Rails moves reading_request? method from the DatabaseSelector to the DatabaseSelector::Resolver class so that we can override the method in custom Resolver.
Rails is continuously adding convenience to make active record queries more flexible. Now, Rails has added support to use aliased attributes with insert/upsert_all.
The connected_to block no longer throws an ArgumentError when called without a role parameter so as to pave the way for a more simplified and buildable syntax.
By default, foreign key constraints in PostgreSQL are checked after each statement. This works for most use cases but becomes a major limitation when creating related records before the parent record is inserted into the database.
