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Python Flask REST API Resourceful Blueprints Parse the Request

Posted by liamthornback2
liamthornback2
9,618 Points

Not sure what I did wrong

I have added all the arguments the question told me to add and I still get back an error message implying that I didn't add any arguments. Can anyone see where I went wrong?

resources/ingredients.py 
from flask import Blueprint

from flask.ext.restful import Resource, Api, reqparse, inputs

import models


class IngredientList(Resource):
    def __init__(self):
        self.reqparse = reqparse.RequestParser()
        self.reqparse.add_argument(
            'name',
            required=True,
            help="no name provided",
            location=["form", "json"],
        )
        self.reqparse.add_argument(
            'description',
            required=True,
            help="no description provided",
            location=["form", "json"],
        )
        self.reqparse.add_argument(
            'measurement_type',
            required=True,
            help="no measurement type provided",
            location=["form", "json"],
        )
        self.reqparse.add_argument(
            'quantity',
            required=True,
            help="no measurement type provided",
            location=["form", "json"],
            type = inputs.float
        )
        self.reqparse.add_argument(
            'recipe',
            required=True,
            help="no measurement type provided",
            location=["form", "json"],
            type = inputs.positive
        )
        super().__init__()
    def get(self):
        return 'IngredientList'


class Ingredient(Resource):
    def get(self, id):
        return 'Ingredient'

ingredients_api = Blueprint('resources.ingredients', __name__)
api = Api(ingredients_api)
api.add_resource(IngredientList, '/api/v1/ingredients')
api.add_resource(Ingredient, '/api/v1/ingredients/<int:id>')

1 Answer

Jennifer Nordell
seal-mask
STAFF
.a{fill-rule:evenodd;}techdegree
Jennifer Nordell
Treehouse Teacher
Jennifer Nordell
.a{fill-rule:evenodd;}techdegree
Jennifer Nordell
Treehouse Teacher

Hi there, Liam Thornback ! You're doing terrific and I agree that this particular Bummer! message is suboptimal. One would think that you have added no arguments whatsoever which, obviously, is not the case. The key to your error is in this instruction:

quantity should be a normal Python float

In the quantity argument you have this:

type = inputs.float

But you are meant to have:

type = float

That's it! Removing the inputs. causes this to pass the challenge. Well done! :sparkles:

liamthornback2
liamthornback2
9,618 Points

Oh thanks so much.

I'm still a beginner with Python so I might have just not even thought about the built in types.