app/models/lock.rb
class Lock < ApplicationRecord
belongs_to :user
before_save :set_locked_until
def locked?
locked_until > Time.current
end
def set_locked_until
self.locked_until = lock_time if too_many_tries?
end
def lock_time
Time.current + (2**tries).minutes
end
def too_many_tries?
tries > 0 && tries % Lock.max_tries == 0
end
def self.increase_tries(user)
find_or_create_by!(user: user).increment!(:tries).save!
end
def self.max_tries
5
end
end