'Returns a list of accepted filters for this column.'

def get_accepted_filters(self):

    all = GridColumnFilter('all', {self.key: 'All'})
    accepted_filters = [all]
    for (k, v) in self.model_class.states.items():
        args = {self.key: v}
        accepted_filters.append(GridColumnFilter(v, args))
    return accepted_filters
