Learning Redux

Implementing the reducer

Now we are going to implement the error reducer, which is going to handle error-related actions:

1. Create a new src/reducers/error.js file. We will make use of our standardized action types again and handle all action types that end with _FAILURE:

export default function errorReducer (state = {}, action) {  if (action.type.endsWith('_FAILURE')) {

2. Then, we simply return the whole error object:

    return action.error  }

3. Finally, we return the current state if no error has happened:

  return state}

4. Do not forget to import and include the reducer in the root reducer. Edit src/reducers/index.js:

// ...other imports...import errorReducer from './error'const appReducer = combineReducers({  // ...other reducers...  error: ...