The X-Total-Count header is missing in the HTTP Response

[vaheeds]

Hi,
I'm using this backend in combination with react-admin as frontend. Where do I need to modify to get rid of this error?

The X-Total-Count header is missing in the HTTP Response. The jsonServer 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 X-Total-Count in the Access-Control-Expose-Headers header?

[fernandocanizo]

I haven't tested this, so try it and give us feedback please: you should add in the cors options the X-Total-Count in the exposedHeaders field.

Then to actually send the header with the page count, in the controller you should add a

res.setHeader("X-Total-Count", `${pageCount}`);

Also, I don't know about your react-admin thingy, but check if it accepts Total-Count as recommended by RFC 6648.

[vaheeds]

Thanks, I solved my issue ;like this:

const result = await categoryService.queryCategories(filter, options);
res.append('X-Total-Count', result.totalResults);
res.append('Access-Control-Expose-Headers', 'X-Total-Count');
res.send(result.data);