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Django Rest Framework ImageField

Question

No puedo guardar la imagen en este ImageField.

al enviar datos de vuelta:

{
    "image": ["No file was submitted. Check the encoding type on the form."]
}

model.py

class MyPhoto(models.Model):
    owner = models.ForeignKey(''auth.User'', related_name=''image'')
    image = models.ImageField(upload_to=''photos'', max_length=254)

serializers.py

class PhotoSerializer(serializers.HyperlinkedModelSerializer):
    class Meta:
        model = MyPhoto
        fields = (''url'', ''id'', ''image'', ''owner'')
        owner = serializers.Field(source=''owner.username'')

view.py

class PhotoList(APIView):
    permission_classes = (permissions.IsAuthenticatedOrReadOnly, IsOwnerOrReadOnly)

    def get(self, request, format=None):
        photo = MyPhoto.objects.all()
        serializer = PhotoSerializer(photo, many=True)
        return Response(data=serializer.data, status=status.HTTP_200_OK)

    def post(self, request, format=None):
       serializer = PhotoSerializer(data=request.DATA)
       if serializer.is_valid():
           serializer.save()
           return Response(serializer.data, status=status.HTTP_201_CREATED)
       return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)

    def pre_save(self, obj):
        obj.owner = self.request.user


class PhotoDetail(APIView):

    permission_classes = (permissions.IsAuthenticatedOrReadOnly, IsOwnerOrReadOnly)

    def get_object(self, pk):
        try:
            return MyPhoto.objects.get(pk=pk)
        except MyPhoto.DoesNotExist:
            raise Http404

    def get(self, request, pk, format=None):
        photo = self.get_object(pk)
        serializer = PhotoSerializer(photo)
        return Response(serializer.data)

    def put(self, request, pk, format=None):
        photo = self.get_object(pk)
        serializer = PhotoSerializer(photo, data=request.DATA)
        if serializer.is_valid():
            serializer.save()
            return Response(serializer.data)
        return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)

    def delete(self, request, pk, format=None):
        photo = self.get_object(pk)
        photo.delete()
        return Response(status=status.HTTP_204_NO_CONTENT)

    def pre_save(self, obj):
        obj.owner = self.request.user

url.py

urlpatterns = patterns('''',
    url(r''^$'', ''main.views.main_page''),
    url(r''^api/photo/$'', views.PhotoList.as_view(), name=''myphoto-list''),
    url(r''^api/photo/(?P<pk>[0-9]+)/$'', views.PhotoDetail.as_view(), name=''myphoto-detail''),)

rizo

curl -X POST -S /
  -H ''Content-Type: application/json'' /
  -u "michael:bush_pass" /
  --data-binary ''{"owner":"/users/1/", /
    "image":"/Users/test/Downloads/1383310998_05.jpg"}'' /
  127.0.0.1:8000/api/photo/

Answer 1

Carga de archivos de imagen con Django Rest Framework:

models.py:

class MyPhoto(models.Model):
    name = models.CharField(max_length=255)
    image = models.ImageField(upload_to=''myphoto/%Y/%m/%d/'', null=True, max_length=255)

serializers.py:

class MyPhotoSerializer(serializers.ModelSerializer):
    class Meta:
        model = MyPhoto
        fields = (''id'', ''name'', ''image'')

views.py:

class PhotoList(APIView):
    def post(self, request, format=None):
        serializer = MyPhotoSerializer(data=request.data)
        if serializer.is_valid():
            serializer.save()
            return Response(serializer.data, status=status.HTTP_201_CREATED)
        else:
            return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)

Espero que ayude a alguien.

Answer 2

Creo que puedes usar request.data en su lugar después de django rest framework 3.0 . El uso de request.DATA y request.FILES ahora está pendiente de desaprobación a favor de un único atributo request.data que contiene todos los datos analizados.

Puedes consultarlo desde here

Answer 3

Lo siguiente debería funcionar si está publicando la imagen como cadena base64 y su serializador se establece en consecuencia y hereda el serializador.Serializador

 # views.py 
import base64
import os
from django.core.files import File 

class PhotoList(APIView):
    def post(self,request,format=None):
        serializer = PhotoSerializer(data=request.data)
        if serializer.is_valid():
            # access the data as serializer.validated_data[''keys'']
            # save the MyPhoto obj lets call it myphoto
            # get the base64 string 
            imgstr64 = serializer.validated_data[''corresponding filed in the serializer'']
            imgdata = base64.b64decode(imgstr64)
            fname = ''/tmp/%s.jpg''%(str(myphoto.id))
            with open(fname,''wb'') as f:
                f.write(imgdata)
            imgname = ''%s.jpg''%(str(myphoto.id))
            myphoto.image.save(imgname,File(open(fname,''r'')))
            os.remove(fname)

Answer 4

Parece que le falta la request.FILES Argumento de request.FILES al constructor del serializador en la post y los controladores de put .

serializer = PhotoSerializer(data=request.DATA, files=request.FILES)