React-admin: Cannot read property 'split' of null on fetching

[cAstraea]

After trying out the example with the jsonplaceholder data tried to integrate it with my own JSON but getting this message. Is there an issue with my data?

[tr33m4n]

Hi there,

Are you using the simple rest client or your own? This is caused by the convertHTTPResponseToREST function attempting to parse a header that's not present in your response.

You will have to modify the headers your API returns or create a custom REST adapter http://marmelab.com/admin-on-rest/RestClients.html

Cheers

[cAstraea]

Hello, I was using the jsonServerRestClient , just modified the back end to match the jsonplaceholder one and kept the same query string _sort, _order ,_start and _end
Thought it would be enough. Will try to mimic the same response headers jsonplaceholder uses.

For the moment just wanted to get GET_LIST working to test something really quick with my data.
Thanks 🍰
Edit: Think I found the piece you were talking about in https://github.com/marmelab/admin-on-rest/blob/master/src/rest/jsonServer.js , it's looking for an x-total-count header when using the jsonServerRestClient. Strangely though the https://jsonplaceholder.typicode.com/posts doesn't seem to return one yet it works.

[cAstraea]

I have added the total-count header yet it still reports the same ? What could I be missing

[fzaninotto]

https://jsonplaceholder.typicode.com/posts does not have a x-total-count header, but
https://jsonplaceholder.typicode.com/posts?_page=1 does have it because it enables pagination.

When using JSONPlaceholder, you must add the pagination parameters to let admin-on-rest use it.

I'll update the default REST clients to fail more explicitly if the header is missing.

[fzaninotto]

Also, if you have added the X-Total-Count header but admin-on-rest doesn't see it, I guess it's because you're using CORS but you didn't declare the X-Total-Count in the Access-Control-Allow-Headers header.