URLField serializer 400 Response

[coolbreeze2]

This is a test. Why requests 400?

from requests.auth import HTTPBasicAuth
import requests

data = {"code": "233",
        "url": "http://xyz:8080/api/file/"}
res = requests.post("http://127.0.0.1:8000/snippets/",
                    data=data,
                    auth=HTTPBasicAuth("test", "Love12345678"))
print(res.status_code, res.text)
# 400 {"url":["Enter a valid URL."]}

1. rest_framework\serializers.py->ModelSerializer->serializer_field_mapping->models.URLField: URLField->rest_framework\fields.py->URLField->URLValidator->django\core\validators.py->URLValidator

2. django\db\models\fields\__init__.py->URLField->URLValidator->django\core\validators.py->URLValidator

Both of them use the same URLValidator.

But it's ok in python manage.py shell

>>> from django.contrib.auth.models import User
>>> Snippet.objects.all()     
<QuerySet [<Snippet: Snippet object (1)>, <Snippet: Snippet object (2)>, <Snippet: Snippet object (3)>, <Snippet: Snippet object (4)>, <Snippet: Snippet object (5)>]>
>>> s.owner = User.objects.first()              
>>> s.save()
>>> from snippets.models import Snippet         
>>> s = Snippet()                       
>>> s.code = '233'                      
>>> s.url = 'http://xyz:8080/api/file/'
>>> from django.contrib.auth.models import User
>>> s.owner = User.objects.first()              
>>> s.save()
>>> Snippet.objects.all()  
<QuerySet [<Snippet: Snippet object (1)>, <Snippet: Snippet object (2)>, <Snippet: Snippet object (3)>, <Snippet: Snippet object (4)>, <Snippet: Snippet object (5)>, <Snippet: Snippet object (6)>]>

models.py

from django.db import models
from pygments.lexers import get_all_lexers
from pygments.styles import get_all_styles
from django.contrib.auth.models import User

# Create your models here.
LEXERS = [item for item in get_all_lexers() if item[1]]
LANGUAGE_CHOICES = sorted((item[1][0], item[0]) for item in LEXERS)
STYLE_CHOICES = sorted((item, item) for item in get_all_styles())


class Snippet(models.Model):
    created = models.DateTimeField(auto_now_add=True)
    title = models.CharField(max_length=100, blank=True, default='')
    code = models.TextField()
    linenos = models.BooleanField(default=False)
    language = models.CharField(choices=STYLE_CHOICES, default='python', max_length=100)
    style = models.CharField(choices=STYLE_CHOICES, default='friendly', max_length=100)
    owner = models.ForeignKey('auth.User', related_name='snippets', on_delete=models.CASCADE)
    url = models.URLField('URL', blank='False', null=False)

    class Meta:
        ordering = ('created',)

    def save(self, *args, **kwargs):
        super(Snippet, self).save(*args, **kwargs)

serializers.py

from rest_framework import serializers
from django.contrib.auth.models import User

from snippets.models import Snippet


class SnippetSerializer(serializers.HyperlinkedModelSerializer):
    owner = serializers.ReadOnlyField(source='owner.username')

    class Meta:
        model = Snippet
        fields = ('id', 'title', 'code', 'linenos', 'language', 'style', 'owner', 'url')

views.py

from rest_framework import permissions, viewsets
from snippets.models import Snippet
from snippets.serializers import SnippetSerializer
from snippets.permissions import IsOwnerOrReadOnly


class SnippetViewSet(viewsets.ModelViewSet):

    queryset = Snippet.objects.all()
    serializer_class = SnippetSerializer
    permission_class = (permissions.IsAuthenticatedOrReadOnly,
                        IsOwnerOrReadOnly,)

    def perform_create(self, serializer):
        serializer.save(owner=self.request.user)