擅长:python、mysql、java
<p>不需要,<code>Model</code>的clean方法只用于引发<code>non field errors</code>,但是可以通过创建<code>clean_title</code>方法来引发字段错误。在</p>
<pre><code>def clean(self):
"""
Hook for doing any extra model-wide validation after clean() has been
called on every field by self.clean_fields. Any ValidationError raised
by this method will not be associated with a particular field; it will
have a special-case association with the field defined by NON_FIELD_ERRORS.
"""
</code></pre>