method

update

v2.3.8 - Show latest stable - Class: ActiveRecord::Base

update(id, attributes)

public

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)

# File activerecord/lib/active_record/base.rb, line 747
      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

1Note

collection update

mihserf · Aug 17, 20082 thanks

in the FirmsController

@firm.people.update(params[:people].keys,params[:people].values)

in the View