Validation on association create

Rails
1

Hey

I’m having the worst time with 1 block of my app lol.

I have an address model with many validations.

I run this code on a 4 model form. If the params for the adresses are
blank (not valid) or just not valid the objects should not be created
and neither should the user or dealer. But both the user and dealer
are being saved and the addresses are throwing no validation errors. I
know the model is valid as i’ve unit tested it thoroughly. Why are the
validations not being processed on create. I’ve read the differences
for new-vs-create-vs-build but it sounds like build associations
should run validations.

  ActiveRecord::Base.transaction do

    params[:mailing_address] ||= []
    params[:billing_address] ||= []

    @dealer = Dealer.new(params[:dealer])
    @dealer.save!

    @user =  @dealer.users.new(params[:user])
    @user.roles << Role.find(3)
    @user.save!

    @dealer.addresses.create(params[:mailing_address])
    @dealer.addresses.create(params[:billing_address])
  end

cheers,
brianp

2

Can you supply the Dealer and User model validations so we can see
what they are doing?

When you say “If the params for the adresses are
blank (not valid) or just not valid the objects should not be created
and neither should the user or dealer” then this wouldn’t even work:

@dealer = Dealer.new(params[:dealer])
@dealer.save!

Since you are asking a dealer record to save but an address hasn’t
been added to it yet. That should bomb out regardless of
params[:mailing_address] being blank or not with what you said and
what you have written here.

3

You need to add a bang to the create methods for the addresses so that
an exception is raised. Rollbacks only happen if an exception is
raised.
ActiveRecord::Base.transaction do
# (…)
@dealer.addresses.create!(params[:mailing_address])
@dealer.addresses.create!(params[:billing_address])
end

Or you could wait with saving the dealer until all it’s children have
been initiated