Question

我正在尝试序列化对象，以便可以使用它来构建API。我要序列化的模型是我的Profile模型。问题是当我转到网址：\ users时，输出为：

["[{\"model\": \"network.profile\", \"pk\": 2, \"fields\": {\"friends\": []}}, {\"model\": \"network.profile\", \"pk\": 3, \"fields\": {\"friends\": []}}, {\"model\": \"network.profile\", \"pk\": 4, \"fields\": {\"friends\": []}}]"]

我期待着这样的事情：

[{"user": "one", "friends":["foo", "bar", "baz"]}, {"user": "two", "friends":["one", "bar"]}]

models.py

class User(AbstractUser):
    pass


class Profile(models.Model):
    user = models.OneToOneField("User", on_delete=models.CASCADE, primary_key=True)
    friends = models.ManyToManyField("User", related_name='following', blank=True, symmetrical=False)

    def serialize(self):
        return {
            "user": self.user,
            "friends": [user.username for user in self.friends.all()]
        }

@receiver(post_save, sender=User)
def create_user_profile(sender, instance, created, **kwargs):
    try:
        instance.profile.save()
    except Profile.DoesNotExist:
        Profile.objects.create(user=instance)


class Post(models.Model):
    creator = models.ForeignKey("Profile", on_delete=models.CASCADE)
    content = models.TextField(max_length=250, blank=True)
    created = models.DateTimeField(auto_now_add=True)
    likes = models.PositiveIntegerField(default=0)

    def serialize(self):
        return {
            "id": self.id,
            "creator": self.creator.user.username,
            "content": self.content,
            "created": self.created.strftime("%d %b %Y, %H:%M"),
            "likes": self.likes
        }

views.py

def allUsers(request):

    if request.method == "GET":
        profiles = serializers.serialize("json", Profile.objects.all())
    else:
        return JsonResponse({"error": "Error displaying all users"}, status=400)

    return JsonResponse([profiles], safe=False)

def allPosts(request):

    if request.method == "GET":
        posts = Post.objects.all()
    else:
        return JsonResponse({"error": "Error displaying all posts"}, status=400)

    posts = posts.order_by("created").all()
    return JsonResponse([post.serialize() for post in posts], safe=False)

urls.py

    path("posts", views.allPosts, name="all_posts"),
    path("users", views.allUsers, name="all_users")

现在，我宁愿不使用Django rest框架，因为我仍在学习，并且不认为朝这个方向发展对我而言会有所帮助。我设法序列化了Post模型，并一直将其用作Fetch API，因此我也将其包括在内，因此很清楚我试图遵循的格式。

序列化Django对象

0 个答案: