Save Image from url Django Rest Framework

Question

I'm trying to save an image from a url in the post request.

Here is what I have so far, the error is while passing the file to the serializer.

#models.py
class Picture(models.Model):
    picture = models.ImageField(
        upload_to=upload_location_picture, max_length=255
    )
    owner = models.ForeignKey(
        User, on_delete=models.CASCADE, related_name='owned_pictures')

#views.py
class PlanPostPictureByUrl(APIView):
    '''
    Class to post dislike to plan
    '''
    permission_classes = (permissions.IsAuthenticated,)

    def post(self, request, format=None):
        img_url = request.data["picture"]
        name = urlparse(img_url).path.split('/')[-1]
        response = requests.get(img_url)
        if response.status_code == 200:
            serializer = PlanPicturesSerializer(
                data={"picture":ContentFile(response.content)})
        if serializer.is_valid():
            serializer.save(owner=self.request.user)
            return Response(status=status.HTTP_201_CREATED)
        return Response(status=status.HTTP_400_BAD_REQUEST)


#serializers.py
class PlanPicturesSerializer(serializers.ModelSerializer):

    class Meta:
        model = Picture
        fields = ['picture']

This is the error I am getting from the serializer:

{'picture': [ErrorDetail(string='No filename could be determined.', code='no_name')]}

` response = requests.get(img_url) to response = requests.file.get(img_url) — sahasrara62
– sahasrara62, Commented Mar 9, 2020 at 2:29
img_url = request.FILES.get("picture") do this and you will get the File. — Mirza715
– Mirza715, Commented Mar 9, 2020 at 2:43

cclloyd · Accepted Answer · 2020-03-26 04:34:03Z

1

I have something like this in my serializers create and update methods.

from django.core.files.uploadedfile import UploadedFile

url = validated_data['newIconFromURL']
# Remove url from the submitted data
validated_data['newIconFromURL'] = ''
# Download data from url (requires `requests` module.  Can also be done with urllib)
response = requests.get(validated_data['newIconFromURL'])
# Set icon field (ImageField) to binary file
validated_data['icon'] = UploadedFile(BytesIO(response.content), name='icon')

Note that the file name does not need to be unique, as Django will append random characters to the actual filename to make it unique.

answered Mar 26, 2020 at 4:34

cclloyd

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