On Nov 2, 4:02 pm, rm <[EMAIL PROTECTED]> wrote:
> On Nov 2, 3:54 pm, RajeshD <[EMAIL PROTECTED]> wrote:
>
> > When you acquire a Customer newform instance in your view, you will be
> > able to modify the choices attribute of its domain field so that these
> > choices only contain the relevant domains that you mentioned you can
> > trivially derive knowing the request.user.
>
> Could you give an example of how to do this? That sounds like what I
> am after as well.
Sure. But I will assume that you've read the newforms documentation or
will be reading it to continue with the starter code below:
# First create a form call back that will allow you
# to have our custom choice field on the domain field
class CustomDomains(object):
def __init__(self, queryset):
self.queryset = queryset
def __call__(field, **kwargs):
if field.name == 'domain':
# the following single line is the whole point \
# of the solution we are building
return forms.ModelChoiceField(queryset=self.queryset)
else:
return field.formfield(**kwargs)
# The following goes into your view
# Scroll down to "def contact_edit(request, msg_id)" in the newforms
docs for
# the general idea of this view.
# http://www.djangoproject.com/documentation/newforms/#form-for-instance
# create a queryset that contains
# your domain choices for the request.user
your_list_of_reseller_ids = [left for you to populate]
valid_domains =
Domain.objects.filter(reseller__id__in=your_list_of_reseller_ids)
custom_domains_callback = CustomDomains(queryset=valid_domains)
if your_customer_instance is not None: # we are in update mode
CustomerForm = forms.form_for_instance(your_customer_instance,
formfield_callback=custom_domains_callback)
else: # we are creating a new customer
CustomerForm = forms.form_for_model(Customer,
formfield_callback=custom_domains_callback)
form = CustomerForm()
# run with this form following the examples in the newforms
documentations.
Note: I have not tested the above for errors but have used similar
patterns in my own code with no problems. Also, please mind the
indentation. If GoogleGroups screws it up, I hope you can put it back
together.
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