"InterfaceError at /add/" when using 'satchmo_cart_add_verify'

[Thomas]

I get this error when following the example at http://www.satchmoproject.com/docs/dev/signals.html

(I have attached the error log to this post.)

The wording of the error is: "Error binding parameter 1 - probably unsupported type."

What am I doing wrong? I'm pretty sure my code is the same as the example.

Here is my code:

from satchmo_store.shop.exceptions import CartAddProhibited

from django.utils.translation import gettext_lazy as _

class ContactCannotOrder(CartAddProhibited):

    def __init__(self, contact, product, msg):

        super(ContactCannotOrder, self).__init__(product, msg)

        self.contact = contact

def can_user_buy(product, contact=None):

    return False # If I make this 'True' then obviously it works fine.

def veto_if_already_purchased(sender, cartitem=None, added_quantity=0, **kwargs):

    customer = kwargs['cart'].customer

    if can_user_buy(cartitem.product, customer):

        return True

    else:

        msg = _("You have already purchased this.")

        raise ContactCannotOrder(customer, cartitem.product, msg)

In localsite/models.py, I have added the following line:

signals.satchmo_cart_add_verify.connect(veto_if_already_purchased, sender=None)

Many thanks,

Thomas

[Thomas]

It seems the error is caused by this line:

  errors = [m for m in get_messages(request) if m.level == constants.ERROR]

That is from the 'get_product()' which I copied from

  src/satchmo/satchmo/apps/product/views/__init__.py

I am baffled. I don't have django's 'message levels' enabled. But why would the original version of get_product() work? where does the ".level" get set ?

Many thanks,

Thomas

[hynekcer]

The second error can be probably *temporary* fixed by
getattr(m, 'level', None) instead of m.level in order that you can
continue.

Can you reproduceit in a new project with the only modification
copied from the link above?

--Hynek

(http://www.satchmoproject.com/docs/dev/signals.html)

On 26 dub, 10:55, Thomas <tea.andr...@gmail.com> wrote:
> It seems the error is caused by this line:
>
>   errors = [m for m in get_messages(request) if m.level == constants.ERROR]
>
> That is from the 'get_product()' which I copied from
>   src/satchmo/satchmo/apps/product/views/__init__.py

> .