Railsのroutingでパラメータにドットを許容する

paramsにドットが入るとデフォルトではRouting Errorが返される

resources :users, constraints: {id: /[-a-zA-Z0-9.\-_\+]+/}

このように指定すると id にアルファベットとマイナスとドットとアンダーバーとプラスを許容できる

railsguides.jp

複数モデルでdeviseを利用するときに特定のモデルだけauthentication_keysを変更したい

ログインに利用するキーを変更するには通常 config/initializers/devise.rbの中の

  # ==> Configuration for any authentication mechanism
  # Configure which keys are used when authenticating a user. The default is
  # just :email. You can configure it to use [:username, :subdomain], so for
  # authenticating a user, both parameters are required. Remember that those
  # parameters are used only when authenticating and not when retrieving from
  # session. If you need permissions, you should implement that in a before filter.
  # You can also supply a hash where the value is a boolean determining whether
  # or not authentication should be aborted when the value is not present.
  # config.authentication_keys = [:email]

ここの config.authentication_keys = [:email]を変更すればよいが、ここを変更すると全てのモデルに反映されてしまう

特定のモデルだけの場合は以下のようにdeviseのoptionとして指定すればよい

class Customer < ApplicationRecord
  devise :database_authenticatable, authentication_keys: [:organization_id, :email]

  # 企業IDとメールアドレスでログインをする
  def self.find_for_database_authentication(warden_conditions)
    email = warden_conditions[:email].to_s.downcase.strip
    find_by(email: email, organization_id: warden_conditions[:organization_id])
  end
end

after_saveで項目の値が変わっていたかどうかを確認したい

saved_changeや(項目名)_previous_changeを使って変更を確認する

user = User.new
user.email = "test@example.com"
user.save
p user.email_previous_change

["", "test@example.com"]

class User < ApplicationRecord
  after_save :do_somothing_if_email_changed

  def do_somothing_if_email_changed
    if self.email_previous_change.uniq.length > 1
      # do something
    end
  end
end