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.. _SchemaSubscription:
Subscriptions
=============
To create a subscription, you can directly call the ``subscribe`` method on the
schema. This method is async and must be awaited.
.. code:: python
import asyncio
from datetime import datetime
from graphene import ObjectType, String, Schema, Field
# Every schema requires a query.
class Query(ObjectType):
hello = String()
def resolve_hello(root, info):
return "Hello, world!"
class Subscription(ObjectType):
time_of_day = String()
async def subscribe_time_of_day(root, info):
while True:
yield datetime.now().isoformat()
await asyncio.sleep(1)
schema = Schema(query=Query, subscription=Subscription)
async def main(schema):
subscription = 'subscription { timeOfDay }'
result = await schema.subscribe(subscription)
async for item in result:
print(item.data['timeOfDay'])
asyncio.run(main(schema))
The ``result`` is an async iterator which yields items in the same manner as a query.
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