Hi,
I'd like to understand how to manage newforms save when coping with
a form
that should edit both heading info and details. As an example let's
think
at an invoice splitted between invoice_headings/invoice_detail in a
way similar to the following:
class InvoiceHeading(Model):
company = CharField(max_length=10)
date = DateField()
...
class InvoiceDetail(Model):
invoice = ForeignKey(InvoiceHeading)
qty = integerField()
description = CharField(max_length=50)
Let suppouse that we are only interested in a form that allows us to
edit 3
invoice rows. A form could resamble this one:
class InvoiceForm(form_for_model()):
def __init__(self):
opts = {'required' : False}
for row in range(3):
self.fields['row_%s_qty' % (row)] = IntegerField(**opts)
self.fields['row_%s_descr' % (row)] = CharField(maxlength=50,
**opts)
Now how should I define save()? I tried something similar:
def save(self):
self.invoice = super(InvoiceForm, self).save()
for row in range(3):
InvoiceDetail(qty=self.clean_data['row_%s_qty' % row],
description=self.clean_data['row_%s_descr'
%row],).save()
This works when I create an object but how should I define it to
make it
able to update the object. This would just insert new rows each
time.
Should I use get_or_create? Is there a sample code for this kind of
compound form?
Thanks in advance
*:-)
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