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J'essaye de télécharger une photo en utilisant Django Rest Framework et Android Studio, mais je reçois toujours une valeur nulle lorsque j'essaie de récupérer cette image.Télécharger une photo avec Django Rest Framework
Models.py:
class FotoCliente(models.Model):
image = models.ImageField(upload_to='userpic/%Y/%m/%d/', null = true, max_length = 255)
Serializer.py
class FotoClienteSerializer(serializers.HyperlinkedModelSerializer):
#id_cliente_cliente = ClienteSerializer()
class Meta:
model = FotoCliente
fields = ('id','image','url')
Views.py
class PhotoList(APIView):
def get(self, request, format = None):
photo = FotoCliente.objects.all()
serializer = FotoClienteSerializer(photo, many = True)
return Response(data= serializer.data, status = status.HTTP_200_OK)
def post(self, request, format = None):
serializer = FotoClienteSerializer(data=request.data, context={'request':request})
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)
class PhotoDetail(APIView):
def get_object(self, pk):
try:
return FotoCliente.objects.get(pk=pk)
except:
return Http404
def get(self, request, pk,format=None):
photo = self.get_object(pk)
serializer = FotoClienteSerializer(photo,context={'request':request})
return Response(data=serializer.data, status = status.HTTP_200_OK)
def post(self, request, format = None):
serializer = FotoClienteSerializer(data=request.data, files = request.FILES)
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)
def delete(self, request, pk, format= None):
photo = self.get_object(pk)
photo.delete()
return Response(status=status.HTTP_204_NO_CONTENT)
def put (self, request, pk, format= None):
photo = self.get_object(pk)
serializer = FotoClienteSerializer(photo, data= request.data)
if serializer.is_valid():
serializer.save()
return Response(serializer.data)
return Response(serializer.errors, status = status.status.HTTP_400_BAD_REQUEST)
Urls.py
url(r'^api/fotos/$', views.PhotoList.as_view(), name ='fotocliente-list'),
url(r'api/fotos/(?P<pk>[0-9]+)/$', views.PhotoDetail.as_view(), name = 'fotocliente-detail'),
Résultat:
{ "id": 7, "image": null, "url": "http://127.0.0.1:8080/api/fotos/7/"}
Android
Pour télécharger la photo, j'utilise la bibliothèque ion koush pour Android.
Ion.with(editClientActivity.this)
.load("POST", url) //url de query
.setHeader("Cache-Control", "No-Cache")//desabilitando cache denovo porque essa parada é bug
.setHeader("Authorization", getIntent().getExtras().getString("token"))//token de acesso
.noCache()//desabilitando cache
//.setLogging("LOG",Log.VERBOSE)//para debug
.setMultipartParameter("application/json",dadosFoto.toString())
.setMultipartFile("foto","multipart/form-data",file)
.asJsonObject() //array recebida
.setCallback(new FutureCallback<JsonObject>() {
@Override
public void onCompleted(Exception e, JsonObject result) {
// do stuff with the result or error
Log.v("R Foto: ", "" + result);
if (e != null) {
Toast.makeText(editClientActivity.this, "Erro na Query: " + e, Toast.LENGTH_LONG).show(); //cria balao de texto na view indicada
Log.v("Query Error: ", "" + e.getMessage()); //DEBUG
}
Toast.makeText(editClientActivity.this, "Cliente de cara nova ;) !", Toast.LENGTH_LONG).show();
intent = new Intent(getApplicationContext(), clientSummaryActivity.class); // cria nova intent
intent.putExtra("cpfCliente",date.toDbCpf(cpfCliente.getText().toString()));
intent.setFlags(Intent.FLAG_ACTIVITY_REORDER_TO_FRONT);
startActivity(intent);
}
});