Fix Rails 8.0 warnings 'to_time' behavior by config/application.rb

Author: yasulab

config/application.rb

@@ -32,5 +32,8 @@ class Application < Rails::Application
 
     # Fixture paths
     config.fixture_paths = [Rails.root.join('spec/fixtures')]
+
+    # Rails 8.0: `to_time` will always preserve the full timezone in Rails 8.1.
+    config.active_support.to_time_preserves_timezone = :zone
   end
 end

config/initializers/new_framework_defaults.rb

@@ -14,7 +14,7 @@
 
 # Make Ruby 2.4 preserve the timezone of the receiver when calling `to_time`.
 # Previous versions had false.
-ActiveSupport.to_time_preserves_timezone = true
+#ActiveSupport.to_time_preserves_timezone = true
 
 # Require `belongs_to` associations by default. Previous versions had false.
 Rails.application.config.active_record.belongs_to_required_by_default = false