Editing Global State in react-admin

I recently came across a question on StackOverflow of someone who was asking how to change the global state of a resource. I answered the question as it was asked, but then gave an explanation of why that is a bad idea.

Answer

Access Redux Store

You can access the redux store using the useSelector hook made available by the react-redux module.

import { useSelector } from "react-redux";

function myComponent() {
  const myReduxData = useSelector(path.to.your.redux.key);

  return <p>myReduxData</p>;
}

Modify Redux Store

To modify data in the redux store you would write a custom reducer. You can hook into many of the actions that are fired automatically by react-admin. https://marmelab.com/react-admin/Admin.html#customreducers

Redux is an implementation detail

Although I gave direction with the above, I would highly recommend not going about it this way. React-admin views redux as an implementation detail (see the bottom of this blog https://marmelab.com/blog/2020/04/27/react-admin-tutorials-custom-forms-related-records.html)

That means you should never update redux directly. A future version of react-admin could realistically replace redux with something else which would break your app. I believe they are waiting for react to release single feature that would make react context versatile enough to replace redux.

What's the Problem You're Trying to Solve?

In most cases there is a better, more blessed way to update the global state. Don’t try and update anything to do with the inner workings of react-admin such as resources. You might as well build your own framework as you’re bypassing everything that makes react-admin great.