Rails
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.Using Optimizer Hints in Rails
Optimizer 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_for
Rails 6.1 adds `ActionCable::Channel#stream_or_reject_for` to stream or reject connection based on presence of recordHeredocs and how to use them in Ruby and Rails
What are heredoc and different ways to use them in Ruby and Rails.
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.Rails ActiveRecord::Relation#pick now uses already loaded results
Rails ActiveRecord::Relation#pick now uses already loaded results instead of making a new query everytime.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?
Rails - Allows to specify schema cache path in database configuration file
Rails 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 stream
Rails adds ActionCable::Channel#stop_stream_from and ActionCable::Channel#stop_stream_for methods to allow user to unsubscribe from specific streamEager loading Active Storage models to avoid N+1 issues
Removing N+1 queries when we access the Active Storage attachments associated with an ActiveRecord model.