Flask extension for using "specification first" principle via OpenAPI specification.
Project description
Flask-First
Flask extension for using "specification first" principle.
Features:
Application Factory
supported.- Serializing
request.args
and storing result inrequest.first_args
. - Validating path parameters from url.
- Validating arguments from url.
- Validating JSON from request.
- Validating JSON from response.
- Provides a Swagger UI.
Limitations
- Full specification in one file.
Installing
Install and update using pip
:
$ pip install flask_first
Simple example
OpenAPI 3 specification file openapi.yaml
:
openapi: 3.0.3
info:
title: Simple API for Flask-First
version: 1.0.0
paths:
/{name}:
parameters:
- name: name
in: path
required: true
schema:
type: string
get:
operationId: index
summary: Returns a list of items
responses:
'200':
description: OK
content:
application/json:
schema:
type: object
properties:
message:
type: string
File with application initialization main.py
:
import os
from flask import Flask
from flask_first import First
basedir = os.path.abspath(os.path.dirname(__file__))
path_to_spec = os.path.join(basedir, 'openapi.yaml')
app = Flask(__name__)
app.config['FIRST_RESPONSE_VALIDATION'] = True
first = First(path_to_spec, app=app, swagger_ui_path='/docs')
def index(name):
return {'message': name}
first.add_view_func(index)
if __name__ == '__main__':
app.run()
Run application:
$ python main.py
Check url in browser http://127.0.0.1:5000/username
. Check SwaggerUI url in browser http://127.0.0.1:5000/docs
.
Settings
FIRST_RESPONSE_VALIDATION
- Default: False
. Enabling response body validation. Useful when
developing. May be disabled in a production environment.
Additional documentation
Project details
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