DEV: Upgrade Rails to version 7.2

config/initializers/002-freedom_patches.rb

@@ -2,10 +2,7 @@
 
 # Multisite freedom patch defines RailsMultisite::DiscoursePatches.config which is used  by 200-first_middlewares.rb
 # Therefore it can not be postponed with .to_prepare
-RUN_WITHOUT_PREPARE = [
-  "#{Rails.root}/lib/freedom_patches/rails_multisite.rb",
-  "#{Rails.root}/lib/freedom_patches/rails_rack_logger_from_rails_7_2.rb",
-]
+RUN_WITHOUT_PREPARE = ["#{Rails.root}/lib/freedom_patches/rails_multisite.rb"]
 RUN_WITHOUT_PREPARE.each { |path| require(path) }
 
 Rails.application.reloader.to_prepare do

config/initializers/002-rails_failover.rb

@@ -44,7 +44,7 @@ if defined?(RailsFailover::ActiveRecord)
 
       # Test connection to the master, and trigger master failover if needed
       ActiveRecord::Base.connected_to(role: ActiveRecord.writing_role) do
-        ActiveRecord::Base.connection.active?
+        ActiveRecord::Base.connection.connect!.active?
       rescue PG::ConnectionBad, PG::UnableToSend, PG::ServerError
         RailsFailover::ActiveRecord.verify_primary(ActiveRecord.writing_role)
       end

config/initializers/100-flags.rb

@@ -3,7 +3,7 @@
 # On initialize, reset flags cache
 Rails.application.config.to_prepare do
   if Discourse.cache.is_a?(Cache) &&
-       !ActiveRecord::Base.connection.migration_context.needs_migration?
+       !ActiveRecord::Base.connection_pool.migration_context.needs_migration?
     Flag.reset_flag_settings!
   end
 end