Determine the properties for the placeName coverage field.

def set_coverage_placeName(self):
        """Determine the properties for the placeName coverage field."""
        if (self.solr_response
                and self.solr_response != 'error'
                and self.solr_response.response != 'error'):
            location_list = self.solr_response.get_location_list_facet().facet_list
        else:
            location_list = []
        form_dict = {
            'view_type': 'prefill',
            'value_json': json.dumps(location_list, ensure_ascii=False),
            'value_py': location_list,
        }
        return form_dict