def post(self, name):
# item trying to add is already present in the items list
if ItemModel.find_by_name(name):
return {'message': "item '{0}' already exists".format(name)}, 400
# access class variable by ClassName.variable_name
request_data = Item.parser.parse_args()
item = ItemModel(name, request_data['price'], request_data['store_id'])
try:
item.upsert_item()
except:
return {'message': 'insertion to db failed'}, 500
# if error then execution will stop at return statement of except block
# if no error then return the item and success code
return item.get_json(), 201
def put(self, name):
data = Item.parser.parse_args()
# check whether item already exists
try:
item = ItemModel.find_by_name(name)
except:
return {'message': 'db search failed'}, 500
# if item exists then update it and write it to database,
# else create a new item and write it to database
if item:
item.price = data['price']
else:
item = ItemModel(name, data['price'])
# write the changes to database
try:
item.upsert_item()
except:
return {'message': 'database write failed'}, 500
return {"message": 'db write success'}, 200