将Django queryset序列化为JSON:获取AttributeError'tuple'对象没有属性'_meta' [英] Serializing Django queryset to JSON: getting AttributeError 'tuple' object has no attribute '_meta'

问题描述

我正在使用Django 1.8.这是我的看法:

I'm using Django 1.8. This is my view:

from django.http import JsonResponse

...
query = "SELECT * FROM frontend_chemical WHERE id LIKE %s"
cursor.execute(query, (code + "%",))
data = cursor.fetchall()
print data
return JsonResponse(serializers.serialize('json', data), safe=False)

但这给了我:

AttributeError at /api/1.0/bnf_code: 'tuple' object has no attribute '_meta'

在线:

return JsonResponse(serializers.serialize('json', data), safe=True) 

在控制台中，我可以看到我的数据已返回OK:

In the console, I can see that my data has returned OK:

[(u'0210', u'Stable angina, acute coronary syndromes, and fibrinolysis'), (u'0211', u'Antifibrinolytic drugs and haemostatics'), (u'0212', u'Lipid-regulating drugs'), (u'0213', u'Local sclerosants')]

任何想法可能出什么问题吗?

Any idea what might be going wrong?

更新:我也一直在尝试使用 data = dictfetchall(cursor)将数据作为字典获取

UPDATE: I've also been trying to get the data as a dictionary, using data = dictfetchall(cursor) as described here.

但是，这只是在同一位置失败，并带有一个稍微不同的错误:

However, this just fails in the same place with a slightly different error:

AttributeError: 'dict' object has no attribute '_meta'

推荐答案

序列化器仅用于序列化Django模型.要序列化简单的python数据，请使用内置的 json 模块:

Serializers are used to serialize the django models only. To serialize simple python data use the built-in json module:

import json

return JsonResponse(json.dumps(data), safe=True) 

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