Em quinta-feira, 20 de abril de 2017 23:18:03 UTC-3, Robin Lery escreveu:
>
> I have a very simple model and its related serializer and views:
>
> class Page(models.Model):
> user = models.ForeignKey(User)
> title = models.CharField(max_length=255)
> pub_date = models.DateTimeField(default=timezone.now)
>
> class PageSerializer(serializers.ModelSerializer):
> class Meta:
> model = Page
> fields = ('user', 'title', 'pub_date')
>
> class PageViewSet(viewsets.ModelViewSet):
> queryset = Page.objects.all()
> serializer_class = PageSerializer
> Now I can post like this:
>
> {
> "user": 1,
> "title": "Lorem ipsum"
> }
> This works fine. But I would like to post multiple objects like this:
>
> [
> {
> "user": 1,
> "title": "Lorem ipsum one"
> },
> {
> "user": 1,
> "title": "Lorem ipsum two"
> }
> ]
> But this gives me an error:
>
> "non_field_errors": [
>
> "Invalid data. Expected a dictionary, but got list."
> ]
> So to accept multple objects I modified the view as per the doc:
>
> class PageViewSet(viewsets.ModelViewSet):
> queryset = Page.objects.all()
> serializer_class = PageSerializer(queryset, many=True)
>
> But I am getting an error:
>
> TypeError at /api/blog/pages/
>
> 'ListSerializer' object is not callable
> What am I missing here?
>
You can do this overriding get_serializer method:
def get_serializer(self, *args, **kwargs):
if "data" in kwargs:
data = kwargs["data"]
# check if many is required
if isinstance(data, list):
kwargs["many"] = True
return super(YourModel, self).get_serializer(*args, **kwargs)
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