Reduxjs toolkit update#
Reduxjs toolkit series#

Now that you are familiar with what Redux Toolkit is and the reason for its being, let me get to the main aim of this post: get introduced to using Redux Toolkit in an app using Next.js and TypeScript. It also comes loaded with some useful utilities that were popular with the standalone Redux, in order to handle the most common use cases. Simply put, Redux Toolkit provides us with tools that help abstract over the setup process that used to be troublesome. 'Redux requires too much boilerplate code'.'I have to add a lot of packages to get Redux to do anything useful'.'Configuring a Redux store is too complicated'.

Reduxjs toolkit update#

Components can still update state across the whole store as needed.To start with, according to the Redux team, Redux Toolkit was created to address three major concerns:.Any state aware component can access a slice directly and be reused across slices.Each slice is completely independent, however it can share capabilities as needed.It utilises all features of Redux Toolkit to provide reusable slices, actions, and reducers.This pattern can become very powerful for the following reasons: The index.js looks like this, All it's doing is wrapping everything in the Redux `Provider`: import from './store/actions' To take a look at things I've spun up an example application, with two search interfaces - a 'global' search and an 'image' search. When you view things through Redux Dev tools, this is what it looks like: Demonstration

Reduxjs toolkit series#

Each slice has its own name, initial state, reducers and actions.Įach application has it's own container which implements a Context provider called SliceProvider, which imports the slice and allows that to be accessed across the application.Īll child components can then be shared and access the state slice via a series of custom hooks that implement useContext. Then a custom useContext hook allows each reusable component to access store data and actions for that slice, without needing to be aware of which slice they are part of.Ī single global store is broken up into slices using the Redux Toolkit createSlice function. The updated architecture uses a React Context Provider to pass the applications 'slice' down via Context. Instead of doing this we came up with something new. The App wrapper would need to implement the hooks and actions itself, and then pass them down via Context or props so child components could access the correct data and actions in the store. So with a shared store, this architecture was at risk of becoming very complex. In our initial prototype it implemented it's own store and Redux's Provider component so the child components could implement Redux hooks directly.

It acts as a container and wraps the layout and components. Our architecture has a top level App component which is unique for each search application. A useSelector hook allows it to retrieve the current page, and a useDispatch hook allows it to call an action which updates the current page. It needs to keep track of which page a user is currently on, as well as update the current page. The initial build featured a suite of reusable components that each implement useDispatch and useSelector to act on their independent state management. Redux's excellent dev tools stopped functioning as intended, and the dev tools being a big driving point behind using Redux in the first place - meant we had to rethink our implementation. However, it quickly became apparent that Redux had not been designed to work this way. The choice of using separate stores allowed us to easily reuse React components that implemented Redux's useSelector hook to retrieve data from the store.

In Redux there can only be one store, and we put this to the test with an initial prototype that threw caution to the wind and used a separate store for each application. Whilst developing a recent project which utilises an Elasticsearch backend to provide a number of independent search interfaces, a need came up to have very similar state management for each application. This article assumes an understanding of (on the React side) Context, hooks, components, (and on the Redux side) actions & reducers, Redux hooks, and at least a little dabble in Redux Toolkit.