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-rw-r--r--activerecord/lib/active_record/connection_handling.rb2
1 files changed, 2 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/connection_handling.rb b/activerecord/lib/active_record/connection_handling.rb
index b8fbb489b6..9a47edfba4 100644
--- a/activerecord/lib/active_record/connection_handling.rb
+++ b/activerecord/lib/active_record/connection_handling.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
module ActiveRecord
module ConnectionHandling
RAILS_ENV = -> { (Rails.env if defined?(Rails.env)) || ENV["RAILS_ENV"].presence || ENV["RACK_ENV"].presence }