擅长:python、mysql、java
<p>您可以使用从<code>Payment</code>类到<code>PaymentType</code>类的<strong>ForeignKey</strong>字段来使用<em>多对一</em>关系</p>
<p><code>Payment</code>类上的此字段:</p>
<pre><code>payment_type = models.ForeignKey(PaymentType, null=False, blank=False, on_delete=models.CASCADE)
</code></pre>
<p>这将创建从<code>Payment</code>到<code>PaymentType</code>的关系</p>
<p>见<a href="https://docs.djangoproject.com/en/3.0/topics/db/examples/many_to_one/" rel="nofollow noreferrer">Many-To-One - Foreign Key Django Reference</a></p>