make_template_fragment_key behaves differently than the {% cache %} template tag for the "None" value

[Antonin]

The function make_template_fragment_key in django.core.cache.utils can be used to compute the cache key associated with a given template fragment.
When one of the parameters of this cache fragment get the value None, this function translates internally this value to 'None' (the string), whereas the template tag translates it to the empty string.

A patch for this bug can be found on the following branch:
​http://github.com/wetneb/django

[Tim Graham]

Could you please add a test and send a pull request? You may find the ​patch review checklist helpful.

[David Winterbottom]

I can't recreate this sorry - I find that None gets passed to the make_template_fragment_key function when called from the template tag. Here's the snippet I used to test:

        from django.template import Context,Template
        t = Template(
            "{% load cache %}{% cache 300 test myvar %}hello{% endcache %}")
        t.render(Context({'myvar': None}))

What am I missing?

[David Winterbottom]

Have resolved for now but am happy to revisit if you can provide some info on how to recreate the issue.

[Tim Graham]

Yes, the OP closed his ​PR has invalid, but forgot to close this ticket.