Hallöchen!
Up to Django 1.11, I had the following pattern frequently in my
code:
@register.filter
@mark_safe
def myfilter(value):
...
Smilarly for tags. This has worked for years, however, with Django
2.0, this leads to the TemplateError saying that "myfilter requires
0 arguments, 1 provided". For tags, it results in an IndexError
because the "params" list when processing the tag is empty.
If I make @mark_safe the outmost (i.e. first) decorator, no
exception occurs – but the output is escaped HTML instead of
passed-through HTML.
The safe and obvious workaround is to use mark_safe() as a function
instead of @mark_safe. Would be a pity, though.
Is this a bug or am I doing something wrong?
Tschö,
Torsten.
--
Torsten Bronger
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