FAQ: Refactoring with Redux Toolkit - Refactoring with createSlice()

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This community-built FAQ covers the “Refactoring with createSlice()” exercise from the lesson “Refactoring with Redux Toolkit”.

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This exercise can be found in the following Codecademy content:

Learn Redux

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On step 4

Call createSlice() with options as the only argument and assign the result to favoriteRecipes

Is that a typo? As the variable created in part 1 of step 4 is called favoriteRecipesSlice?

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I think so, that’s why I came here, to check what’s going on.

4

createSlice(), creates action types. But what about the payload? How you define that? Please help, greetings

5 
/* todosSlice.js */
//Configuration object for createSlice()
const options = {
 name: 'todos', //Name of slice
 initialState: [], //Initial state of slice
 reducers: {
   //Reducer for "addTodo" action
   addTodo: (state, action) => {
     return [
       ...state,
       {
         id: action.payload.id,
         text: action.payload.text,
         completed: false
       }
     ]
   },
   //Reducer for "toggleTodo" action
   toggleTodo: (state, action) => {
     return state.map(todo =>
       (todo.id === action.payload.id) ? { ...todo, completed: !todo.completed } : todo
     )
   }
 }
}

const todosSlice = createSlice(options);

In this beginning example, there are 2 reducers in one slice. and no switch statements. I’m trying to wrap my head around this, how does the action object call on one of the reducers and not the other?