method
destroy
v6.0.0 -
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Class: CollectionProxy
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- What's this?
destroy(*records)
public
Destroys the records supplied and removes them from the collection. This method will always remove record from the database ignoring the :dependent option. Returns an array with the removed records.
class Person < ActiveRecord::Base has_many :pets end person.pets.size # => 3 person.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.destroy(Pet.find(1)) # => [#<Pet id: 1, name: "Fancy-Fancy", person_id: 1>] person.pets.size # => 2 person.pets # => [ # #<Pet id: 2, name: "Spook", person_id: 1>, # #<Pet id: 3, name: "Choo-Choo", person_id: 1> # ] person.pets.destroy(Pet.find(2), Pet.find(3)) # => [ # #<Pet id: 2, name: "Spook", person_id: 1>, # #<Pet id: 3, name: "Choo-Choo", person_id: 1> # ] person.pets.size # => 0 person.pets # => [] Pet.find(1, 2, 3) # => ActiveRecord::RecordNotFound: Couldn't find all Pets with 'id': (1, 2, 3)
You can pass Integer or String values, it finds the records responding to the id and then deletes them from the database.
person.pets.size # => 3 person.pets # => [ # #<Pet id: 4, name: "Benny", person_id: 1>, # #<Pet id: 5, name: "Brain", person_id: 1>, # #<Pet id: 6, name: "Boss", person_id: 1> # ] person.pets.destroy("4") # => #<Pet id: 4, name: "Benny", person_id: 1> person.pets.size # => 2 person.pets # => [ # #<Pet id: 5, name: "Brain", person_id: 1>, # #<Pet id: 6, name: "Boss", person_id: 1> # ] person.pets.destroy(5, 6) # => [ # #<Pet id: 5, name: "Brain", person_id: 1>, # #<Pet id: 6, name: "Boss", person_id: 1> # ] person.pets.size # => 0 person.pets # => [] Pet.find(4, 5, 6) # => ActiveRecord::RecordNotFound: Couldn't find all Pets with 'id': (4, 5, 6)