method

replace

v5.0.0.1 - Show latest stable - 0 notes - Class: CollectionProxy

1.0.0
1.1.6
1.2.6
2.0.3
2.1.0
2.2.1
2.3.8
3.0.0
3.0.9
3.1.0
3.2.1
3.2.8
3.2.13
4.0.2 (0)
4.1.8 (0)
4.2.1 (0)
4.2.7 (0)
4.2.9 (0)
5.0.0.1 (0)
5.1.7 (0)
5.2.3 (0)
6.0.0 (0)
6.1.3.1 (4)
6.1.7.7 (0)
7.0.0 (0)
7.1.3.2 (-38)
7.1.3.4 (0)
What's this?

replace(other_array) public

Replaces this collection with other_array. This will perform a diff and delete/add only records that have changed.

class Person < ActiveRecord::Base
  has_many :pets
end

person.pets
# => [#<Pet id: 1, name: "Gorby", group: "cats", person_id: 1>]

other_pets = [Pet.new(name: 'Puff', group: 'celebrities']

person.pets.replace(other_pets)

person.pets
# => [#<Pet id: 2, name: "Puff", group: "celebrities", person_id: 1>]

If the supplied array has an incorrect association type, it raises an ActiveRecord::AssociationTypeMismatch error:

person.pets.replace(["doo", "ggie", "gaga"])
# => ActiveRecord::AssociationTypeMismatch: Pet expected, got String

Show source

# File activerecord/lib/active_record/associations/collection_proxy.rb, line 394
      def replace(other_array)
        @association.replace(other_array)
      end

replace

Related methods