Skip to main content

Flask-Rebar combines flask, marshmallow, and swagger for robust REST services.

Project description

Documentation Status CI Status PyPI status Code style Code of Conduct

Flask-Rebar combines flask, marshmallow, and swagger for robust REST services.

Features

  • Request and Response Validation - Flask-Rebar relies on schemas from the popular Marshmallow package to validate incoming requests and marshal outgoing responses.

  • Automatic Swagger Generation - The same schemas used for validation and marshaling are used to automatically generate OpenAPI specifications (a.k.a. Swagger). This also means automatic documentation via Swagger UI.

  • Error Handling - Uncaught exceptions from Flask-Rebar are converted to appropriate HTTP errors.

Example

from flask import Flask
from flask_rebar import errors, Rebar
from marshmallow import fields, Schema

from my_app import database


rebar = Rebar()

# All handler URL rules will be prefixed by '/v1'
registry = rebar.create_handler_registry(prefix='/v1')

class TodoSchema(Schema):
    id = fields.Integer()
    complete = fields.Boolean()
    description = fields.String()

# This schema will validate the incoming request's query string
class GetTodosQueryStringSchema(Schema):
    complete = fields.Boolean()

# This schema will marshal the outgoing response
class GetTodosResponseSchema(Schema):
    data = fields.Nested(TodoSchema, many=True)


@registry.handles(
    rule='/todos',
    method='GET',
    query_string_schema=GetTodosQueryStringSchema(),
    response_body_schema=GetTodosResponseSchema(), # for versions <= 1.7.0, use marshal_schema
)
def get_todos():
    """
    This docstring will be rendered as the operation's description in
    the auto-generated OpenAPI specification.
    """
    # The query string has already been validated by `query_string_schema`
    complete = rebar.validated_args.get('complete')

    ...

    # Errors are converted to appropriate HTTP errors
    raise errors.Forbidden()

    ...

    # The response will be marshaled by `marshal_schema`
    return {'data': []}


def create_app(name):
    app = Flask(name)
    rebar.init_app(app)
    return app


if __name__ == '__main__':
    create_app(__name__).run()

For a more complete example, check out the example app at examples/todo.py. Some example requests to this example app can be found at examples/todo_output.md.

Installation

pip install flask-rebar

Documentation

More extensive documentation can be found here.

Extensions

Flask-Rebar is extensible! Here are some open source extensions:

Contributing

There is still work to be done, and contributions are encouraged! Check out the contribution guide for more information.

Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Source Distribution

flask-rebar-2.3.0.tar.gz (4.2 MB view hashes)

Uploaded Source

Built Distribution

flask_rebar-2.3.0-py2.py3-none-any.whl (4.3 MB view hashes)

Uploaded Python 2 Python 3

Supported by

AWS AWS Cloud computing and Security Sponsor Datadog Datadog Monitoring Fastly Fastly CDN Google Google Download Analytics Microsoft Microsoft PSF Sponsor Pingdom Pingdom Monitoring Sentry Sentry Error logging StatusPage StatusPage Status page