How to check ImageField is empty

Question

I have an ImageField in my model and when I'm saving it I want to check that if it's None or not.

In django shell I'm calling my object's ImageField and it gives :

>>> p.avatar <ImageFieldFile: None> >>> p.avatar is None False

I found that the ImageField's name is u'', so is there any better way to do it ?

Yuji 'Tomita' Tomita · Accepted Answer · 2011-03-06 20:16:48Z

I found that the ImageField's name is u'', so is there any better way to do it ?

Actually, it looks like that's exactly how this class evaluates bool(), so the better way is to just test its bool() by calling if p.avatar

ImageFieldFile subclasses File, which defines:

def __nonzero__(self): return bool(self.name)

So the better way is indeed:

if not p.avatar: print "I don't exist" bool(p.avatar) is False

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