리덕스 툴킷 문서-createReducer

createReducer()

리듀서를 작성하다보면 switch 문으로 작성하게 되는데 createRedicer()는 switch문 보다 더 단순한 구조로 리듀서를 작성하도록 도와주는 함수다.

// 액션 타입 불러오기 or createAction()로 액션생성
const CREATE = createAction('user/CREATE')
const UPDATE = createAction('user/UPDATE')
const DELETE = createAction('user/DELETE')
const DELETE_ALL = createAction('user/DELETE_ALL')

const reducer = createReducer(initState, {
  [CREAT]: (state, action) => state.users.push(action.payload),
  [UPDATE]: (state, action) =>
    (users.users = users.users.filter(
      (user) =>
        (user.id === action.payload.id && user.name = action.payload.name)
    )),
  [DELETE]: (state, action) =>
    (users.users = users.users.filter((user) => user.id !== action.payload)),
  [DELETE_ALL]: (state) => (state.users = []),
});