RailsのDBをMySQLへ #最初からMySQLを指定 #途中からMySQL
最初からMySQLを指定
rails newのときに､DBをMySQLに指定する｡
下記コマンドでデフォルトのDBMSがMySQLへ変わる｡
$bundle exec rails new . --database=mysql
または
$bundle exec rails new . -d mysql
※rails newコマンドにオプション(ハイフンより後ろを追加すればOK
※上記2種類のオプションのどちらが良いのかは調べていませんが､追々調べたいです｡
途中からDBをMySQLへ
※MySQLのインストールやセキュリティ設定？はすでに終わっているのを前提とします｡
Gemfileへ追記とconfig/database.ymlファイルを変更します｡
Gemfileへ追記
Gemfile
gem 'mysql2'
これで$bundle install
database.ymlファイルを編集
※変更前の内容と変更後の内容は､SQLiteでrails newしたときのdatabase.ymlの中身と､MySQLでrails newしたときのdatabase.ymlの中身をのせています｡
変更前
# SQLite version 3.x
# gem install sqlite3
#
# Ensure the SQLite 3 gem is defined in your Gemfile
# gem 'sqlite3'
#
default: &default
adapter: sqlite3
pool: <%= ENV.fetch("RAILS_MAX_THREADS") { 5 } %>
timeout: 5000
development:
<<: *default
database: db/development.sqlite3
# Warning: The database defined as "test" will be erased and
# re-generated from your development database when you run "rake".
# Do not set this db to the same as development or production.
test:
<<: *default
database: db/test.sqlite3
production:
<<: *default
database: db/production.sqlite3
変更後
# MySQL. Versions 5.1.10 and up are supported.
#
# Install the MySQL driver
# gem install mysql2
#
# Ensure the MySQL gem is defined in your Gemfile
# gem 'mysql2'
#
# And be sure to use new-style password hashing:
# https://dev.mysql.com/doc/refman/5.7/en/password-hashing.html
#
default: &default
adapter: mysql2
encoding: utf8
pool: <%= ENV.fetch("RAILS_MAX_THREADS") { 5 } %>
username: ユーザー名
password:パスワード
host: localhost
development:
<<: *default
database: プロジェクト名_development
# Warning: The database defined as "test" will be erased and
# re-generated from your development database when you run "rake".
# Do not set this db to the same as development or production.
test:
<<: *default
database: プロジェクト名_test
# As with config/secrets.yml, you never want to store sensitive information,
# like your database password, in your source code. If your source code is
# ever seen by anyone, they now have access to your database.
#
# Instead, provide the password as a unix environment variable when you boot
# the app. Read http://guides.rubyonrails.org/configuring.html#configuring-a-database
# for a full rundown on how to provide these environment variables in a
# production deployment.
#
# On Heroku and other platform providers, you may have a full connection URL
# available as an environment variable. For example:
#
# DATABASE_URL="mysql2://myuser:mypass@localhost/somedatabase"
#
# You can use this database configuration with:
#
# production:
# url: <%= ENV['DATABASE_URL'] %>
#
production:
<<: *default
database: プロジェクト名_production
username: プロジェクト名
password: <%= ENV['プロジェクト名_DATABASE_PASSWORD'] %>
Author And Source
この問題について(RailsのDBをMySQLへ #最初からMySQLを指定 #途中からMySQL), 我々は、より多くの情報をここで見つけました https://qiita.com/s56258/items/2b7a173616cfb27d0709著者帰属：元の著者の情報は、元のURLに含まれています。著作権は原作者に属する。
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