how to make parse of list(string) not list(char) in parse argument of list? - python-3.x

Question

I use flask_restful in flask
My code like:
from flask_restful import Resource, reqparse
apilink_parser = reqparse.RequestParser()
apilink_parser.add_argument('provider_id', type=int,required=True)
apilink_parser.add_argument('name', type=str, required=True)
apilink_parser.add_argument('func_id', type=int)
apilink_parser.add_argument('method', type=str)
apilink_parser.add_argument('url', type=str)
apilink_parser.add_argument('parameter',type=list)
apilink_parser.add_argument("expectreturn", type=list)
#marshal_with(apilink_fields)
def post(self):
args = apilink_parser.parse_args()
print(args)
# user owns the task
task = APILink.create(**args)
return task, 201
My json post data like:
{
"name":"riskiqwhois",
"provider_id":1,
"func_id":1,
"url":"myurl",
"parameter":["query"], //******//
"expectreturn":[],
"method":"post"
}
but when I print the arrgs the result is:
{
'provider_id': 1,
'name': 'riskiqwhois',
'func_id': 1,
'method': 'post',
'url': 'myurl',
'parameter': ['q', 'u', 'e', 'r', 'y'], //******//
'expectreturn': None
}
I want
You can see I want parameter is list of string which is only one element named "query", but the real parameter tranlate into the database is ['q', 'u', 'e', 'r', 'y'], How to make the parameter is list of string not list of char? how to make sure the data is list(string)?

Answer 1

Well, you forgot to set action="append" and you should change from type=list to type=str.
If not, you will still be getting a result like [['q', 'u', 'e', 'r', 'y']].
...
apilink_parser.add_argument('parameter',type=str, action='append')
apilink_parser.add_argument("expectreturn", type=str, action='append')

Answer 2

You can solve this problem by adding action="append" to your request parser
like below
apilink_parser.add_argument('parameter',type=str,action="append")
apilink_parser.add_argument("expectreturn", type=list,action="append")
this will return you below output
{
'provider_id': 1,
'name': 'riskiqwhois',
'func_id': 1,
'method': 'post',
'url': 'myurl',
'parameter': ['query'],
'expectreturn': None
}