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README.md

aiohttp-graphql

Adds GraphQL support to your aiohttp application.

Based on flask-graphql by Syrus Akbary and sanic-graphql by Sergey Porivaev.

PyPI version Build Status Coverage Status

Usage

Use the GraphQLView view from aiohttp_graphql

from aiohttp import web
from aiohttp_graphql import GraphQLView

from schema import schema

app = web.Application()

GraphQLView.attach(app, schema=schema, graphiql=True)

# Optional, for adding batch query support (used in Apollo-Client)
GraphQLView.attach(app, schema=schema, batch=True, route_path="/graphql/batch")

if __name__ == '__main__':
    web.run_app(app)

This will add /graphql endpoint to your app (customizable by passing route_path='/mypath' to GraphQLView.attach) and enable the GraphiQL IDE.

Note: GraphQLView.attach is just a convenience function, and the same functionality can be achieved with

gql_view = GraphQLView(schema=schema, graphiql=True)
app.router.add_route('*', '/graphql', gql_view, name='graphql')

It's worth noting that the the "view function" of GraphQLView is contained in GraphQLView.__call__. So, when you create an instance, that instance is callable with the request object as the sole positional argument. To illustrate:

gql_view = GraphQLView(schema=Schema, **kwargs)
gql_view(request)  # <-- the instance is callable and expects a `aiohttp.web.Request` object.

Supported options for GraphQLView

  • schema: The GraphQLSchema object that you want the view to execute when it gets a valid request.
  • context: A value to pass as the context_value to graphql execute function. By default is set to dict with request object at key request.
  • root_value: The root_value you want to provide to graphql execute.
  • pretty: Whether or not you want the response to be pretty printed JSON.
  • graphiql: If True, may present GraphiQL when loaded directly from a browser (a useful tool for debugging and exploration).
  • graphiql_version: The graphiql version to load. Defaults to "1.0.3".
  • graphiql_template: Inject a Jinja template string to customize GraphiQL.
  • graphiql_html_title: The graphiql title to display. Defaults to "GraphiQL".
  • jinja_env: Sets jinja environment to be used to process GraphiQL template. If Jinja’s async mode is enabled (by enable_async=True), uses Template.render_async instead of Template.render. If environment is not set, fallbacks to simple regex-based renderer.
  • batch: Set the GraphQL view as batch (for using in Apollo-Client or ReactRelayNetworkLayer)
  • middleware: A list of graphql middlewares.
  • max_age: Sets the response header Access-Control-Max-Age for preflight requests.
  • encode: the encoder to use for responses (sensibly defaults to graphql_server.json_encode).
  • format_error: the error formatter to use for responses (sensibly defaults to graphql_server.default_format_error.
  • enable_async: whether async mode will be enabled.
  • subscriptions: The GraphiQL socket endpoint for using subscriptions in graphql-ws.
  • headers: An optional GraphQL string to use as the initial displayed request headers, if not provided, the stored headers will be used.
  • default_query: An optional GraphQL string to use when no query is provided and no stored query exists from a previous session. If not provided, GraphiQL will use its own default query.
  • header_editor_enabled: An optional boolean which enables the header editor when true. Defaults to false.
  • should_persist_headers: An optional boolean which enables to persist headers to storage when true. Defaults to false.

Contributing

Since v3, aiohttp-graphql code lives at graphql-server repository to keep any breaking change on the base package on sync with all other integrations. In order to contribute, please take a look at CONTRIBUTING.md.

License

Copyright for portions of project aiohttp-graphql are held by Syrus Akbary as part of project flask-graphql and sanic-graphql as part of project Sergey Porivaev. All other claims to this project aiohttp-graphql are held by Devin Fee.

This project is licensed under the MIT License.