def create(self, validated_data):
request = self.context['request']
course_id = validated_data['course_id']
title = validated_data['title']
description = validated_data.get('description', '')
metadata = validated_data.get('metadata', None)
upload_result = self.handle_file_upload()
if 'upload_file_name' in upload_result:
title = upload_result['upload_file_name']
resource_attrs = {
"course": course_id,
"title": title,
"description": description,
"owner": request.user.profile,
"media_store": upload_result['media_store'],
"upload_file_name": upload_result['upload_file_name'],
"is_upload": upload_result['is_upload'],
}
# Metadata cannot be null, so only include if it's non-null
if metadata is not None:
resource_attrs['metadata'] = json.dumps(metadata)
resource = Resource(**resource_attrs)
resource.save()
return resource
def test_save_with_metadata(self):
title = "Test Resource"
course = TestResource.test_course
default_metadata = Resource.metadata_default()
missing_metadata = ("", None)
invalid_metadata = (None, True, False, 123, {})
valid_metadata = ([], [{"label":"X", "value": "Y"}])
# check that missing or invalid metadata values are saved using the default value
# for example the string "null" is not a valid value, so it should be overwritten with "[]"
for metadata in missing_metadata + invalid_metadata:
instance = Resource(course=course, title=title, metadata=metadata)
instance.save()
self.assertNotEqual(metadata, instance.metadata)
self.assertEqual(default_metadata, instance.metadata)
# check that valid metadata is saved unchanged
for metadata in valid_metadata:
instance = Resource(course=course, title=title, metadata=json.dumps(metadata))
instance.save()
self.assertEqual(json.dumps(metadata), instance.metadata)
