Ambil data kosong di componentwillMount di redux asli reaksi

Halo, Saya mencoba mempelajari reaksi asli dari kursus reaksi asli Stephen Grider. Saya terjebak saat memuat data dari layanan web saya dan mencantumkannya dengan menggunakan redux dan lodash. Saya berhasil mendapatkan data dan melihatnya di render (konsol. log) , namun alat peraga saya selalu nol di komponenDidUpdate atau komponenWillMount . Bantuan apa pun dihargai, terima kasih. Peredamnya seperti ini;

    import { TEST_FETCH, TEST_LOAD } from "../actions/types";

const INITIAL_STATE = { dataSource: [] };

export default (state = INITIAL_STATE, action) => {
  switch (action.type) {
    case TEST_FETCH:
      return { ...state, loading: false, dataSource: action.payload.data };
    case TEST_LOAD:
      return { ...state, loading: true, error: "" };
    default:
      return state;
  }
};

dan tindakan adalah;

    import { TEST_LOAD, TEST_FETCH } from "./types";
export  const  getdata = ( ) => {
  return  dispatch => {
    dispatch({ type: TEST_LOAD });
     fetch("http://myserver/getdata", {
      method: "GET",
      headers: {
        Accept: "application/json",
        "Content-Type": "application/json"
      }
    })
      .then(response => {
        return response.json();
      })
      .then(responseData => {
        return responseData;
      })

      .then(data => {
        // return data;
        dispatch({ type: TEST_FETCH, payload: data });
      });
  };
};

dan halaman adalah ;

       import _ from 'lodash';
    import React, { Component } from "react";
    import { View, Text, ListView } from "react-native";
    import { connect } from "react-redux";
    import { getdata } from "../actions";

    class testList extends Component {
      componentWillMount() {
       this.props.getdata();
      }
      componentDidMount() {
       console.log(this.props.myarray ); // myarray is empty
        this.createDataSource(this.props.myarray);
      }

      componentDidUpdate() {
       console.log(this.props.myarray ); // I tried this but still myarray is empty
        this.createDataSource(this.props.myarray);
      }
      createDataSource({ dtsource }) {
// sure dtsource is null too
         const ds = new ListView.DataSource({
          rowHasChanged: (r1, r2) => r1 !== r2});
         this.dataSource = ds.cloneWithRows(dtsource);
      }
      render() {
    console.log(this.props.myarray); // if I write here,I can see my json's output
        return <View>
            <Text>Employee List</Text>
            <ListView dataSource={this.props.myarray} renderRow={rowData => <Text
                >
                  {rowData}
                </Text>} />
          </View>;
      }
    }

    const mapStateToProps = state => {
      const myarray= _.map(state.testForm.dataSource, function(v) {
        return { ...v };
      });
          return { myarray};
    };
    export default connect(mapStateToProps , { getdata })(testList);