'Apply any query selectors passed as form variables.'

def _apply_form_query(self, queryset):

    for (parameter, values) in self._query_params.lists():
        if (':' in parameter):
            (parameter, comparison_type) = parameter.split(':', 1)
        else:
            comparison_type = None
        if (not self._query_processor.has_selector(parameter)):
            continue
        for value in values:
            queryset = self._query_processor.apply_selector(queryset, parameter, value, comparison_type=comparison_type)
    return queryset
