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Multiple models display form

Author:
lbolognini
Posted:
July 18, 2007
Language:
Python
Version:
.96
Score:
-2 (after 2 ratings)

You have an update form with many fields and want to populate it with data coming from multiple models. 

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def change_house_let(request, object_id):
    if request.method == "POST":
        new_data = request.POST.copy()
        form = HouseLetForm(new_data)
        
        if form.is_valid():
            pass
        else:
            pass
    else:
        h = HouseLet.objects.get(pk=object_id)
        p = Property.objects.get(pk=object_id)
        a = Ad.objects.get(pk=object_id)
        
        d = {}
        
        d.update(vars(h))
        d.update(vars(p))
        d.update(vars(a))
        
        context = dict(form=HouseLetForm(initial=d))

    return render_to_response("house_let.html", context)

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Comments

miracle2k (on July 18, 2007):

If you're models are related to each other via a Foreignkey, beware. They're (autoincremented) primary keys could in theory be out of sync. I had the same thing just happen to me.

You may want to consider doing something like this instead:

p = Property.objects.get(pk=object_id) h = HouseLet.objects.get(property=p.id)

Or differently, whatever your exact relationships are.

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