Switching component state for Redux state

The saga and reducer are now complete and ready to be used in the CustomerForm React component. In this section, we’ll replace the use of doSave, and then as a final flourish, we’ll push our React Router navigation into the saga, removing the onSave callback from App.

Submitting a React form by dispatching a Redux action

At the start of the chapter, we looked at how the purpose of this change was essentially a transplant of CustomerForm’s doSave function into a Redux action.

With our new Redux setup, we used component state to display a submitting indicator and show any validation errors. That information is now stored within the Redux store, not component state. So, in addition to dispatching an action to replace doSave, the component also needs to read state from the store. The component state variables can be deleted.

This has a knock-on effect on our tests. Since the saga tests the failure modes, our component...