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rails で `development?` を維持したまま新しい環境を追加したいとき

Last updated at Posted at 2021-09-07

新しく環境を追加したい場合(staging とか)はこちらの方法でできるけど、
https://qiita.com/yusabana/items/a1f4fe2c37b20db2a3f6

Rails.env.development? とか Rails.env.staging?method_missing で実装されてるので、
https://github.com/rails/rails/blob/v6.1.4/activesupport/lib/active_support/string_inquirer.rb#L28

例えば development と同等の環境を新しく development-foo-bar みたいに追加しようとしても、
Rails.env.development-foo-bar? とかやるとメソッド名にハイフンが使えないので syntax error になるし、
肝心の Rails.env.development?false のままになってしまうので期待通りにいかない。

ので、こんな感じで extend してやるといいかも。

config/initializers/00_force-env-development.rb
module ForceEnvDevelopment
  def development?
    true
  end
end

case Rails.env
when 'development-foo-bar' then
  Rails.env.extend ForceEnvDevelopment
end

っていう話。

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