擅长:python、mysql、java
<p>您可以使用SerializerMethodField。在</p>
<pre><code>class AttendanceSerializer(serializers.ModelSerializer):
face_image = serializers.SerializerMethodField()
class Meta:
model = Attendance
fields = ('id', 'face_image')
def get_face_image(self, instance):
return (instance.face_image.url if instance.face_image else '')
</code></pre>