self.update(id, attributes) — ActiveRecord::Base

self.update(id, attributes)

Updates an object (or multiple objects) and saves it to the database, if validations pass. The resulting object is returned whether the object was saved successfully to the database or not.

Parameters

id - This should be the id or an array of ids to be updated.
attributes - This should be a hash of attributes to be set on the object, or an array of hashes.

Examples

# Updating one record:
Person.update(15, :user_name => 'Samuel', :group => 'expert')

# Updating multiple records:
people = { 1 => { "first_name" => "David" }, 2 => { "first_name" => "Jeremy" } }
Person.update(people.keys, people.values)

Parameters

id req
attributes req

Source

# File activerecord/lib/active_record/base.rb, line 748
      def update(id, attributes)
        if id.is_a?(Array)
          idx = -1
          id.collect { |one_id| idx += 1; update(one_id, attributes[idx]) }
        else
          object = find(id)
          object.update_attributes(attributes)
          object
        end
      end

Defined in activerecord/lib/active_record/base.rb line 748 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActiveRecord::Base

Signature

Parameters

Examples

Parameters