Book Image

Mastering Flask

By : Jack Stouffer
Book Image

Mastering Flask

By: Jack Stouffer

Overview of this book

Starting from a simple Flask app, this book will walk through advanced topics while providing practical examples of the lessons learned. After building a simple Flask app, a proper app structure is demonstrated by transforming the app to use a Model-View-Controller (MVC) architecture. With a scalable structure in hand, the next chapters use Flask extensions to provide extra functionality to the app, including user login and registration, NoSQL querying, a REST API, an admin interface, and more. Next, you’ll discover how to use unit testing to take the guesswork away from making sure the code is performing as it should. The book closes with a discussion of the different platforms that are available to deploy a Flask app on, the pros and cons of each one, and how to deploy on each one.
Table of Contents (20 chapters)
Mastering Flask
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

POST requests


Using our new knowledge of the Flask Restful parser, the POST endpoint can be added. First, we will need a parser that will take a title, the body text, and a list of tags. In the parser.py file, add the following:

post_post_parser = reqparse.RequestParser()
post_post_parser.add_argument(
    'title',
    type=str,
    required=True,
    help="Title is required"
)
post_post_parser.add_argument(
    'text',
    type=str,
    required=True,
    help="Body text is required"
)
post_post_parser.add_argument(
    'tags',
    type=str,
    action='append'
)

Next, the PostApi class will need a post method to handle incoming requests. The post method will use the given values for the title and body text. Also, if the tags key exists, then add the tags to the post, which creates new tags if the passed ones do not exist:

import datetime
from .parsers import (
    post_get_parser,
    post_post_parser
)
from webapp.models import db, User, Post, Tag


class PostApi(Resource):
    …
    def...