如何将异步输出提供给表达渲染器？

Question

我请求获取一个示例 XML 文件并对其进行解析，现在我想将它传递给 Express 渲染器以在页面上动态显示该值。我的渲染器路由器：

app.get('/dynamic_view', function(req, res){
    res.render('dynamic', {
        name: //pass my output here
    });
 });

我得到这样的异步输出：

const parseString = require('xml2js').parseString;
const axios = require('axios');

let url = 'https://www.w3schools.com/xml/simple.xml';

    axios.get(url)
      .then(response => {
        parseString(response.data, function (err, result) {
          console.log(result.breakfast_menu.food[0].name); // returns 'Belgian Waffles'
        });        
      })

如何将我的异步变量输出（应该是“比利时华夫饼”）传递给 res.renderer 的 name 属性？

Answer 1

const parseString = require('xml2js').parseString;
const axios = require('axios');

let url = 'https://www.w3schools.com/xml/simple.xml';

app.get('/dynamic_view', function(req, res, next){
    axios.get(url)
      .then(response => {
        parseString(response.data, function (err, result) {
          if (err) return next(err)
          res.render('dynamic', {
            name: result.breakfast_menu.food[0].name
          });
        });        
      })
 });