Relationship insert problem

Rails
1

Hey all

im trying to do somthing like this…

if request.post?
  @customer = CustomerAnonymous.new(params[:customer])
  @customer.customer_addresses.new(params[:delivery])
end

However, the validation on my CustomerAnonymous model is being invoked
no problem, but my CustomerAddress model validation isnt, any ideas or
work arounds for this?

Is this even the best way to be inserting data into multiple tables from
a single form?

Cheers

Tim

2

Tim P. wrote:

Hey all

im trying to do somthing like this…

if request.post?
  @customer = CustomerAnonymous.new(params[:customer])
  @customer.customer_addresses.new(params[:delivery])
end

However, the validation on my CustomerAnonymous model is being invoked
no problem, but my CustomerAddress model validation isnt, any ideas or
work arounds for this?

Is this even the best way to be inserting data into multiple tables from
a single form?

Cheers

Tim

Tim,

I’m assuming that you’ve got a model called CustomerAddress and that a
CustomerAnonymous has_one CustomerAddress, in which case I think you
need something like this (but I’m learning too…)

if request.post?
@customer = CustomerAnonymous.new(params[:customer])
@customer.customer_addresses =
CustomerAddress.new(params[:delivery])
# Assuming that @customer.save is coming here or soon after…
end

I’m not sure if this is still the case, but the first edition of the
rails book says that the CustomerAddress save will fail silently if
anything goes wrong, so it recommends…

if request.post?
address = CustomerAddress.new(params[:delivery])
unless address.save! # <-- Throws an exception if save fails.
@customer = CustomerAnonymous.new(params[:customer])
@customer.customer_addresses = address
# Assuming that @customer.save is coming here or soon after…
end

Hope that helps.

3

Excellent, i have that first edition of the rails book but i couldnt
find i page on that for love nor money!!

Ill give that a whirl now!

Cheers

Tim

4

Tim P. wrote:

Excellent, i have that first edition of the rails book but i couldnt
find i page on that for love nor money!!

It’s in the section that describes one-to-one associations in the
active-record basics chapter, I don’t have the book with me to give you
the page number unfortunately.

5

Ok cool, i am getting somwhere now, however i think there is a problem
witht he fact that one customer could have many addresses… im getting
the error…

undefined method `each’ for #CustomerAddress:0x226cde0

out of

activerecord-1.14.2/lib/active_record/base.rb:1792:in method_missing' activerecord-1.14.2/lib/active_record/associations/association_collection.rb:118:inreplace’
activerecord-1.14.2/lib/active_record/associations.rb:895:in
customer_addresses=' #{RAILS_ROOT}/app/controllers/store/checkout_controller.rb:34:inanonymous_checkout’

Any suggestions? as one customer could have many different address on my
system.

My code currently looks like

if request.post?
  address = CustomerAddress.new(params[:delivery])
  if address.save!   # <-- Throws an exception if save fails.
    @customer = Customer.new(params[:customer])
    @customer.customer_addresses = address
    begin
      @customer.save!
    rescue => @error
      flash[:notice] = 'Could not be saved.'
    end
  else
    flash[:notice] = 'address not valid in model'
  end
end

Cheers

Tim

6

Interstingly…

if request.post?
  address = CustomerAddress.new(params[:delivery])
  unless address.save!   # <-- Record sucseeds validation, and

insertes a record in DB
@customer = Customer.new(params[:customer])
@customer.customer_addresses = address # <-- this is the
problem line where the ‘each’ exception is comming from.
begin
@customer.save!
rescue => @error
flash[:notice] = ‘Could not be saved.’
end
else
flash[:notice] = ‘address not valid in model’
end
end

7

Tim P. <rails-mailing-list@…> writes:

problem line where the ‘each’ exception is comming from.
begin
customer.save!
rescue => error
flash[:notice] = ‘Could not be saved.’
end
else
flash[:notice] = ‘address not valid in model’
end
end

for a has_one:
customer.customer_address = address

for a has_many:
customer.customer_addresses << address

where << is usually used to append something (address) to something else
(customer.customer_addresses)

Gareth

8

Excellent, i had manged to work out that it was using an array type
thing, as customer.customer_addresses[0] also inserted it in the correct
place, but the << solution is a far slicker example!

Many thanks for all you replys, this is what i ended up doing, well at
least its a start, i can add more error checking and presentaion from
here! Many thanks again!

Tim

if request.post?
  @customer = CustomerAnonymous.new(params[:customer])
  @customer.customer_addresses <<

CustomerAddress.new(params[:delivery])
begin
if @customer.save!
begin
@order = Order.update(session[:order_id], :customer_id =>
@customer.id)
rescue => @error
flash[:notice] = ‘Your order could not be updated.’
end
end
rescue => @error
flash[:notice] = ‘Please ensure you have filled in all the
required feilds (’ + @error + ‘)’
end
end