Question

I have a model which has a method called ‘has_voted’. It looks like this…

def has_voted(self, user):
    # code to find out if user is in a recordset, returns a boolean

Is it possible to perform this method inside a template? Something like object.has_vote(user)?

Answer 1

You can only call methods with no parameters. So {{ object.has_voted }} would be OK, if the method was defined simply as has_voted(self), but as you’ve shown it would not be.

The best way to pass a parameter to a method is to define a simple template filter.

@register.filter
def has_voted(obj, user):
    return self.has_voted(user)

and call it:

{{ object|has_voted:user }}