如何将“示例对象”映射到 url:website.com/api/<user>/<slug>
.
我明白了
invalid literal for int() with base 10: 'username'
错误。所以我知道我需要使用用户 ID 才能映射到对象,这是因为如果我使用 user_id (整数)(url:website.com/api/<user_id>/<slug>
)而不仅仅是用户/用户名(字符串)。
当将对象从 user_id (整数)映射到另一个字段(如 user (字符串))时,有没有办法覆盖默认值?
另外我不明白为什么在中传递用户而不是 user_iddef get_object
(Api View) 中并没有解决这个问题。
Url
urlpatterns = [
url(r'^api/(?P<user>\w+)/(?P<slug>[\w-]+)/$', ExampleDetailAPIView.as_view(), name='example'),
]
Api View
class ExampleDetailAPIView(RetrieveAPIView):
queryset = Example.objects.all()
serializer_class = ExampleDetailSerializer
def get_object(self):
user = self.kwargs.get('user')
slug = self.kwargs.get('slug')
return Example.objects.get(user=user, slug=slug)
def get_serilizer_context(self, *args, **kwargs):
return {'request': self.request}
串行器
class ExampleDetailSerializer(HyperlinkedModelSerializer):
url = serializers.SerializerMethodField()
class Meta:
model = Example
fields = [
'url',
]
def get_url(self, obj):
request = self.context.get('request')
return obj.get_api_url(request=request)
Model
class Example(models.Model):
user = models.ForeignKey(settings.AUTH_USER_MODEL, default=1)
example_name = models.CharField(max_length=100)
slug = models.SlugField(max_length=100, blank=True)
class Meta:
unique_together = ('user', 'slug')
def get_api_url(self, request=None):
return api_reverse('example-api:example', kwargs={'user': self.user.username, 'slug': self.slug}, request=request)
@receiver(pre_save, sender=Example)
def pre_save_example_slug_receiver(sender, instance, *args, **kwargs):
slug = slugify(instance.example_name)
instance.slug = slug