Filter by retirement age?

Hola,

I have a model Person with a dob = models.DateField()

I would like to filter by age - in particular only include people less than 60 years old.

I am having no luck getting the syntax right and was looking for pointers?

          queryset=Person.objects.filter(dob__year__gte = datetime.datetime.today().year-61)

gets me an error like: Join on field 'dob' not permitted. Did you misspell 'year' for the lookup type?

 

RETIRE_Y = datetime.datetime.today().year-61

...

              queryset=Person.objects.filter(dob__gte = datetime(RETIRE_Y,1,1)))),

gives me errors like: 'module' object is not callable

I don't want to create a new field or function on the Person object that would calculate "age" everyday...

What am I doing wrong/how can I make it right?

cheers

L.

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