![]() Remove deprecated formats from ActionView::Template::Text. Remove deprecated formats from ActionView::Template::RawFile. Remove deprecated formats from ActionView::Template::HTML. Remove deprecated find_all_anywhere from ActionView::Resolver. Remove deprecated escape_whitelist from ActionView::Template::Handlers::ERB. Please refer to the Changelog for detailed changes. Change ActionDispatch::Response#content_type to return the full Content-Type header.Deprecate config.action_dispatch.return_only_media_type_on_content_type.Remove deprecated force_ssl at the controller level. Remove deprecated ActionDispatch::Http::ParameterFilter. 4.1 Removals 4.2 Deprecations 4.3 Notable changes 5 Action Pack Remove deprecated rake initializers tasks.ģ.2 Deprecations 3.3 Notable changes 4 Action Cable Remove deprecated support for using the HOST environment variable to specify the server IP. Remove deprecated server argument from the rails server command. Remove deprecated SOURCE_ANNOTATION_DIRECTORIES environment variable support from rails notes. Remove deprecated connection option in the rails dbconsole command. This can help you avoid timeouts and other performance issues in your application when destroying data. 2.5 Destroy Associations Asyncĭestroy associations async adds the ability for applications to destroy associations in a background job. Each subclass has its own table for additional attributes. This helps represent class hierarchies allowing the superclass to be a concrete class that is represented by its own table. 2.4 Delegated Typesĭelegated Types is an alternative to single-table inheritance. Your associations are loaded eagerly and stop N+1's before they happen. Strict loading associations allows you to ensure that all ![]() ![]() This is now fixed and horizontal sharding with Rails is available. Rails wasn't able to support horizontal sharding because models in Active Record could only have one connection per-role per-class. Rails 6.0 provided the ability to functionally partition (multiple partitions, different schemas) your database but wasn't able to support horizontal sharding (same schema, multiple partitions). Now in 6.1 if you set legacy_connection_handling to false in your configuration, Rails will allow you to switch connections for a single database by calling connected_to on the corresponding abstract class. In 6.0 if you switched to the reading role then all database connections also switched to the reading role. Rails 6.1 provides you with the ability to switch connections per-database. 2 Major Features 2.1 Per-database Connection Switching A list of things to watch out for when upgrading is Haven't and make sure your application still runs as expected before attemptingĪn update to Rails 6.1. You should also first upgrade to Rails 6.0 in case you If you're upgrading an existing application, it's a great idea to have good testĬoverage before going in.
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