first(*args)
Instance Public methods
Returns the first record, or the first n records, from the
collection. If the collection is empty, the first form returns
nil, and the second form returns an empty array.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 | class Person < ActiveRecord::Base has_many :petsendperson.pets# => [# #<Pet id: 1, name: "Fancy-Fancy", person_id: 1>,# #<Pet id: 2, name: "Spook", person_id: 1>,# #<Pet id: 3, name: "Choo-Choo", person_id: 1># ]person.pets.first # => #<Pet id: 1, name: "Fancy-Fancy", person_id: 1>person.pets.first(2)# => [# #<Pet id: 1, name: "Fancy-Fancy", person_id: 1>,# #<Pet id: 2, name: "Spook", person_id: 1># ]another_person_without.pets # => []another_person_without.pets.first # => nilanother_person_without.pets.first(3) # => [] |
Please login to continue.