Question

Here is my code:

class UserTopicVisit < ActiveRecord::Base
  belongs_to :user
  belongs_to :topic

  def self.log_last_user_topic_visit(user_id, topic_id)
    visit = UserTopicVisit.find_or_create_by_user_id_and_topic_id(user_id, topic_id)
    visit.update_attributes!(:last_visit => Time.now.to_formatted_s(:db))
  end
end

Which is self-explainig.

The problems is: I need to be able to update object attribute without transaction, by simple mysql query. How can I accomplish that using activerecord?

Answer 1

Maybe you are looking for update-column

Updates a single attribute of an object, without calling save

• Validation is skipped.
• Callbacks are skipped.
• updated_at/updated_on column is not updated if that column is available.