擅长:python、mysql、java
<p>问题解决了。在</p>
<pre><code>class ToySale(EmbeddedDocument):
end_time = FloatField()
percentage = IntField()
uid = IntField()
@property
def super_price(self):
toy = Toy.objects(sale__uid=self.uid) # get Document by EmbeddedDocument
return toy.price - (self.percentage * toy.price / 100)
</code></pre>