Question

我有一个mongodb集合，我必须根据文档中是否存在子文档来将一些数据插入其中。集合中的示例文档文档是

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我必须根据id的值来更新它，这样如果id已经在文档中，请更新它，否则创建新文档。我用过的语法是：

posts4 = db4.posts
post_id4 = posts4.update(posts4.find_one({'id' : usr.get('id')}), dict4, upsert = True)

dict4是要更新的新文档，如果找到了ID

然而，这给了我一个错误，完整的追溯是：

  File "new.py", line 63, in <module>
    stream.statuses.filter(follow = 95995660)
  File "/usr/lib/python2.7/site-packages/twython/streaming/types.py", line 65, in filter
    self.streamer._request(url, 'POST', params=params)
  File "/usr/lib/python2.7/site-packages/twython/streaming/api.py", line 148, in _request
    if self.on_success(data):  # pragma: no cover
  File "new.py", line 48, in on_success
    post_id4 = posts4.update(posts4.find_one({'id' : usr.get('id')}), dict4, upsert = True)
  File "/usr/lib64/python2.7/site-packages/pymongo/collection.py", line 463, in update
    raise TypeError("spec must be an instance of dict")
TypeError: spec must be an instance of dict

请帮助!!

Answer 1

要更新的搜索条件在作为update参数传递时必须是字典。您可以直接传递字典进行更新，如下所示：

posts4 = db4.posts
post_id4 = posts4.update({'id' : usr.get('id')}, dict4, upsert = True)

您可以查看update in mongodb 了解详情

如何解决TypeError：spec必须是pymongo上的dict实例

1 个答案: