Uploading image/images on Django REST Framework

Question

I am trying to upload images on an endpoint in postman but i'm getting the error in the screenshot below Below is my code for sake of brevity i'll only send the affected parts.

Models:

class Post(models.Model):    
    content = models.TextField() 
    image = models.ManyToManyField(PostImage,blank=True,related_name='posts_images')

class PostImage(models.Model):
    image = models.ImageField(upload_to='post-images',validators=[FileExtensionValidator(['png','jpg','gif','jpeg'])])

Serializers:

class PostImageSerializer(serializers.ModelSerializer):
    class Meta:
        model = PostImage
        fields = ('image')

class PostSerializer(serializers.ModelSerializer):
    image = PostImageSerializer(many=True, required=False)
    class Meta:
        model = Post
        fields = ['content','image',]

    def create(self, validated_data):
        r_data = self.context['request'].FILES
        
        instance = super().create(validated_data)        
        if "image" in validated_data.keys():
            images = validated_data.pop('image')
        else:
            pass
        post = Post.objects.create(**validated_data)    
        instance.image.add(r_data)
        return post

Viewsets :

class PostViewSet(ModelViewSet):
    serializer_class = PostSerializer
    queryset = Post.objects.all()

Peter Evance · Accepted Answer · 2021-09-28 15:37:23Z

1

Refactored the create method of the serializer and it now works

def create(self, validated_data):
        request = self.context['request']
        r_data = self.context['request'].FILES
            
        post = Post.objects.create(**validated_data)
        
        if 'image' in r_data:
            post_image = PostImage.objects.create(image=r_data['image'])
            post.image.add(post_image)
        else:
            pass
        return post

answered Sep 28, 2021 at 15:37

Peter Evance

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