Default Image in Django Rest Framework - django

Question

I have an optional ImageField in my model with a default image. I am using Django Rest Framework for the model api. However when I try to post (post request outside the browser) without images I continue getting the error:No file was submitted. Check the encoding type on the form.
models.py
class Detector(models.Model):
average_image = models.ImageField(upload_to='average_image/',
default='average_image/default.png',
null=True, blank=True)
serializer.py
class DetectorSerializer(serializers.ModelSerializer):
class Meta:
model = Detector
fields = ('average_image')
views.py
class DetectorAPIList(generics.ListCreateAPIView):
serializer_class = DetectorSerializer
What am I missing?
Thanks for your time!

Answer 1

i hit the same issue, i had to explicitly mark my image field in the serializer as blank:
class DetectorSerializer(serializers.ModelSerializer):
average_image = serializers.ImageField(source='average_image', blank=True)
class Meta:
model = Detector
fields = ('average_image',)
It seems that rest framework is unable to grab it from model or something. After this i am able to POST data to the API using requests like this:
import requests
from requests.auth import HTTPBasicAuth
r = requests.post(
'http://localhost:8000/detectors/',
data={'some': 'data'},
auth=HTTPBasicAuth('user', 'password')
)
print r.text
And this is the response, as you can see it used the default from the model field definition:
{"average_image": "average_image/default.png"}
You can also try to POST with specified file:
r = requests.post(
'http://localhost:8000/detectors/',
files={'average_image': open('/path/to/image.jpg')},
data={'some': 'data'},
auth=HTTPBasicAuth('user', 'password')
)
print r.text
Hope this helps.