django.template.defaultfilters.stringfilter()
If you’re writing a template filter that only expects a string as the first argument, you should use the decorator stringfilter. This will convert an object to its string value before being passed to your function:
1 2 3 4 5 6 7 8 9 | from django import templatefrom django.template.defaultfilters import stringfilterregister = template.Library()@register.filter@stringfilterdef lower(value): return value.lower() |
This way, you’ll be able to pass, say, an integer to this filter, and it won’t cause an AttributeError (because integers don’t have lower() methods).
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