Thanks for the help so far!! Now I have my data I can play around with it.

getMTVM: function(url) {
               let self=this
		request(url, function(err, res, body) {
		        // if no error and server was happy
			if(err == null && res.statusCode ==200){
			   console.log(body);
			   xml2js.parseString(body,function (err,result) {
			       let json_data = result // not needed but may make more clear
			       console.log(JSON.stringify(json_data))			   
			   });		   
			}
		});
	},

Whoops! There was an uncaught exception...
TypeError: Cannot read property '0' of undefined
    at /home/pi/MagicMirror/modules/MMM-MyTVMovies/node_helper.js:28:47
    at Parser.<anonymous> (/home/pi/MagicMirror/modules/MMM-MyTVMovies/node_modules/xml2js/lib/parser.js:306:18)
    at Parser.emit (events.js:182:13)
    at SAXParser.onclosetag (/home/pi/MagicMirror/modules/MMM-MyTVMovies/node_modules/xml2js/lib/parser.js:264:26)
    at emit (/home/pi/MagicMirror/modules/MMM-MyTVMovies/node_modules/sax/lib/sax.js:624:35)
    at emitNode (/home/pi/MagicMirror/modules/MMM-MyTVMovies/node_modules/sax/lib/sax.js:629:5)
    at closeTag (/home/pi/MagicMirror/modules/MMM-MyTVMovies/node_modules/sax/lib/sax.js:889:7)
    at SAXParser.write (/home/pi/MagicMirror/modules/MMM-MyTVMovies/node_modules/sax/lib/sax.js:1436:13)
    at Parser.exports.Parser.Parser.parseString (/home/pi/MagicMirror/modules/MMM-MyTVMovies/node_modules/xml2js/lib/parser.js:325:31)
    at Parser.parseString (/home/pi/MagicMirror/modules/MMM-MyTVMovies/node_modules/xml2js/lib/parser.js:5:59)

Has this something to do with the json_data.film[0].titel ??
Or is it something else?

When I remove .film[0].titel I got:

Text is [object Object]
200[object Object]

in your module folder do

npm install xml2js

then in your code

const xml2js = require('xml2js');

then

getMTVM: function(url) {
               let self=this
		request(url, function(err, res, body) {
		        // if no error and server was happy
			if(err == null && res.statusCode ==200){
			   console.log(body);
			   xml2js.parseString(body,function (err,result) {
			       let json_data = result // not needed but may make more clear
			       console.log("Text is " + json_data.film[0].titel)			   
			   });		   
			}
		});
	},

Whoops! There was an uncaught exception...
TypeError: xml.hasChildNodes is not a function

Any idea?

	getMTVM: function(url) {
               let self=this
		request(url, function(err, res, body) {
		        // if no error and server was happy
			if(err == null && res.statusCode ==200){
			   console.log(body);
			   var json_data = self.xmlToJson(body)
			   console.log("Text is " + json_data.film[0].titel)
			}
		});
	},

const NodeHelper = require('node_helper');
const request = require('request');

module.exports = NodeHelper.create({

    start: function() {
        console.log("Starting node_helper for: " + this.name);
    },
	
	// Changes XML to JSON
	xmlToJson: function(xml) {
		
		// Create the return object
		var obj = {};

		if (xml.nodeType == 1) { // element
			// do attributes
			if (xml.attributes.length > 0) {
			obj["@attributes"] = {};
				for (var j = 0; j < xml.attributes.length; j++) {
					var attribute = xml.attributes.item(j);
					obj["@attributes"][attribute.nodeName] = attribute.nodeValue;
				}
			}
		} else if (xml.nodeType == 3) { // text
			obj = xml.nodeValue;
		}

		// do children
		if (xml.hasChildNodes()) {
			for(var i = 0; i < xml.childNodes.length; i++) {
				var item = xml.childNodes.item(i);
				var nodeName = item.nodeName;
				if (typeof(obj[nodeName]) == "undefined") {
					obj[nodeName] = xmlToJson(item);
				} else {
					if (typeof(obj[nodeName].push) == "undefined") {
						var old = obj[nodeName];
						obj[nodeName] = [];
						obj[nodeName].push(old);
					}
					obj[nodeName].push(xmlToJson(item));
				}
			}
		}
		return obj;
	},
		
	
	getMTVM: function(url) {
		request(url, function(err, res, body) {
		// if no error and server was happy
			if(err == null && res.statusCode ==200){
			console.log(body);
			var json_data = this.xmlToJson(body)
			console.log("Text is " + json_data.film[0].titel)
			}
		});
	},


    socketNotificationReceived: function(notification, payload) {
        if (notification === 'GET_MTVM') {
            this.getMTVM(payload);
        }
    }
});

