def post(self):
'''
HTTP POST Method Handler
Gives user a coupon
'''
authenticate(self.get_uid())
user = User.get_by_id(self.get_uid())
coupon = Coupon.get_by_id(self.get_cid())
if not coupon:
self.abort(400)
if not user:
self.abort(400)
if coupon.key not in user.held_coupons:
user.held_coupons.append(coupon.key)
user.put()
self.response.status = '200 OK'
self.response.write('/api/user/' + str(user.key.id()))
