Yes, I think it's {% include %} rendering an empty string if there's an
exception. In Django 1.9, we added a logger for these exceptions to make
debugging easier:
https://docs.djangoproject.com/en/stable/topics/logging/#django-template.
On Friday, March 11, 2016 at 6:30:35 AM UTC-5, Federico Capoano wrote:
>
> This never happened to me and I find it very strange. Maybe it's a bug or
> maybe it's the intended behaviour, but I find it REALLY strange.
>
> Consider a widget which, for some reason, raises an exception:
>
> class CoolWidget(AdminTextareaWidget):
> def render(self, name, value, attrs={}):
> WRONG()
> return super(JsonSchemaWidget, self).render(name, value, attrs)
>
> The widget is included in an admin form like:
>
> class PizzaForm(forms.ModelForm):
> class Meta:
> model = Pizza
> exclude = []
> widgets = {'toppings': CoolWidget}
>
>
> class PizzaAdmin(ModelAdmin):
> form = TemplateForm
>
> Now, if DEBUG is True, trying to open the relative pizza change or add
> form will result in:
>
> NameError: name 'WRONG' is not defined
>
> When DEBUG to False what I see is really strange:
>
> I get an empty change/add form!
>
>
> <https://lh3.googleusercontent.com/-k2-DznqIO2E/VuKq3sx74OI/AAAAAAAABlo/AFAvi1vQ3EI6o2mshUBCLQgd8vpvvF5VQ/s1600/widget-problem-django.png>
>
>
> Now suppose that the condition that raises the exception happens only on a
> remote server
>
> which has DEBUG=False. The exception happens because the configuration of
> a django project
>
> has not been updated correctly yet.
>
>
> Instead of failing loud, it will fail silently, leaving an empty
> add/change form.
>
>
> Is it the intended behaviour? Or a bug?
>
> I guess it is related due to the fact that template errors are silenced.
>
> Federico
>
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