按照umi + dva 发现不触发reducers的问题

我的 login这样写死了user: 1， 但是user的状态还是不变，触发login后user永远是初始状态？？？

tasks 组件内获取到也是null, 无法通过put改变状态啊

求指点！

export default {
  namespace: 'app',
  state: {
    user: null,
    locationPathname: '',
    locationQuery: {},
  },

  subscriptions: {
    setupHistory ({ dispatch, history }) {
      history.listen((location) => 
        dispatch({
          type: 'updateState',
          payload: {
            locationPathname: location.pathname,
            locationQuery: location.query,
          },
        })
      )
    },
    setup ({ dispatch }) {
      dispatch({ type: 'doLogin', payload: {  } })
    },
  },

  effects: {
    * doLogin ({ payload }, { call, put, select }) {
      yield put({ type: 'login', payload: {user: 1}})
      let { user } = yield select(_ => _.app)
      // console.log(user) null
      yield put(routerRedux.push({
        pathname: '/tasks',
      }))
    },

    * loginOut ({ payload }, { call, put, select }) {
      yield put({ type: 'updateState', payload: {
        user: null,
      }})
      yield put(routerRedux.push({
        pathname: '/login',
      }))
    },
  },

  reducers: {
    updateState (state, { payload }) {
      return {
        ...state,
        ...payload,
      }
    },
    login (state, { payload }) {
      return {
        ...state,
        user: 1,
      }
    },
  },
}