def post(self):
'''
HTTP POST Method Handler
Creates new coupon
'''
params = self.load_json_params({
'business': (int, True),
'name': (str, True),
'description': (str, False),
'start': (str_to_datetime, True),
'end': (str_to_datetime, True)
})
business_key = ndb.Key('Business', params['business'])
authenticate(business_key.get())
params['business'] = business_key
key = Coupon(**self.params).put()
self.status = '200 OK'
self.response.write('/api/coupon/' + str(key.id()))
