代碼為：

              # 查詢所有圖書 、 增加圖書
def get(self,request):

    queryset = BookInfo.objects.all()
    book_list = []

    for book in queryset:
        book_list.append({
            'id':book.id,
            'bread':book.bread

        })
    return JsonResponse (book_list,safe=False)
            

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遇到問題：

JsonResponse (book_list, safe=False )

safe=False 這是什么鬼 ？

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解決方案：

down 下源碼后 ：

              def __init__(self, data, encoder=DjangoJSONEncoder, safe=True,
             json_dumps_params=None, **kwargs):
    if safe and not isinstance(data, dict):
        raise TypeError(
            'In order to allow non-dict objects to be serialized set the '
            'safe parameter to False.'
        )
  
  if json_dumps_params is None:
        json_dumps_params = {}
    kwargs.setdefault('content_type', 'application/json')
    data = json.dumps(data, cls=encoder, **json_dumps_params)
    super(JsonResponse, self).__init__(content=data, **kwargs)
            

最終答案：

'In order to allow non-dict objects to be serialized set the ' 'safe parameter to False.'

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