Edit component empty

[HamAndRock]

What you were expecting:
To render edit form

What happened instead:
Nothing rendered

Steps to reproduce:
Create new resource, add Edit component and add if in dataProvider.

Data provider implementation:

Edit form implementation:

Resource implementation:

Result:

Other information:
I can get data from dataProvider when I use useDataProvider().getOne it works, hovewer when I use just useGetOne it returns undefined again.

Request like create, list and even some other edits work.

Environment

• React-admin version: 3.8.2
• React version: 16.13.1
• Browser: Chrome
• Stack trace (in case of a JS error): none

[djhi]

Thanks for reporting this. Please provide a sample application showing the issue by forking the following CodeSandbox (https://codesandbox.io/s/github/marmelab/react-admin/tree/master/examples/simple).

[MicroJackson]

I have this exact same behaviour when my API call does not return an ID in his response described here:
https://marmelab.com/react-admin/DataProviders.html#example-implementation
So make sure there is an:
"id": 123 or something in your response. I do not see that in your response in the console.
An improvement for react-admin would be to notify the programmer of this fact.

[HamAndRock]

Yes, and also the if you supply different id then in url it also doesn't work.
I took me 6 hours to figure out ....

Please can you add some kind of console warning ?

[fzaninotto]

There is, indeed, a console warning if the return from dataProvider.getOne() doesn't contain an id key:

react-admin/packages/ra-core/src/dataProvider/validateResponseFormat.ts

Lines 43 to 51 in 14c3111

	if (
	fetchActionsWithRecordResponse.includes(type) &&
	!response.data.hasOwnProperty('id')
	) {
	logger(
	`The response to '${type}' must be like { data: { id: 123, ... } }, but the received data does not have an 'id' key. The dataProvider is probably wrong for '${type}'`
	);
	throw new Error('ra.notification.data_provider_error');
	}

But it doesn't show up if your NODE_ENV variable is set to production. Could it be that problem?

[MicroJackson]

No, my NODE_ENV is in development mode, and I have never changed it in all 3 of my react-admin projects.

I tried to make a codesandbox to demonstrate it, but the DataProvider can not give the wrong id, or omit the id.

So I tried to create a simple example:

The dataProvider.getOne() fetches that.

Nothing shows, and there is no log in the console.
And it does do a valid request to my backend:

So I do not know when that piece of code needs to be triggered, but it is not being triggered for me. Do note that I am using my own dataprovider, same as OP.

[fzaninotto]

Reproduced, thanks.