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Python Flask REST API Resourceful Blueprints Ingredient Resource

J T
J T
19,878 Points
Posted by J T
J T
19,878 Points

Error on Building Ingredient Module

My code doesn't seem to be working with building the Ingredient module and I haven't been able to determine why.

models.py 
import datetime

from peewee import *

DATABASE = SqliteDatabase('recipes.db')


class Recipe(Model):
    name = CharField()
    created_at = DateTimeField(default=datetime.datetime.now)

    class Meta:
        database = DATABASE

class Ingredient(Model):
    name = CharField()
    description = CharField()
    quantity = FloatField()
    measurement_type = CharField()
    recipe = ForeignKey(Recipe, 'recipe')

    class Meta:
        database = DATABASE


# TODO: Ingredient model
# name - string (e.g. "carrots")
# description - string (e.g. "chopped")
# quantity - decimal (e.g. ".25")
# measurement_type - string (e.g. "cups")
# recipe - foreign key
resources/ingredients.py 
from flask.ext.restful import Resource

import models

1 Answer

Nathan Tallack
Nathan Tallack
22,160 Points
Nathan Tallack
Nathan Tallack
22,160 Points

You were close.

Two things. Your quantity should be a DecimalField. Also, you typed the recipe as ForeignKey not ForeignKeyField. You also don't need the second parameter because it will implicitly use the classname_set default which is fine for this challenge. :)

So your model would look like this:

class Ingredient(Model):
    name = CharField()
    description = CharField()
    quantity = DecimalField()
    measurement_type = CharField()
    recipe = ForeignKeyField(Recipe)

    class Meta:
        database = DATABASE

Keep up the great work! :)