method

update_columns

v4.2.1 - Show latest stable - 0 notes - Class: ActiveRecord::Persistence

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What's this?

update_columns(attributes) public

Updates the attributes directly in the database issuing an UPDATE SQL statement and sets them in the receiver:

user.update_columns(last_request_at: Time.current)

This is the fastest way to update attributes because it goes straight to the database, but take into account that in consequence the regular update procedures are totally bypassed. In particular:

Validations are skipped.
Callbacks are skipped.
updated_at/updated_on are not updated.

This method raises an +ActiveRecord::ActiveRecordError+ when called on new objects, or when at least one of the attributes is marked as readonly.

Show source

# File activerecord/lib/active_record/persistence.rb, line 290
    def update_columns(attributes)
      raise ActiveRecordError, "cannot update a new record" if new_record?
      raise ActiveRecordError, "cannot update a destroyed record" if destroyed?

      attributes.each_key do |key|
        verify_readonly_attribute(key.to_s)
      end

      updated_count = self.class.unscoped.where(self.class.primary_key => id).update_all(attributes)

      attributes.each do |k, v|
        raw_write_attribute(k, v)
      end

      updated_count == 1
    end

update_columns

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