It’s destroy and destroy_all methods, like
user.destroy
User.find(15).destroy
User.destroy(15)
User.where(age: 20).destroy_all
User.destroy_all(age: 20)
Alternatively you can use delete and delete_all which won’t enforce :before_destroy and :after_destroy callbacks or any dependent association options.
User.delete_all(condition: 'value')will allow you to delete records
without a primary key
Note: from @hammady’s comment, user.destroy won’t work if User model has no primary key.
Note 2: From @pavel-chuchuva’s comment, destroy_all with conditions and delete_all with conditions has been deprecated in Rails 5.1 – see guides.rubyonrails.org/5_1_release_notes.html