How to create seperate POST request for imagefield in DRF - django

Question

I need to make a separate API for the image file. How can I achieve this?
models.py
class Organization(models.Model):
code = models.CharField(max_length=25, null=False, unique=True)
name = models.CharField(max_length=100, null=False)
location = models.ForeignKey(Location, on_delete=models.RESTRICT)
description = models.TextField()
total_of_visas = models.IntegerField(null=False, default=0)
base_currency = models.ForeignKey(Currency, on_delete=models.RESTRICT)
logo_filename = models.ImageField(upload_to='uploads/')
serializers.py
class OrganizationSerializer(serializers.ModelSerializer):
location = serializers.CharField(read_only=True, source="location.name")
base_currency = serializers.CharField(read_only=True, source="base_currency.currency_master")
location_id = serializers.IntegerField(write_only=True, source="location.id")
base_currency_id = serializers.IntegerField(write_only=True, source="base_currency.id")
class Meta:
model = Organization
fields = ["id", "name", "location", "mol_number", "corporate_id", "corporate_name",
"routing_code", "iban", "description", "total_of_visas", "base_currency", "logo_filename",
"location_id", "base_currency_id"]
def validate(self, data):
content = data.get("content", None)
request = self.context['request']
if not request.FILES and not content:
raise serializers.ValidationError("Content or an Image must be provided")
return data
def create(self, validated_data):
....
def update(self, instance, validated_data):
....
views.py
class OrganizationViewSet(viewsets.ModelViewSet):
queryset = Organization.objects.all()
serializer_class = OrganizationSerializer
lookup_field = 'id'
urls.py
router = routers.DefaultRouter()
router.register('organization', OrganizationViewSet, basename='organization')
urlpatterns = [
path('', include(router.urls)),
]+static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)
I don't have idea how to make POST request for image field from postman. I've been stuck here for a long time. Any help is appreciated.

Answer 1

if you want to update the image field separately you just have to create a separate serializer for it
class OrganizationImageSerializer(serializers.ModelSerializer):
logo_filename = serializers.ImageField()
class Meta:
model = Organization
fields = ["logo_filename"]
view.py
class OrganizationImageView(generics.UpdateAPIView):# or `generics.RetrieveUpdateAPIView` if you also want to retriev the current one before updating it
serializer_class = OrganizationImageSerializer
permission_classes = [IsAuthenticated, ]
def get_queryset(self):
queryset = Organization.objects.filter(id=self.kwargs['pk'])
return queryset
urls.py
from .views import OrganizationImageView
urlpatterns = [
...
path('update_org/<int:pk>', OrganizationImageView.as_view(), name='OrganizationImageUpdater'),
]