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This error happens when you try to use subscriptions in your URQL app but don’t have a subscription exchange. Fix this by installing subscriptions-transport-ws and adding the subscriptionExchange to your URQL config. This error was discovered when writing the real-time chat app example. If you haven’t already, you should check it out. Let’s look at … Read more
This error occurs when you pass a Strawberry type to strawberry.Schema as the query parameter, but that type doesn’t define any fields. To fix this, define at least one field on the type you passed as the query argument. I came across this error when working on the real-time chat app GraphQL example. Since I … Read more
The code for this example can be found on GitHub here: https://github.com/jmgraff/strawberry-graphql-chat-app. This project builds off our previous full-stack GraphQL example. If you’re new to GraphQL and haven’t read it yet, you should check it out. What we’re making We’re going to make a real-time chat application using GraphQL subscriptions. GraphQL subscriptions are implemented with … Read more
This Strawberry GraphQL error occurs when you have selected a field in your GraphQL query that has subfields, but didn’t specify them. To fix this, simply add the fields you want in brackets after the field that’s causing the error. So, instead of query{ foo }, you’d put query{ foo { bar }}. Forgetting subfields … Read more
The source code for this article is available on GitHub: https://github.com/jmgraff/fastapi-strawberry-urql This example will walk you through creating a docker compose based full-stack GraphQL API using FastAPI+Strawberry on the backend, and React+URQL on the frontend. The associated GitHub repo is a template and is designed to be used as a starting point for new GraphQL … Read more