def add_distributor(data, instance_id=""):
if instance_id:
distributor = Distributor.get_by_id(int(instance_id))
else:
distributor = Distributor()
if data["name"]:
distributor.name = data["name"]
if data["contact_num"]:
distributor.contact_num = data["contact_num"]
if data["email"]:
distributor.email = data["email"]
if data["website"]:
distributor.website = data["website"]
if data["facebook"]:
distributor.facebook = data["facebook"]
distributor.put()
return distributor
