Thank you for your answer but I already resovled, now I have other
question, how can do for detect if model has changed for example post or
put? How to do that django rest, thank you again
Le lun. 26 juil. 2021 20:20, Mustefa Kamil <risui...@gmail.com> a écrit :
> At model.py change this
> avatar = models.ImageField(upload_to='avatar', blank=True, null=True)
>
> On Saturday, July 24, 2021 at 2:39:31 PM UTC+3 manohiso...@gmail.com
> wrote:
>
>>
>> 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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