@register.inclusion_tag fails to work on decorated function

[Chris Jerdonek]

When defining custom tags, the @register.inclusion_tag does not seem to work when applied to a decorated function. For example--

@register.inclusion_tag('template.html', takes_context=True)
@my_decorator
def my_tag(context, arg):
    # Code

However, I found that if name='my_tag' is added to the inclusion_tag() call, then it worked. This wasn't easy to figure out and doesn't seem to be documented. It just silently failed with no easy way to troubleshoot. It seems like the tag should work without needing to add the name argument.

[Preston Timmons]

I can see how this would be confusing, but I'm not sure it's a Django problem.

The key to fixing your example is making sure your decorator uses functools.wraps. This will carry through the __name__ attribute from the original my_tag function. Otherwise, that piece of information is lost and the tag will be registered with whatever the name is of the inner function in your decorator.

[Chris Jerdonek]

Thanks, @prestontimmons. That makes sense.