擅长:python、mysql、java
<p>您仍然需要将<code>all_members</code>定义为模型字段(而不是整数),然后在<code>save()</code>实例时用所需的值填充它。你知道吗</p>
<pre><code>class Home(models.Model):
...
number_female = models.IntegerField()
number_male = models.IntegerField()
all_members = models.IntegerField()
def save(self):
self.all_members = self.number_female + self.number_male
super(Home, self).save()
</code></pre>