require"rails_helper"RSpec.describePost,:type=>:modeldocontext"with 2 or more comments"doit"orders them in reverse chronologically"dopost=Post.create!comment1=post.comments.create!(:body=>"first comment")comment2=post.comments.create!(:body=>"second comment")expect(post.reload.comments).toeq([comment2,comment1])endendend
#!/bin/shRBENV_VERSION=2.5.1 ruby -rcsv<<EOS
CSV.parse("\n", headers: %w(a)) do |row|
p row.empty? # true
end
EOS
RBENV_VERSION=2.6.4 ruby -rcsv<<EOS
CSV.parse("\n", headers: %w(a)) do |row|
p row.empty? # false
end
EOS
p row などでみてみると、2.5 ではフィールドの情報を持っていないのに対し、2.6 ではフィールドの情報を持っています。
#!/bin/shRBENV_VERSION=2.5.1 ruby -rcsv<<EOS
CSV.parse("\n", headers: %w(a)) do |row|
p row # #<CSV::Row>
p row.to_a # []
p row.to_hash # {}
end
EOS
RBENV_VERSION=2.6.4 ruby -rcsv<<EOS
CSV.parse("\n", headers: %w(a)) do |row|
p row # #<CSV::Row "a":nil>
p row.to_a # [["a", nil]]
p row.to_hash # {"a"=>nil}
end
EOS
#!/usr/bin/env ruby2.5## This file was generated by RubyGems.## The application 'wp2txt' is installed as part of a gem, and# this file is here to facilitate running it.#require'bundler/setup'# <- この1行を追記require'rubygems'version=">= 0.a"
group :development, :test do
# sqlite3 for development/test only ← 追記
gem 'sqlite3' ← 追記
# Call 'byebug' anywhere in the code to stop execution and get a debugger console
gem 'byebug', platforms: [:mri, :mingw, :x64_mingw]
# Adds support for Capybara system testing and selenium driver
gem 'capybara', '>= 2.15'
gem 'selenium-webdriver'
end
$ heroku login --interactive
heroku: Enter your login credentials
Email:
Password:
Herokuにログイン後、SSH鍵を追加
$ heroku keys:add
Found an SSH public key at /home/vagrant/.ssh/id_rsa.pub
? Would you like to upload it to Heroku?
Uploading /home/vagrant/.ssh/id_rsa.pub SSH key... done
$ rubocop sample.rb
Inspecting 1 file
C
Offenses:
sample.rb:6:7: C: Layout/AlignHash: Align the elements of a hash literal if they span more than one line.
b: 1
^^^^
1 file inspected, 1 offense detected
$ rubocop sample.rb --auto-correct
Inspecting 1 file
C
Offenses:
sample.rb:6:7: C: [Corrected] Layout/AlignHash: Align the elements of a hash literal if they span more than one line.
b: 1
^^^^
1 file inspected, 1 offense detected, 1 offense corrected
$ rubocop sample.rb
Inspecting 1 file
C
Offenses:
sample.rb:6:7: C: Layout/AlignHash: Align the elements of a hash literal if they span more than one line.
b: 1
^^^^
1 file inspected, 1 offense detected
$ rubocop sample.rb --auto-correct
Inspecting 1 file
C
Offenses:
sample.rb:6:7: C: [Corrected] Layout/AlignHash: Align the elements of a hash literal if they span more than one line.
b: 1
^^^^
1 file inspected, 1 offense detected, 1 offense corrected
docker-compose exec web bundle exec rails g model comment board:references name:strings comment:text
# rails g model モデル名 親テーブル名:references カラム名:型
# referencesによって「親テーブル名_id」という外部キーカラムが作成され、アソシエーションされる
出来上がったマイグレーションファイルは下記
comments.rb
class CreateComments < ActiveRecord::Migration[5.0]
def change
create_table :comments do |t|
t.references :board, foreign_key: true # 引数によって親テーブルにないidが保存できなくなる
t.string :name, null: false #引数によってnullの場合エラーとなる
t.text :comment, null: false
t.timestamps
end
end
end
マイグレートを実行し、DBにマイグレーション内容を反映
docker-compose exec web bundle exec rake db:migrate
docker-compose exec web rails g controller comments create destroy --skip-template-engine
# viewの作成をskipする
ルーティングの修正
rails g によって自動的にルーティングされるが、リソースベースルーティングに合わせて修正する。
routes.rb
Rails.application.routes.drawdo# For details on the DSL available within this file, see http://guides.rubyonrails.org/routing.htmlresources:boardsresources:comments,only: %i[create destroy]end
