ImageField and API Test Case

[they.said.thi...@gmail.com]

Hello, suppose I have the following code:

class BizProfile(models.Model):

    title = models.CharField(max_length=100)

    description = models.CharField(max_length=500, default="", blank=True)

    profile_image = models.ImageField(max_length=200, blank=True, null=True)

    banner_image = models.ImageField(max_length=200, blank=True, null=True)

class BizHasPhoto(models.Model):

    biz_profile = models.ForeignKey(BizProfile)

    photo = models.ImageField(max_length=200)

    description = models.CharField(max_length=300, default="", blank=True)

serializers and views are default.

I get HTTP 200 when running the following test:

profile_image = open('valid_profile_image.jpg', 'rb')

banner_image = open('valid_banner_image.jpg', 'rb')

data = {

    'profile_image': profile_image,

    'banner_image': banner_image

}

response = self.client.patch(url, data, format='multipart')

Later on when doing a GET to the biz_profile, I verify that response.data['profile_image'] is 

'http://testserver/media/valid_profile_image.jpg' and response.data['banner_image'] is

'http://testserver/media/valid_banner_image.jpg', so I guess my views, urls and parsers are alright.

But at the same time I get HTTP 400 with "the submitted file is empty" when running the following test:

biz_profile_url = reverse('url_to_reverse_here', args=[biz_profile.pk])

photo = open('valid_photo.jpg', 'rb')

data = {

    'biz_profile': biz_profile_url,

    'description': 'a description goes here',

    'photo': banner_image

}

response = self.client.post(url, data, format='multipart')

Am I doing something wrong? Thanks in advance.

[they.said.thi...@gmail.com]

If anyone arrives here, I fixed this by marking setting the 'photo' serializer field as 'required': False and 'allow_null': True, plus adding:

def perform_create(self, serializer):

    return serializer.save(photo=self.request.data('upload_image'))

I have no idea why, but it's important to leave 'photo' data field as blank, and upload the image using another field, in this example: 'upload_image'.

Hope it helps some space cowboy.