擅长:python、mysql、java
<p>试试这个:</p>
<pre><code>item = Listing(owner=owner, title=title, description=description, link=link, startingBid=startingBid, category_id=category)
</code></pre>
<p>Category需要一个对象,而您正在传递一个id,因此如果您传递的是它的id,那么<code>category_id</code>应该执行此操作</p>
<p>如果您通过类别选择,则应尝试:</p>
<pre><code>item = Listing(owner=owner, title=title, description=description, link=link, startingBid=startingBid, category__category=category)
</code></pre>