Hey, I'm trying to use react-admin with a API built on SST. I'm getting this error.

Error: The Content-Range header is missing in the HTTP Response. The simple REST data provider expects responses for lists of resources to contain this header with the total number of results to build the pagination. If you are using CORS, did you declare Content-Range in the Access-Control-Expose-Headers header?

I try to pass the requested header on the response. But still i'm getting this error. What did i miss?

return {
            statusCode: 200,
            headers: {
                'Content-Type': 'application/json',
                'Content-Range': 'results 0-24/319'
            },
            body: JSON.stringify(results),
        };

Hey @Sahan Amadoruge, I think it’s looking for the header for the CORS request. Can you try setting the cors option for the Api like this:

new sst.Api(this, "Api", {
  cors: {
    exposeHeaders: ["Content-Range"]
  },
});

Thank you @Frank. I'll try this

Sorry, missed ur earlier msg. Can you try

import * as apig from "@aws-cdk/aws-apigatewayv2-alpha";

...

cors: {
        exposeHeaders: ["Content-Range"],
        allowHeaders: ["*"],
        allowMethods: [apig.CorsHttpMethod.ANY],
        allowOrigins: ["*"],
      },

It's ok. Thanks I'll try this <3

Sorry for the late reply. Yup, it’s been quite stable.

Thanks