create rails nested object in one swoop

Question

I need an api key to save a user, and I need a user_id to save an api_key... Can I do both at once?

user.api_key = ApkiKey.generate_token
user.save
user.api_key.user_id = user.id
user.api_key.save

Hardik · Accepted Answer · 2015-05-16 09:12:10Z

2

If the api_key has belongs_to relationship with user then following will work

user.api_key = ApkiKey.generate_token
user.api_key.user_id = user.id
user.save

the user.save will also trigger the user.api_key.save

answered May 16, 2015 at 9:12

Hardik

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TheJKFever · Accepted Answer · 2015-05-16 09:36:25Z

1

I ended up doing the following:

#api_key.rb
before_create :generate_access_token
def generate_access_token
    begin
        self.access_token = SecureRandom.hex
    end while self.class.exists?(access_token: access_token)
end

#user.rb
before_create do |user|
    user.api_key = ApiKey.create(user_id: user.id)
end

The problem was that I didn't think I could access user.id before I created the user, but apparently it works. Thanks for the heads up @Hardik

answered May 16, 2015 at 9:36

TheJKFever

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