How to make subscriptions with graphene v3

Hi,

I’m trying to use subscriptions in graphene 3.

My naive example below doesn’t work. How do I do this?

Thanks, Rob

import asyncio
from datetime import datetime
from graphene import ObjectType, String, Schema, Field

class Query(ObjectType):
    hello = String()

    def resolve_hello(root, info):
        return 'Hello, world!'

class Subscription(ObjectType):
    time_of_day = Field(String)

    async def resolve_time_of_day(root, info):
        while True:
            yield datetime.now().isoformat()
            await asyncio.sleep(1)

schema = Schema(query=Query, subscription=Subscription)

async def main():
    subscription = 'subscription { timeOfDay }'
    result = await schema.execute_async(subscription)
    async for item in result:
        print(item)

asyncio.run(main())

[rob-blackbourn]

I written this up: https://medium.com/@rob.blackbourn/graphene-3-queries-mutations-subscriptions-a699926ca469

[rob-blackbourn]

Hi @hyusetiawan and @SenthilKumaranC

I’ve made a repo here with a working example of graphene 3 with queries, mutations, and subscriptions, using twitter as the data source.

I will write a tutorial of this fairly soon, but this may be useful to you as it is.

BTW ti uses a fork of graphene3 which includes a fix that hasn’t yet been included in a published package.

I’d appreciate any feedback you have.

Rob