#28719: Better exception message when get_queryset returns None
---------------------------------------------+------------------------
Reporter: Bjorn Kristinsson | Owner: nobody
Type: Bug | Status: new
Component: Generic views | Version: master
Severity: Normal | Keywords:
Triage Stage: Unreviewed | Has patch: 1
Needs documentation: 0 | Needs tests: 0
Patch needs improvement: 0 | Easy pickings: 1
UI/UX: 0 |
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One of my `ListViews` suddenly started raising `TemplateDoesNotExist` with
a rather cryptic (to me) message:
{{{
Template-loader postmortem
Django tried loading these templates, in this order:
Using engine :
This engine did not provide a list of tried templates.
}}}
It took me a while to realise this was because my get_queryset wasn't
returning anything. It did some filtering based on user settings, and I
didn't have a fallback for when none of the filtering steps applied.
Thought it might be helpful to have a better message is no template names
are found and `object_list` is `None`. Suggesting: "Expected a queryset,
but found None. Please check that <cls>.get_queryset() returns a
queryset." Pull request coming up.
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Ticket URL: <https://code.djangoproject.com/ticket/28719>
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