def create(cls, scientist_dict=None, scientist_photo=None, test_mode=False):
# check if user can create account
yield cls.validate_credentials(scientist_dict)
# create ID
if test_mode:
scientist_id = scientist_dict.get(u'id')
else:
scientist_id = generate_id(21)
# create account
yield cls.update_roles(scientist_id, scientist_dict)
editable_data = Scientist.get_editable_data(scientist_dict, update=False)
editable_data.update(id=scientist_id)
image_url = yield cls.upload_avatar(scientist_id, scientist_photo)
if image_url:
editable_data.update(image_url=image_url)
scientist = Scientist(**editable_data)
yield scientist.save(update=False, fields=editable_data.keys())
image_url = globals.GET_IMG(image_url, globals.IMG_S) if image_url else u''
raise gen.Return(dict(scientist_id=scientist_id, image_url=image_url))
