Rails adds support for db:rollback:name for multiple database applicationsRails has added support for name option while rollbacking migration for multiple database application
Rails 6.1 add Enumerable#pick to complement Relation#pickAdding pick to enumerable will enable us to call pick on loaded relations, unloaded relations, and plain enumerables interchangeably.
Using Optimizer Hints in RailsOptimizer Hints allows us to control the query optimizer of a database system. Rails 6 has added support to provide Optimizer Hints.
Rails 6.1 adds ActionCable::Channel#stream_or_reject_forRails 6.1 adds `ActionCable::Channel#stream_or_reject_for` to stream or reject connection based on presence of record
Heredocs and how to use them in Ruby and RailsWhat are heredoc and different ways to use them in Ruby and Rails.
Rails has deprecated using return, break and throw to exit a transactionRails has disallowed using return, break and throw for exiting early from a transaction and having it committed.
Rails ActiveRecord::Relation#pick now uses already loaded resultsRails ActiveRecord::Relation#pick now uses already loaded results instead of making a new query everytime.
Rails [attribute_name]_previously_changed? accepts :from and :to argumentsRails Active Model Dirty method [attribute_name]_previously_changed? now accepts :from and :to arguments just like [attribute_name]_changed?
Rails - Allows to specify schema cache path in database configuration fileRails now exposes a new configuration for specifying the location of the schema cache file. This can be done in database.yml using schema_cache_path key.
Rails has added support in Action Cable to unsubscribe from specific streamRails adds ActionCable::Channel#stop_stream_from and ActionCable::Channel#stop_stream_for methods to allow user to unsubscribe from specific stream