Python 在 Django 中创建 json 数组
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Creating json array in django
提问by aquaman
I am trying to make a json array in django but I am getting error -
我正在尝试在 django 中创建一个 json 数组，但出现错误 -
In order to allow non-dict objects to be serialized set the safe parameter to False
and my views.py -
和我的 views.py -
def wall_copy(request):
if True:
posts = user_post.objects.order_by('id')[:20].reverse()
return JsonResponse(posts)
Basically user_post is a model a posts is the object of top 20 saved data. I want to send a json array but I am unable to convert posts into a json array. I also tried serializers but it didnt helped.
基本上 user_post 是一个模型，一个帖子是前 20 个保存数据的对象。我想发送一个 json 数组，但我无法将帖子转换为 json 数组。我也尝试过序列化程序，但没有帮助。
I am stuck help me please.
我卡住了请帮助我。
Thanks in advance.
提前致谢。
采纳答案by ger.s.brett
Would this solve your problem?
这能解决你的问题吗？
from django.core import serializers
def wall_copy(request):
posts = user_post.objects.all().order_by('id')[:20].reverse()
posts_serialized = serializers.serialize('json', posts)
return JsonResponse(posts_serialized, safe=False)
回答by S.Kozlov
Try to use valuesmethod: http://django.readthedocs.org/en/1.7.x/ref/models/querysets.html#django.db.models.query.QuerySet.values. It will produce dict-like representation for objects fields you need.
尝试使用值方法：http: //django.readthedocs.org/en/1.7.x/ref/models/querysets.html#django.db.models.query.QuerySet.values。它将为您需要的对象字段生成类似 dict 的表示。
回答by Projesh Bhoumik
You can solve this by using safe=False:
您可以使用safe=False以下方法解决此问题：
def wall_copy(request):
posts = user_post.objects.all().order_by('id')[:20].reverse()
return JsonResponse(posts, safe=False)
Note that it's not really unsafe- you just have to make sure on your own, that what you are trying to return can be converted to JSON.
请注意，它并不是真的不安全- 您只需要自己确保您尝试返回的内容可以转换为 JSON。
See JsonResponsedocs for reference.
请参阅JsonResponse文档以供参考。
