[英]How can I JSON serialize a queryset on Django?
I'd like to return on my ajax response a queryset, this is the error I get when I try to serialize a queryset. 我想在ajax响应上返回一个查询集,这是我尝试序列化查询集时遇到的错误。
TypeError: 'Font: FontName' is not JSON serializable
TypeError:'Font:FontName'不可序列化JSON
I am using JSON response like so : 我正在像这样使用JSON响应:
...
return JsonResponse({
'foo': Font.objects.filter(id=1).first(),
})
I also tried, same error : 我也试过,同样的错误:
response = json.dumps({
'foo' : tmp_fonts,
})
return HttpResponse(response, content_type='application/json')
third try : 第三次尝试:
AttributeError: 'str' object has no attribute '_meta'
AttributeError:“ str”对象没有属性“ _meta”
# tmp_fonts = [<Font:CaviarDream>, <Font:Arial>, <Font:Calibri>, etc...]
return JsonResponse({
'foo': serializers.serialize('json', tmp_fonts),
})
I'd like to be able to get it back on response and display every fields in the query on my template. 我希望能够在响应中恢复它并在模板上显示查询中的每个字段。 Is this even possible ?
这有可能吗?
Model : 型号:
class UserInfo(models.Model):
organisation = models.CharField(max_length=255)
font = models.ManyToManyField(Font)
class Font(models.Model):
name = models.CharField(max_length=255)
So the short version is: 因此,简短的版本是:
from django.http import JsonResponse
from django.views import generic
from .models import Font
class FontListAjaxView(generic.View):
def get(self, *args, **kwargs):
return JsonResponse(data=list(Font.objects.values()), safe=False)
# or the "safe" version, where data needs to be dictionary:
# return JsonResponse(data={'data': list(Font.objects.values()))
Solution : That is what worked for querysets in list. 解决方案:这就是列表中查询集的工作方式。
# tmp_fonts = [<Font:CaviarDream>, <Font:Arial>, <Font:Calibri>, etc...]
response = JsonResponse({
'foo' : serializers.serialize('json', tmp_fonts),
})
return HttpResponse(response, content_type='application/json')
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