require_relative'boot'require'rails/all'# Require the gems listed in Gemfile, including any gems# you've limited to :test, :development, or :production.Bundler.require(*Rails.groups)modulexxxxxxclassApplication<Rails::Application# Initialize configuration defaults for originally generated Rails version.config.load_defaults5.2#ここからconfig.time_zone='Asia/Tokyo'#日本時間設定config.i18n.default_locale=:ja#日本語設定config.i18n.load_path+=Dir[Rails.root.join('config','locales','**','*.{rb,yml}').to_s]#起動時にja.ymlを読み込みさせる#ここまでを追加#-省略-endend
group :development, :test do
# Call 'byebug' anywhere in the code to stop execution and get a debugger console
gem 'byebug', platforms: [:mri, :mingw, :x64_mingw]
#ここに、Rspecをはじめとするテストgemを記す
gem 'rspec-rails'
gem 'capybara', '>= 2.15'
gem 'selenium-webdriver'
gem 'webdrivers'
gem 'factory_bot_rails'
gem 'rubocop-airbnb'#←リンター
end
$ rails routes
Prefix Verb URI Pattern Controller#Action
signin GET /signin(.:format) devise_token_auth/sessions#new
POST /signin(.:format) devise_token_auth/sessions#create
signup POST /signup(.:format)users#create
update PUT /update(.:format)users#update
$ rails routes
Prefix Verb URI Pattern Controller#Action
signin GET /signin(.:format) devise_token_auth/sessions#new
POST /signin(.:format) devise_token_auth/sessions#create
signup POST /signup(.:format)users#create
update PUT /update(.:format)users#update
今回は、Ruby on Rails6 でデーターベースのテーブルを作成する方法を忘却録として残します。
モデルとテーブルを作成する方法
bin/ ・・・ は Linux の開発環境で使用します。
(私はMAC{Unix}での開発環境で不要な文字ですが、知識として持っておくといいと思います。)
また、テーブル名前は "Form" の様に 頭文字を大文字にすると良いです。
モデルと1種類のカラムの作成
コマンド
$bin/rails g model Smple_form title:string
$bin/rails g model デーブル名 カラム名:データ型
or
$bin/rails generate model Smple_form title:string
$bin/rails generate model デーブル名 カラム名:データ型
モデルと複数のカラムの作成
コマンド
$bin/rails g model Smple_form description:text title:string
$bin/rails g model デーブル名 カラム名:データ型 カラム名:データ型
or
$bin/rails g generate Smple_form description:text title:string
$bin/rails g generate デーブル名 カラム名:データ型 カラム名:データ型
FROM ruby:2.7RUN apt-get update -qq&& apt-get install-yRUN mkdir /myapp
WORKDIR /myappCOPY Gemfile /myapp/GemfileCOPY Gemfile.lock /myapp/Gemfile.lockRUN bundle install# Add a script to be executed every time the container starts.COPY entrypoint.sh /usr/bin/RUN chmod +x /usr/bin/entrypoint.sh
ENTRYPOINT ["entrypoint.sh"]
次にrailsをインストールするためのGemfileを用意
source 'https://rubygems.org'
gem 'rails', '~>5'
空のGemfile.lockを作る
touch Gemfile.lock
Dockerfileに記載されているentrypoint.shを作る
entrypoint.sh
#!/bin/bashset-e# Remove a potentially pre-existing server.pid for Rails.rm-f /myapp/tmp/pids/server.pid
# Then exec the container's main process (what's set as CMD in the Dockerfile).exec"$@"
$ ruby -e 'Regexp.compile("(.)"*32767)'
#=> 何も起きない
$ ruby -e 'Regexp.compile("(.)"*32768)'
#=> RegexpErrorが発生する。メッセージは次の通り
#=> `initialize': too many capture groups are specified:
def fizz_buzz
num = 1
while num <= 100 do
if num % 15 == 0
puts "FizzBuzz"
elsif num % 3 == 0
puts "Fizz"
elsif num % 5 == 0
puts "Buzz"
else
puts num
end
num = num + 1
end
end
fizz_buzz
というのが正解だったけど、
rubocopを使ったところ、
def fizz_buzz
num = 1
while num <= 100
if (num % 15).zero?
puts 'FizzBuzz'
elsif (num % 3).zero?
puts 'Fizz'
elsif (num % 5).zero?
puts 'Buzz'
else
puts num
end
num += 1
end
end
fizz_buzz
An isogram is a word that has no repeating letters, consecutive or non-consecutive. Implement a function that determines whether a string that contains only letters is an isogram. Assume the empty string is an isogram. Ignore letter case.
An isogram is a word that has no repeating letters, consecutive or non-consecutive. Implement a function that determines whether a string that contains only letters is an isogram. Assume the empty string is an isogram. Ignore letter case.
Error: Refusing to uninstall /usr/local/Cellar/ruby-build/20200926
because it is required by rbenv, which is currently installed.
You can override this and force removal with:
brew uninstall --ignore-dependencies ruby-build
