Django, query filtering from model method

django, django-queryset

Solution

You cannot query against model methods or properties. Either use the criteria within it in the query, or filter in Python using a list comprehension or genex.

Problem

I have these models: ``` def Foo(Models.model): size = models.IntegerField() # other fields def is_active(self): if check_condition: return True else: return False def Bar(Models.model): foo = models.ForeignKey("Foo") # other fields ``` Now I want to query Bars that are having active Foo's as such: ``` Bar.objects.filter(foo.is_active()) ``` I am getting error such as ``` SyntaxError at / ('non-keyword arg after keyword arg' ``` How can I achieve this?

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