擅长:python、mysql、java
<p>使warval成为非必填字段</p>
<pre><code>class option(models.Model):
warval =models.ForeignKey(war, null=True)
value = models.CharField(max_length=10)
</code></pre>
<p>或定义表单集.warval保存之前,请设置一个默认值。。。你知道吗</p>
<p><strong>编辑:</strong></p>
<p>阅读<a href="https://docs.djangoproject.com/en/dev/topics/forms/modelforms/#saving-objects-in-the-formset" rel="nofollow">here</a>和<a href="https://docs.djangoproject.com/en/dev/topics/forms/modelforms/#using-a-subset-of-fields-on-the-form" rel="nofollow">here</a>,了解如何在窗体上使用字段子集并保存。你知道吗</p>