类型错误：“方法”对象不可下标 Python/django

Question

我有一个返回以下错误的测试用例。

追溯

Traceback (most recent call last):
  File "/usr/lib/python3.7/unittest/mock.py", line 1255, in patched
    return func(*args, **keywargs)
  File "/dir/to/project/Anwser/qanda/tests.py", line 29, in test_elasticsearch_upsert_on_save
    q.save()
  File "/dir/to/project/Anwser/qanda/models.py", line 40, in save
    elasticsearch.upsert(self)
  File "/dir/to/project/Anwser/qanda/service/elasticsearch.py", line 54, in upsert
    doc_type = question_dict['_type']
TypeError: 'method' object is not subscriptable

这是位于elasticsearch.py的函数

def upsert(question_model):
    client = get_client()
    question_dict = question_model.as_elastic_search_dict
    doc_type = question_dict['_type']
    del question_dict['_id']
    del question_dict['_type']
    response = client.update(
        settings.ES_IDENX,
        question_dict,
        id=question_model.id,
        body={
            'doc': doc_type,
            'doc_as_upsert': True,
        }
    )
    return response

当我阅读了有关类似问题的其他线程时，我得出的结论是问题依赖于调用函数的对象的__getItem(self)__ 。 由于函数应该返回一个字典，所以它返回一个方法。

这是模型内部的功能。

def as_elastic_search_dict(self):
        return {
            '_id': self.id,
            '_type': 'doc',
            'text': '{}\n{}'.format(self.title, self.question),
            'question_body': self.question,
            'title': self.title,
            'id': self.id,
            'created': self.created,
        }

测试用例：

class QuestionSaveTestCase(TestCase):
    """
        Testing Question.save()
    """

    @patch('qanda.service.elasticsearch.Elasticsearch')
    def test_elasticsearch_upsert_on_save(self, ElasticSearchMock):
        user = User.objects.create(
            username='unittest',
            password='unittest'
        )
        question_title = 'Unit test'
        question_body = 'Some unit test'
        q = Question(title=question_title,
                     question=question_body,
                     user=user)
        q.save()

        self.assertIsNotNone(q.id)
        self.assertTrue(ElasticSearchMock.called)
        mock_client = ElasticSearchMock.return_value
        mock_client.update.assert_called_once_with(
            settings.ES_IDENX,
            id=q.id,
            body={
                'doc': {
                    '_type': 'doc',
                    'text': '{}\n{}'.format(question_title, question_body),
                    'question_body': question_body,
                    'title': question_title,
                    'id': q.id,
                    'created': q.created,
                },
                'doc_as_upsert': True,
            }
        )

可用于解决此问题的所有可能用例是什么？ 如果我的理解是正确的，那么我应该覆盖__getItem(self)__以返回字典。 如果这是正确的，我应该如何实现__getItem(self)__并且如果它将被配置为返回字典，它将如何影响对象生命周期？

Answer 1

您需要执行该方法，方法名称后缺少括号，请将question_model.as_elastic_search_dict更改为question_model.as_elastic_search_dict() 。

所以你的功能将是：

def upsert(question_model):
    client = get_client()
    question_dict = question_model.as_elastic_search_dict()
    doc_type = question_dict['_type']
    del question_dict['_id']
    del question_dict['_type']
    response = client.update(
        settings.ES_IDENX,
        question_dict,
        id=question_model.id,
        body={
            'doc': doc_type,
            'doc_as_upsert': True,
        }
    )
    return response