def insert_rows(table_id, instances, fusion_table=None):
"""
Insert rows in a batch
"""
if fusion_table is None:
fusion_table = FusionTable(table_id)
rows = []
for instance in instances:
fusion_table_fields = build_fields_for_row(instance)
rows.append(Row(row_id=None, fields=fusion_table_fields))
row_ids = fusion_table.insert(rows)
instance_content_type = ContentType.objects.get_for_model(instances[0])
for row_id, instance in zip(row_ids, instances):
fusion_table_row_id = FusionTableRowId(content_type = instance_content_type,
object_id = instance.pk,
row_id = row_id)
fusion_table_row_id.save()
