May 19, 2020
Rails 6.1 adds rescue_from to ActionCable::Connection::Base
The `rescue_from` on ActionCable::Connection::Base allows us to intercept unhandled exceptions
May 11, 2020
Rails adds support for annotating HTML output with template file names.
Rails 6.1 has added support for adding HTML comments to the rendered output indicating where each template begins and ends.
May 11, 2020
Rails 6.1 supports `if_not_exists` option for adding index
Rails 6.1 added support for if_not_exists option to add_index. The if_not_exists provided to create_table also gets propagated to all indexes getting created in the create_table block.
Apr 29, 2020
Rails adds support for descending order in find_each, find_in_batches and in_batches
Rails 6.1 has added support for providing order(ASC/DESC) to batch processing methods like find_each, find_in_batches and in_batches instead of processing records in ascending order always.
Apr 20, 2020
Rails 6.1 add Enumerable#pick to complement Relation#pick
Adding pick to enumerable will enable us to call pick on loaded relations, unloaded relations, and plain enumerables interchangeably.
Apr 14, 2020
Rails 6.1 adds ActionCable::Channel#stream_or_reject_for
Rails 6.1 adds `ActionCable::Channel#stream_or_reject_for` to stream or reject connection based on presence of record
Apr 6, 2020
Rails has deprecated using return, break and throw to exit a transaction
Rails has disallowed using return, break and throw for exiting early from a transaction and having it committed.
Mar 24, 2020
Rails [attribute_name]_previously_changed? accepts :from and :to arguments
Rails Active Model Dirty method [attribute_name]_previously_changed? now accepts :from and :to arguments just like [attribute_name]_changed?
Mar 17, 2020
Rails has added support in Action Cable to unsubscribe from specific stream
Rails adds ActionCable::Channel#stop_stream_from and ActionCable::Channel#stop_stream_for methods to allow user to unsubscribe from specific stream
Feb 25, 2020
Rails has added strict loading mode to prevent lazy loading
Rails has added strict loading mode to prevent lazy loading of associations and help avoid N + 1 queries
