Add clean error message when RAILS_ENV is unset (#15381)

By default, an unset RAILS_ENV is understood as RAILS_ENV=development.

However, this is not what most people expect, and due to development-only
dependencies, users are often left with confusing error messages.

This commit changes it so that an explicit RAILS_ENV is required, and
failing that, an error message is displayed before loading the app.

Co-authored-by: Claire <>
This commit is contained in:
ThibG 2020-12-20 18:05:03 +01:00 committed by GitHub
parent c4e860277d
commit 9734c9b6fe
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@ -1,3 +1,8 @@
unless ENV.key?('RAILS_ENV')
STDERR.puts 'ERROR: Missing RAILS_ENV environment variable, please set it to "production", "development", or "test".'
exit 1
ENV['BUNDLE_GEMFILE'] ||= File.expand_path('../Gemfile', __dir__)
require 'bundler/setup' # Set up gems listed in the Gemfile.