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Python Flask REST API Resourceful Blueprints Marshalling

Posted by Iain Simmons
Iain Simmons
Treehouse Moderator 32,305 Points

Flask-RESTful provides an abort method with custom messages

Hi Kenneth Love, just letting you know that while you can't pass a message keyword argument to Flask's abort method, you can pass it to Flask-RESTful's abort.

So the following would work:

courses.py 
from flask import Blueprint
from flask.ext.restful import (Resource, Api, reqparse, inputs, fields,
                               marshal, marshal_with, abort)

import models


course_fields = {
    'id': fields.Integer,
    'title': fields.String,
    'url': fields.String,
    'reviews': fields.List(fields.String)
}


def add_reviews(course):
    course.reviews = [url_for('resources.reviews.review', id=review.id)
                      for review in course.review_set]
    return course


def course_or_404(course_id):
    try:
        course = models.Course.get(models.Course.id==course_id)
    except models.Course.DoesNotExist:
        abort(404, message='Course {} does not exist'.format(course_id))
    else:
        return course

1 Answer

Kenneth Love
STAFF
Kenneth Love
Treehouse Guest Teacher
Kenneth Love
Kenneth Love
Treehouse Guest Teacher

Ah, I bet that's what happened. When I built the project while writing the lesson, I probably used the abort from flask-restful instead of from flask itself. Good catch!