Hi James, Thanks again for responding. I didn’t post my actual models as they are quite large and my problem is more about understanding proper technique than anything. Self.name did fix my immediate problem thanks, however I am really curious about your last paragraph … how can I tie the customer directly to the service order ? .. I have no idea how I might do it in Django.
C. From: django-users@googlegroups.com [mailto:django-users@googlegroups.com] On Behalf Of James Schneider Sent: Tuesday, June 02, 2015 6:01 PM To: django-users@googlegroups.com Subject: Re: new to Django having models/views/templates question Posting the actual model code will probably help. Your template has this: item.customer_location.name <http://item.customer_location.name/> But you specified the issue later as this: item.customer_location.customer The former won't work per your summarized model definitions. The Location model has no attribute called 'name'. The latter will work only if your __str__() function is encoding the data correctly. The reason you are getting a recursion error is because of the 'unicode(self)' (which I'm assuming is part of your model's __str__() definition). You need to change that to something like unicode(self.name <http://self.name> ). I'm not even sure if the unicode() call is even necessary (haven't done a ton of Python 3 yet). As far as referring to the Customer name, you can do {{ item.customer_location.customer.name <http://item.customer_location.customer.name> }} Have you thought about tying in the customer directly to the service order? It shouldn't be an issue to have a customer tied to both the location and the service order. While it'll work the way you have it, your lookups will become more complicated (and expensive from a processing perspective) since you are forcing a lookup across multiple tables. It may not agree with your business process, though. Just a thought. -James On Jun 2, 2015 11:57 AM, "Chris Strasser" <cstrasse...@gmail.com <mailto:cstrasse...@gmail.com> > wrote: Hi James thanks for the response... this line: <td>{{item.customer_location.customer}}</td> ..... worked this morning and all last week now gives this error: RuntimeError at /sto/ maximum recursion depth exceeded while calling a Python object Request Method: GET Request URL: http://10.0.0.102:8080/sto/ Django Version: 1.8 Exception Type: RuntimeError Exception Value maximum recursion depth exceeded while calling a Python object I can reproduce the encoding error but i forget how to get there at the moment ... On Tuesday, June 2, 2015 at 2:00:22 PM UTC-4, Chris Strasser wrote: Hi am plugging away at learning Django and have done well so far (thanks to great documentation and Stackoverflow) but I have run into a problem that i cant seem to figure out. I have a model that refers to another model that refers to another model. example : Class ServiceOrder id -integer customer location = foreign key to location def __str__(self): return self.stid class Location: id -integer address -char customer- foreign key to customer q= '%s %s %s %s ' %(self.addr1, self.addr2, self.city, self.country) return unicode(q).encode('utf-8') Class Customer id=int name- char return unicode(self).encode('utf-8') I have a template that lists the service orders view is below: def serviceorder_list(request, status = 'Closed'): ist = ServiceOrder.objects.filter(status = status, stid__lte=20239).select_related('customer_location__customer') #stid__lte 20239 to fix database error ... i have existing data that has its own issues... count = order_list.count() context ={'list': sto_list, 'count': count} return render(request, 'order/listview.html', context) in my listview.html {% for item in list %} {% if item.project %} <td><a href="{{ item.stid }}">{{item.stid}}</a></td> <td>{{item.project}}</td> <td>{{item.customer_location.name <http://item.customer_location.name> }}</td> ---------------------- 2 questions here 1) it throws an error on customer names that have accents etc ... <td>{{item.notes}}</td> 2) i am confused about how to properly referenece the customer name or anything else that is not in the Service order model. <td>{{item.person_responsible}}</td> <td>{{item.entrydate|date:'M-d-y'}}</td> <td>{{item.status}}</td> <td>{{item.billing}}</td> </tr> I have read the docs many times and the more i read the more i know that i don't know ... any help would be appreciated Thanks -- You received this message because you are subscribed to the Google Groups "Django users" group. 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