Flask Restful

Flaskrestful.marshal(data, fields, envelope=None) ¶ Takes raw data (in the form of a dict, list, object) and a dict of fields to output and filters the data based on those fields. Flask REST API Tutorial. REST API services let you interact with the database by simply doing HTTP requests. In this article you learn how to write a REST server using the Flask. This is often how the backend of web apps is created. Returning data is in JSON format and requests we are using are PUT, DELETE, POST, and GET. Flask-RESTful tries to be as flexible as possible, but sometimes you might find that the builtin functionality is not enough to meet your needs. Flask-RESTful has a few different extension points that can help in that case. An example of using a Flask-Restful module with several version of API and using unittest.

  1. Python Flask Restful
  2. Flask Restful Vs

flask-restful-swagger is a wrapper forflask-restfulwhich enables swaggersupport.

In essense, you just need to wrap the Api instance and add a few pythondecorators to get full swagger support.

Flask restful authentication


(This installs flask-restful as well)

And in your program, where you’d usually just use flask-restful, addjust a little bit of sauce and get a swagger spec out.

Let us recap usage of @marshal_with. flask-restful has a decorator@marshal_with. With the following setup it’s possible to define theswagger model types with the same logic as @marshal_with.

You have to:


Now run your flask app

And visit:

When creating the swagger.docs object you may pass additionalarguments, such as the following:

Assuming you provided swagger.docs with a parameterapi_spec_url='/api/spec' (or left out in which case the default is‘/api/spec’) you may access the resulting json at /api/spec.json. Youmay also access /api/spec.html where you’d find an interactive HTML pagethat lets you play with the API to some extent.

Here’s how this HTML page would look like:

flask-restful-swagger adds some useful help pages (well, json documents)to each of your resources. This isn’t part of the swagger spec, butcould be useful anyhow. With each endpoint you register, there’s also anautomatically registered help endpoint which ends with a .help.jsonextension. So for example when registering the resourceapi.add_resource(TodoList,'/todos') you may access the actual apithrough the url /todos and you may also access the help page at/todos.help.json. This help page spits out the relevant json contentonly for this endpoint (as opposed to /api/spec.json which spits outthe entire swagger document, which could be daunting)

Python Flask Restful


When registering an endpoint with path parameters (e.g./todos/<string:id>) then the .help url is may be found at theswagger path, e.g. /todos/{id}.help.json where {id} is just that - aliteral string “{id}”


Similarly to the .help.json URLs we have .help.html pages whichare static HTML pages to document your APIs. Here’s a screenshot toillustrate:

Flask Restful Vs

This project is part of the `Cloudify Cosmoproject <https://github.com/CloudifySource/>`__