How can I use fast api dependency injection in ariadne?

[MilanRgm]

If used starlette graphqlapp then we can do the following

from starlette.graphql import GraphQLApp

graphql_app = GraphQLApp(schema=graphene.Schema(query=Query))

@app.get('/')
async def graphiql(request: Request):
    request._url = URL('/gql')
    return await graphql_app.handle_graphiql(request=request)

@app.post('/gql')
async def graphql(request: Request, db: Session = Depends(get_db)):
    request.state.db = db
    return await graphql_app.handle_graphql(request=request)

but I have no idea while using ariadne. Initially, I tried to use dependency injection as following

async def resolve_graphql_context(
    request: Request, db: Session = Depends(get_db)
) -> GraphQLContext:
    return await get_graphql_context(request, db)
graphql = GraphQL(schema, debug=True, context_value=resolve_graphql_context)

But I came to know that it works only on fastapi route. How can I now use it on ariadne?

[Tushant]

I think you want to use graphql_http_server as return await graphql.graphql_http_server(request=request) for POST operation and render_playground for the case of handle_graphiql for GET operation.

I hope this helps you.

[ppbpdx]

This is no longer supported in the latest version of ariadne.

    return await GraphQL(queries_and_mutations_schema, debug=True).http_handler(
TypeError: 'GraphQLHTTPHandler' object is not `callable`

[rafalp]

@ppbpdx provided updated response below, can you let me know if that works for you?

[ppbpdx]

Test the updated solution and it works. Thank you for the update!

[rafalp]

@Tushant response updated for Ariadne 0.16 and later:

# Unpack HTTP handler from `GraphQL` app:
graphql_app = GraphQL(schema).http_handler


@app.get('/')
async def graphiql(request: Request):
    request._url = URL('/gql')
    return await graphql_app.render_playground(request)


@app.post('/gql')
async def graphql(request: Request, db: Session = Depends(get_db)):
    request.state.db = db
    return await graphql_app.graphql_http_server(request)

I agree we could do better here. So here's #998 to track this.