In the dev console I get an error:

Whoops! There was an uncaught exception...
TypeError: this.xmlToJson is not a function

json_data.film.length

using the developers window you can put a code stop on the line after the xml2json
and then u can explore the conversion…

you can also use console.log(JSON.stringify(some_object)) and it will dump the structure in json format

image url)

json_data.SD[0].SPEED@attributes.TEXT will be:

json.data.film[0].titel    --> 'Bellicher: Cel'

Correct?

request(url, function(err, res, body) {
    // if no error and server was happy
    if(err == null && res.statusCode ==200){
    console.log(body);
    var json_data=this.xmlToJson(body)
    console.log("Speed[0] text is "+json_data.SD[0].SPEED.@attributes.TEXT)
}
});

when the server responds, the function is called and passed the data, body)
and then u would convert it from xml to json . using the last code

var json_data=this.xmlToJson(body)

then the json is accessed with the normal structure notation
(using the sample with the code in the last link)

json_data.SD[0].SPEED.@attributes.TEXT will be ‘1421’

SD is an array (multiple of same xml tags)

a little ugly in the data layour, could get rid of the @attributes thing with a small code change

Indeed the last one with no extra libs looks promising. I tried to simply add this in the node_helper.js but getting stuck at how to use it.
I’ve looked into all the MMM Modules but cannot seem to find an example.

https://www.npmjs.com/package/xml2js

google search
‘nodejs xmltojson’

here is one with a just code, no extra libs

https://davidwalsh.name/convert-xml-json

Maybe I read over it, but I cannot figure out where you do this.

Now to update github. Someday I should write some documentation too.

Sam is a REALLY smart guy so he gives you the smart guy answer

nah, Sam is the LAZY guy… change as LITTLE as possible. especially for folks just starting out

It will work either way … so now you def have an answer that works :)

-updated to fix grammar

scheduleUpdate: function() {
       setInterval(() => {
           this.getMenuData();
       }, this.config.updateInterval); 
   },
    getMenuData: function() {
       this.sendSocketNotification('GET-MENU-DATA');
   }

At the top of the main js you set the interval:

updateInterval: 15 * 60 * 1000,

Then in the start section you call it:

// Define start sequence.
   start: function() {
       Log.info("Starting module: " + this.name); 
       this.scheduleUpdate();
   },

Either the way Sam showed you or the above will work :)

getMenuData: function(_this) {
// Make the initial request to the helper then set up the timer to perform the updates
_this.sendSocketNotification(‘GET-MENU-DATA’, _this.urls);
setTimeout(_this.getMenuData(), _this.config.interval, _this);
},

do this

 getMenuData: function(_this) {
    // Make the initial request to the helper then set up the timer to perform the updates
    _this.sendSocketNotification('GET-MENU-DATA', _this.urls);
    setTimeout(function() {_this.getMenuData(_this)}, _this.config.interval);
  },

this creates a little inline function which CAN pass parms on to the next routine

start:  function() {
    Log.log('Starting module: ' + this.name);

    // Set up the local values
    var today = moment();
    this.loaded = false;
    this.urls = [];
    this.results = [];

    // Uses now are today if before noon and tomorrow as today if after noon
    if (today.hour() >= 12) {
      var todayFormatted = today.add(1, 'day').format('MM-DD-YYYY');
    }
    else {
      var todayFormatted = today.format('MM-DD-YYYY');
    }

    // Currently set to only pull one day's data so endDayFormatted = todayFormatted
    //var endDay = today.add(config.showDays, 'days');
    //var endDayFormatted = endDay.format('MM-DD-YYYY');
    var endDayFormatted = todayFormatted;

    // Construct the url array for the schools
    for (var i in this.config.schools) {
			this.urls.push({school: this.config.schools[i], url: 'https://api.mealviewer.com/api/v4/school/' + this.config.schools[i] + '/' + todayFormatted + '/' + endDayFormatted + '/'});
    }

    // Trigger the first request
    this.getMenuData(this);
  },

  getMenuData: function(_this) {
    // Make the initial request to the helper then set up the timer to perform the updates
    _this.sendSocketNotification('GET-MENU-DATA', _this.urls);
    setTimeout(_this.getMenuData(), _this.config.interval, _this);
  },

My changes can be found here.

https://github.com/gonzonia/MMM-MealViewer/tree/patch-1
added shortName to config to replace text based on config option instead of hardcoded
changed className to menuWrapper to allow for style control without interfering with other modules
added config option for showing single or multiple meals based on name, default is All

Still need to add some documentation but it might be a couple of weeks.