如何从DRF模型序列化程序中去除返回字段的空白?

class ObjectSerializer(serializers.ModelSerializer):
class Meta:
    model = models.MyModel
    fields = ('field1', 'field2')

我的查询代码如下所示:

class MyAPI(ListAPIView):
http_method_names = ['get']
serializer_class = ObjectSerializer

def get_queryset(self):
    queryset = MyModel.objects.values('field1', 'field2').filter(someField='SomeValue').all()
    return queryset

extra_kwargs = {"content": {"trim_whitespace": True}}

编辑:模型代码如下所示:

class MyModel(models.Model):
field1 = models.CharField(db_column='FIELD1', max_length=24)  # Field name made lowercase.
field2 = models.CharField(db_column='FIELD2', max_length=60, blank=True, null=True)  # Field name made lowercase.

class Meta:
    managed = False
    db_table = 'mytable'