Breaking change in ra-data-json-server between 2.7.0 and 2.7.3

What you were expecting:
I am not sure if you're following Semver, but if you are - somewhere between version 2.7.0 and 2.7.3, ra-data-json-server caused a breaking change, with this commit, because it no longer sends the id_like parameter, instead it sends the resources id field to get related resources.

Also, instead of a list of ids separated by a pipe (|) character, it now sends the same parameter twice when it wants to get more than one resource item, e.g. to get category 8 and category 203 it sends http://localhost:9000/admin/categories?id=8&id=203 instead of http://localhost:9000/admin/categories?id_like=8%7C203

What happened instead:
Semver wasn't used.

Steps to reproduce:
Install the newest version 2.7.3 after being on 2.7.0.

Related code:
none

Other information:
none

Environment

• React-admin version: 2.7.3
• Last version that did not exhibit the issue (if applicable): 2.7.0
• React version: 16.8.4
• Browser: N/A
• Stack trace (in case of a JS error): N/A

[Kmaschta]

We do our best to follow semver and try not to break things between versions.

Sorry for that, and thanks for reporting the issue!

[fzaninotto]

I disagree that this is a breaking change. The ra-data-json-server adapter is designed to work against jsonServer. The patch you're referring to is part of a bugfix (cf #2873) designed to make ra-data-json-server work better against jsonServer.

Now if you're using this adapter against another server, that's at your own risk, and it's not something we support.

I apologize if the update broke your app, but you made the wrong assumption about the adapter you picked up.

No problem. I wasn't waiting for a fix and I already forked it and fixed it myself. I actually just chose ra-data-json-server because it was the simplest implementation that worked well with Swagger. Thanks!

[jheiska]

I have a problem with the new parameter format, and was wondering if it's just a problem with my data provider or does anyone else experience this?
If I use a ReferenceField and there happens to be only one id referenced, the request is naturally made with a single id, resulting in a similar request to a GET_ONE. The problem is, GET_MANY is expecting an array and GET_ONE returns only a single resource, thus resulting in a data provider error.
EDIT: I use asp.net webapi and address/resource/1 and address/resource?id=1 are interpreted as similar requests.

[Kmaschta]

No one will get attention to your question on a closed issue, prefer to ask it on Stack OverFlow.

@jheiska The ra-data-json-server is just one file, so it's easy to bring into your project if you want to use the previous version.