pp upload: image verification using serializers

profiles/serializers.py

@@ -1,5 +1,6 @@
 from rest_framework import serializers
 from .models import ProfileModel
+from django.conf import settings
 
 class ProfileSerializer(serializers.ModelSerializer):
 
@@ -9,3 +10,11 @@ class ProfileSerializer(serializers.ModelSerializer):
     class Meta:
         model = ProfileModel
         fields = ["username", "avatar", "user_id"]
+
+    def validate_avatar(self, value):
+        '''
+        Check that the image is not too large
+        '''
+        if value.size > settings.PROFILE_PICTURE_MAX_SIZE:
+            raise serializers.ValidationError('Image is too large.');
+        return value;