CODEWITHSUNDEEP
ruby-on-railsrubyactiverecord
wired00
wired00

Reputation: 14438

update_attributes with included array one to many

How in rails, do you call update_attributes() on a active record object, and have it create appropriate rows in one-to-many associated table based on an array param.

Is this possible? Or do I need to manually loop through that param's array and insert the many rows manually via create_record() etc?

To be clear, I might have users table with 1-to-many addresses. I want to call users.update_attributes() passing in the user details to be updated, but also provide an array of addresses mapping to the addresses table.

Upvotes: 0

Views: 78

Answers (1)

dimakura
dimakura

Reputation: 7655

In your User model:

model User
  has_many :addresses
  accepts_nested_attributes_for :addresses
end

now user can be created with this set of params

params = { user: {
  name: 'Dimitri', address_attributes: [
    { country: 'Georgia', city: 'Abasha', line: '35 Kacharava Str.' },
    { country: 'USA', city: 'Los Angeles', line: '10 Infinite Loop' },
    { country: '', _destroy: '1' } # this will be ignored
 ]
}}

User.create(params[:user])

more details can be found from here.

Upvotes: 2

Related Questions