Streamlining Async Flow in React with Redux-Saga and Redux-Toolkit

To get updated data from the Redux store and pass it to a Saga, you can use the select effect provided by redux-saga. The select effect allows you to access the current state of the store and use it in your Saga.

Here's an example of how you might use the select effect in a Saga:

In this example, the fetchDataSaga uses the select effect to get the current state of the store, it will use it to pass the necessary state as an argument to the API call and make the call.

It will dispatch the success/error actions with the corresponding data received from the API.

You can also pass a function as an argument to the select effect to more specifically select the data you need from the store, like this:

It is important to remember that state changes in the store are asynchronous, so if your component dispatches an action that updates the state and triggers the saga to be called, it is likely that the state used in the saga is the state before the change.

Second Approach:-

Another way to get updated data from the store to the saga is to listen to the action dispatched by the component that triggers the state change in the store and gets the state from the action payload, like this:

This way, the saga listens to the action that carries the updated state and uses it as an argument.

Both ways will work but you can decide which one is the best approach depending on your use case, but they both should give you the updated state.

Conclusion:

Finally, incorporating both redux-saga and redux-toolkit into your React app can provide a powerful solution for managing async logic and state. You can create a scalable and maintainable application by using redux-toolkit for state management and redux-saga for async logic and side effects. You can also get the updated state from the store to the saga by using the select effect or bypassing the state as an argument via the action payload and handling the async logic in the saga.