custom_optimistic_locking

🦄 Customize Optimistic Locking Column

By default, Rails uses a lock_version column. You can override it to use custom naming or multiple locks across different concerns. This is helpful when you have versioned fields in the same table.

class Product < ApplicationRecord
  self.locking_column = :inventory_version
end

# Schema:
# t.integer :inventory_version, default: 0, null: false

Now ActiveRecord will increment inventory_version on update and raise ActiveRecord::StaleObjectError if another transaction updated the same record first.