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Modifying GraphQL Schema in AWS Amplify

Have you ever created a sample AWS Amplify application and wanted to extend the DynamoDB database schema ? This post explains how to add a single owner parameter to the schema definition and any pitfalls that you may experience

AWS Amplify

AWS Amplify provides the authentication, Graph API, serverless and CI/CD capabilities in an easy to use format. This post assumes knowledge of these AWS services and that you have created a sample react notes app from the example here 

Adding Owner Column

To add the owner column to the model, update the amplify/backend/api/reactamplified/schema.graphql file as follows

and add the following authentication information 
Execute an amplify push command and ensure that the API is deployed successfully

Fix Cognito User Pool Error

If you receive the following error:

@auth directive with 'userPools' provider found, but the project has no Cognito User Pools authentication provider configured. 

Execute the command amplify update api and update the auth settings, ensuring that you select "Amazon Cognito User Pool" as the default authorization type for the API

Check the Database

Perform a new insert operation and confirm that the DynamoDB table now has the owner column



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