Javascript 错误：网络错误，另一个错误是；“未定义类型”；

我正在开发天气api，以制作天气显示应用程序。。 但是我想运行这个项目，它在action creator中给出了一个错误，其中显示类型未定义

操作/index.js

import axios from 'axios';

const API_KEY = '6614d40c20e44e4e437b2b20c951ecc';
const ROOT_URL = `https://samples.openweathermap.org/data/2.5/forecast?appid=${API_KEY}`;

export const FETCH_WEATHER = 'FETCH_WEATHER';

export function fetchWeather(city){
  const url = `${ROOT_URL}&q=${city},us`;
  const request = axios.get(url);

  return(
    type: FETCH_WEATHER,
    payload: request
  );
}

import React, { Component } from 'react';
import { connect } from 'react-redux';
import { bindActionCreators } from 'redux';
import { fetchWeather } from '../actions/index';

class SearchBar extends Component{
  constructor(props){
    super(props);

    this.state = { term: '' };

    this.onInputChange = this.onInputChange.bind(this);
    this.onFormSubmit = this.onFormSubmit.bind(this);
  }

  onInputChange(event){
  //  console.log(event.target.value);
    this.setState({ term:event.target.value });
  }

  onFormSubmit(event){
    event.preventDefault();

    // we need to go and fetch weather data
    this.props.fetchWeather(this.state.term);
    this.setState({ term: '' });
  }

  render(){
    return(
      <form onSubmit={this.onFormSubmit} className = "input-group">
        <input
          placeholder = "get a five-day forecast inypur city"
          className = "form-control"
          value = {this.state.term}
          onChange = {this.onInputChange}/>
        <span className = "input-group-btn">
            <button type="submit" className="btn btn-secondary">submit</button>
        </span>
      </form>
    )
  }
}


function mapDispatchToProps(dispatch){
  return bindActionCreators({ fetchWeather }, dispatch)
}

export default connect(null, mapDispatchToProps)(SearchBar);

我还制作了一个搜索栏，可以像用户一样搜索这个城市

容器/search.js

import axios from 'axios';

const API_KEY = '6614d40c20e44e4e437b2b20c951ecc';
const ROOT_URL = `https://samples.openweathermap.org/data/2.5/forecast?appid=${API_KEY}`;

export const FETCH_WEATHER = 'FETCH_WEATHER';

export function fetchWeather(city){
  const url = `${ROOT_URL}&q=${city},us`;
  const request = axios.get(url);

  return(
    type: FETCH_WEATHER,
    payload: request
  );
}

import React, { Component } from 'react';
import { connect } from 'react-redux';
import { bindActionCreators } from 'redux';
import { fetchWeather } from '../actions/index';

class SearchBar extends Component{
  constructor(props){
    super(props);

    this.state = { term: '' };

    this.onInputChange = this.onInputChange.bind(this);
    this.onFormSubmit = this.onFormSubmit.bind(this);
  }

  onInputChange(event){
  //  console.log(event.target.value);
    this.setState({ term:event.target.value });
  }

  onFormSubmit(event){
    event.preventDefault();

    // we need to go and fetch weather data
    this.props.fetchWeather(this.state.term);
    this.setState({ term: '' });
  }

  render(){
    return(
      <form onSubmit={this.onFormSubmit} className = "input-group">
        <input
          placeholder = "get a five-day forecast inypur city"
          className = "form-control"
          value = {this.state.term}
          onChange = {this.onInputChange}/>
        <span className = "input-group-btn">
            <button type="submit" className="btn btn-secondary">submit</button>
        </span>
      </form>
    )
  }
}


function mapDispatchToProps(dispatch){
  return bindActionCreators({ fetchWeather }, dispatch)
}

export default connect(null, mapDispatchToProps)(SearchBar);

import React，{Component}来自'React'；
从'react redux'导入{connect}；
从“redux”导入{bindActionCreators}；
从“../actions/index”导入{fetchWeather}；
类搜索栏扩展组件{
建造师（道具）{
超级（道具）；
this.state={term:'}；
this.onInputChange=this.onInputChange.bind（this）；
this.onFormSubmit=this.onFormSubmit.bind（this）；
}
onInputChange（事件）{
//日志（event.target.value）；
this.setState（{term:event.target.value}）；
}
onFormSubmit（事件）{
event.preventDefault（）；
//我们需要去获取天气数据
this.props.fetchWeather（this.state.term）；
this.setState（{term:'}）；
}
render（）{
返回(
提交
)
}
}
功能图DispatchToprops（调度）{
返回bindActionCreators（{fetchWeather}，dispatch）
}
导出默认连接（null，mapDispatchToProps）（搜索栏）；

每当我尝试搜索城市时，它都会显示一个错误，即类型未定义，如下所示

这不是你想象的那样

而是返回一个对象：

  return({
    type: FETCH_WEATHER,
    payload: request
   });

---

@Panchal先生你能在修复后立即获取任何数据并设置你的状态吗？