Rails 7.0 Added ActiveRecord::Base#previously_persisted? method
June 07, 2021
Rails 7 introduced a new method to ActiveRecord::Base called previously_persisted?.
This method checks whether a deleted ActiveRecord instance was previously existing in database.
Let's see this method in action:
## Before
user = User.create!(email: 'info@scriptday.com')
user.destroy!
user.new_record? && user.destroyed?
#=> true
## After
new_user = User.new
new_user.destroy!
new_user.previously_persisted?
#=> false
existing_user = User.create!(email: 'info@scriptday.com')
User.exists?(existing_user.id)
#=> true
existing_user.destroy!
existing_user.previously_persisted?
#=> true
previously_persisted? method is just a replacement for
!existing_user.new_record? && existing_user.destroyed?
ActiveRecord::Base#previously_persisted? was added with this pull request.
Share feedback with us at:
info@scriptday.com