React Redux Toolkit Tips

Introduction

Taken from YouTube https://www.youtube.com/watch?v=NqzdVN2tyvQ

Tip 1 Probably should know this

Instead of using

const posts = useSelector((state) => state.posts);

We can use

// In the component
const posts = useSelector(selectAllPosts)
// In the Slice
export const selectAllPosts = (state) => state.posts;

Tip 1 Prepare Callback

We started with this where we pass an object in the action

const postsSlice = createSlice({
    name: 'posts',
    initialstate,
    reducers: {
       postAdded(state, action) {
           state.push(action.payload)
       }
    }
})

They like to provide an API parameter to minimize the work and make a prepare function

const postsSlice = createSlice({
    name: 'posts',
    initialstate,
    reducers: {
       postAdded: {  
           reducer(state, action) {
           state.push(action.payload)
       },
       prepare(title, content) {
           return {
              payload: {
                id: nanoid(),
                title,
                content 
              } 
           }
       }
    }
  }
})