flask-apispec
flask-apispec is a lightweight tool for building REST APIs in Flask. flask-apispec uses webargs for request parsing, marshmallow for response formatting, and apispec to automatically generate Swagger markup. You can use flask-apispec with vanilla Flask or a fuller-featured framework like Flask-RESTful.
Install
pip install flask-apispec
Quickstart
from flask import Flask
from flask_apispec import use_kwargs, marshal_with
from marshmallow import Schema
from webargs import fields
from .models import Pet
app = Flask(__name__)
class PetSchema(Schema):
class Meta:
fields = ('name', 'category', 'size')
@app.route('/pets')
@use_kwargs({'category': fields.Str(), 'size': fields.Str()})
@marshal_with(PetSchema(many=True))
def get_pets(**kwargs):
return Pet.query.filter_by(**kwargs)
flask-apispec works with function- and class-based views:
from flask import make_response
from flask_apispec.views import MethodResource
class PetResource(MethodResource):
@marshal_with(PetSchema)
def get(self, pet_id):
return Pet.query.filter(Pet.id == pet_id).one()
@use_kwargs(PetSchema)
@marshal_with(PetSchema, code=201)
def post(self, **kwargs):
return Pet(**kwargs)
@use_kwargs(PetSchema)
@marshal_with(PetSchema)
def put(self, pet_id, **kwargs):
pet = Pet.query.filter(Pet.id == pet_id).one()
pet.__dict__.update(**kwargs)
return pet
@marshal_with(None, code=204)
def delete(self, pet_id):
pet = Pet.query.filter(Pet.id == pet_id).one()
pet.delete()
return make_response('', 204)
flask-apispec generates Swagger markup for your view functions and classes. By default, Swagger JSON is served at /swagger/, and Swagger-UI at /swagger-ui/.
from apispec import APISpec
from apispec.ext.marshmallow import MarshmallowPlugin
from flask_apispec.extension import FlaskApiSpec
app.config.update({
'APISPEC_SPEC': APISpec(
title='pets',
version='v1',
plugins=[MarshmallowPlugin()],
),
'APISPEC_SWAGGER_URL': '/swagger/',
})
docs = FlaskApiSpec(app)
docs.register(get_pets)
docs.register(PetResource)
Documentation
https://flask-apispec.readthedocs.io/
Notes
flask-apispec is strongly inspired by Flask-RESTful and Flask-RESTplus, but attempts to provide similar functionality with greater flexibility and less code.
