您可以对所有Invoice对象执行bulk_create操作，从数据库中刷新它们，使它们都有id，为所有发票创建Transaction对象，然后用bulk_create保存它们。所有这些操作都可以在单个transaction.atomic上下文中完成。
另外，特别是对于django1.10和postrgres，看看这个answer。

您可以使用以下方法通过两个批量创建查询来完成此操作。

new_invoices = []
new_transactions = []
for loop:
    invoice = Invoice(params)
    new_invoices.append(invoice)

    for loop: 
        transaction = Transaction(params)
        transaction.invoice = invoice
        new_transactions.append(transaction)

Invoice.objects.bulk_create(new_invoices)

for each in new_transactions:
    each.invoice_id = each.invoice.id

Transaction.objects.bulk_create(new_transactions)

实现此目的的另一种方法可以像下面的代码片段：

from django.utils import timezone
from django.db import transaction

new_invoices = []
new_transactions = []
for sth in sth_else:
    ...
    invoice = Invoice(params)
    new_invoices.append(invoice)

for sth in sth_else:
    ...
    new_transactions.append(transaction)

with transaction.atomic():
    other_invoice_ids = Invoice.objects.values_list('id', flat=True)
    now = timezone.now()
    Invoice.objects.bulk_create(new_invoices)

    new_invoices = Invoice.objects.exclude(id__in=other_invoice_ids).values_list('id', flat=True)
    for invoice_id in new_invoices:
                transaction = Transaction(params, invoice_id=invoice_id)
                new_transactions.append(transaction)

    Transaction.objects.bulk_create(new_transactions)

我根据社区中的另一个问题this post编写此答案。