React组件无法通过API映射和呈现数组中的数据

Question

I'm using react, redux, axios, and redux-thunk to handle async.

I have a feeling that the solution is going to be obvious but for some reason, I am unable to map over an array of users (retrieved from a local express/node api) and render each user out. The user's info will be logged into the console but the...

<p>NO USERS FOUND</p> 

...component is rendered onto the screen instead.

Here is my repo: https://github.com/tedjames/reduxTest

And here is what my component looks like:

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

class App extends Component {
  componentWillMount() {
    console.log(this.props);
    this.props.getUsers();
  }

  render() {
    if (this.props.users[1]) {
      this.props.users.map((user) => {
        console.log("USER FOUND!");
        console.log(user.email);
        return <p key={user.id}>USER FOUND: {user.email}</p>
      });
    } else {
      return <p>NO USERS FOUND</p>
    }
  }
}

const mapStateToProps = state => {
  return {
    users: state.admin.users
  };
};

export default connect(mapStateToProps, { getUsers })(App);

And this is my action that uses axios to fetch the users:

import axios from 'axios'
import { GET_USERS } from './types'

export const getUsers = () => {
  return (dispatch) => {
    axios.get('http://localhost:3090/users')
      .then(res => {
        console.log("<-- // DATA RECEIVED FROM SERVER // --> ");
        console.log(res);
        dispatch({ type: GET_USERS, payload: res.data })
      })
      .catch(({ response }) => {
        console.log("// ERROR RECEIVED FROM SERVER //");
        console.log(response);
      });
  }
};

This is what my console outputs

Answer 1

You have to return the array inside render (and wrap it in some tag):

return (
  <div>{ this.props.users.map((user) => {
      console.log("USER FOUND!");
      console.log(user.email);
      return <p key={user.id}>USER FOUND: {user.email}</p> }
  </div> 
 );