Hello everyone
A few days ago I made a school project which consists in doing chat or
almost mini social network, I use as backend django rest framework because
it is easy and fast for development, and I use as front-end Kivy client. But
I encountered a problem that I can't solve it, obviously I searched
everything on the web but it gives me the same result, here is my code:
models.py:
class Profile(models.Model):
#user = models.OneToOneField(User)
name = models.CharField(max_length=20)
avatar = models.ImageField(upload_to='avatar', blank=True)
def __str__(self):
return self.name
serializers.py:
class Base64ImageField(serializers.ImageField):
def to_internal_value(self, data):
if isinstance(data, six.string_types):
if 'data:' in data and ';base64,' in data:
header, data = data.split(';base64,')
try:
decoded_file = base64.b64decode(data)
except TypeError:
self.fail('invalid_image')
file_name = str(uuid.uuid4())[:12] # 12 characters are more
than enough.
file_extension = self.get_file_extension(file_name,
decoded_file)
complete_file_name = "%s.%s" % (file_name, file_extension, )
data = ContentFile(decoded_file, name=complete_file_name)
return super(Base64ImageField, self).to_internal_value(data)
def get_file_extension(self, file_name, decoded_file):
extension = imghdr.what(file_name, decoded_file)
extension = "jpg" if extension == "jpeg" else extension
return extension
class ProfileSerializer(serializers.ModelSerializer):
avatar = Base64ImageField(max_length=None, use_url=True)
class Meta:
model = Profile
fields = ('id','name','avatar',)
views.py:
class ProfileViewSet(viewsets.ModelViewSet):
queryset = Profile.objects.all()
serializer_class = ProfileSerializer
parser_classes = (MultiPartParser, JSONParser)
And in my front-end client:
def create_user(self, *args):
username = self.sm.get_screen('signin_screen').ids.username.text
password = self.sm.get_screen('signin_screen').ids.sign_pass1.text
email = self.sm.get_screen('signin_screen').ids.email.text
image = self.path
with open(self.path, "rb") as img_file:
my_string = base64.b64encode(img_file.read())
print()
img = my_string.decode('utf-8')
params = json.dumps({'name': username, 'avatar': img})
headers = {'Content-type': 'application/json',
'Accept': 'application/json'}
req = UrlRequest('http://127.0.0.1:8000/api/profile/',
method='POST', on_success=self.user_created,
on_failure=self.user_login_error, req_body=params,
req_headers=headers,
ca_file=cfi.where(),verify=True, on_error=self.error, debug=True)
If I execute this code it returns me:
Bad Request: /api/profile/
[24/Jul/2021 11:32:49] "POST /api/profile/ HTTP/1.1" 400 418
Please how can resolve this error?
thank you very much
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