MMM-Stock Cannot read property 'toLowerCase'

[brendan_c23]

Stock module used to run just fine, now I am given this error when pulling up ‘npm start dev’ can anyone offer any guidance on how to fix this?

[sdetweil]

@brendan_c23 usually this happens when a module retrieves data and EXPECTS success, but never really checks, or the data changes format.

this specific error is related to a string (“abcdefgh”) and wanting to convert all the chars to lowercase before comapring… BUT the string didn’t get created…

in json data its like this
if(json_data.key.toLowerCase() ==‘test’)
but the item changed name to Key, so its undefined.toLowercase()…

or key is not a string anymore,
but an object {}

net, the code has to change

[brendan_c23]

@sdetweil Could you help guide me on how to fix the code? Would you like me to post the .js file?

[sdetweil]

@brendan_c23 which module is that

this one works fine (with the example stocks)

https://github.com/hakanmhmd/MMM-Stock

[sdetweil]

@brendan_c23 ok, I see the error on refresh…

change line 90 from

	if(this.config.currency.toLowerCase() != "usd"){

to

	if(that.config.currency.toLowerCase() != "usd"){

[brendan_c23]

@sdetweil Hey I tried that, now it says Cannot read property ‘toLowerCase’ of undefined at MMM-stock.js:90
Any other suggestions?

u are only changing the word this to the word that on that one line

[brendan_c23]

@brendan_c23 Uncaught TypeError: Cannot read property ‘toLowerCase’ of undefined

[sdetweil]

@brendan_c23 you are only changing one word
‘this’ to the word ‘that’ on one line

[brendan_c23]

@sdetweil Yes I made that change, but the error was still coming up for me

[sdetweil]

@brendan_c23 show me those 10 lines

[brendan_c23]

@sdetweil //if another currency is required - usd is default
var differentCurrency = false;
if(that.config.currency.toLowerCase() != “usd”){
differentCurrency = true;
var requiredCurrency = this.config.currency.toUpperCase();
}

	for (var key in data) {
		if (!data.hasOwnProperty(key)) {continue;}
		var symbol = key;
		var obj = data[key];
		var current = obj[0];
		var prev = obj[1];
		var price = current["4. close"];
		var change = prev["4. close"] - current["4. close"];

		var html = "";
		var priceClass = "greentext", priceIcon="up_green";
		if(change < 0) {
			priceClass = "redtext";
			priceIcon="down_red";
		}

[sdetweil]

@brendan_c23 no, these, around line 90

	scheduleUpdate: function(delay) {
		var loadTime = this.config.updateInterval;
		if (typeof delay !== "undefined" && delay >= 0) {
			loadTime = delay;
		}

		var that = this;
		setInterval(function() {
			that.getStocks();
			if(that.config.currency.toLowerCase() != "usd"){ // line 90 changed
				that.getExchangeRate();
			}
		}, loadTime);
	},

[brendan_c23]

@sdetweil Ok, I changed the ‘this’ to ‘that’ some lines above! not on those lines, going to try running it after changing the line you just sent

[sdetweil]

@brendan_c23 just the ONE line, line 90…

[brendan_c23]

@sdetweil still waiting to see if it will display, theres a big delay, but no errors have popped up yet

scheduleUpdate: function(delay) {
var loadTime = this.config.updateInterval;
if (typeof delay !== “undefined” && delay >= 0) {
loadTime = delay;
}

	var that = this;
	setInterval(function() {
		that.getStocks();
		if(that.config.currency.toLowerCase() != "usd"){
			that.getExchangeRate();
		}
	}, loadTime);
},

[brendan_c23]

@sdetweil No errors have come up, but it also has not displayed, have been waiting for around 10 minutes

[sdetweil]

@brendan_c23 did u change the other lines back?

open the developers window ctrl-shift-i, console tab, ‘stock’ in the filter field (no quotes)

[brendan_c23]

@sdetweil They should be, but just in case Im missing something…

Module.register(“MMM-Stock”, {
result: {},
defaults: {
updateInterval: 60000,
fadeSpeed: 1000,
companies: [“GOOGL”, “YHOO”],
currency: “usd”,
baseURL: “https://www.alphavantage.co/”,
apikey: “IPWULBT54Y3LHJME”
},

getStyles: function() {
	return ["MMM-Stock.css"];
},

getTranslations: function() {
	return false;
},

start: function() {
	this.getStocks();
	if(this.config.currency.toLowerCase() != "usd"){
		this.getExchangeRate();
	}
	this.scheduleUpdate();
},

getDom: function() {
	var wrapper = document.createElement("div");
	wrapper.className = "quotes";
	var list = document.createElement("ul");

	var data = this.result;
	// the data is not ready
	if(Object.keys(data).length === 0 && data.constructor === Object){
		return wrapper;
	}

	//if another currency is required - usd is default
	var differentCurrency = false;
	if(this.config.currency.toLowerCase() != "usd"){
		differentCurrency = true;
		var requiredCurrency = this.config.currency.toUpperCase();
	}

	for (var key in data) {
		if (!data.hasOwnProperty(key)) {continue;}
		var symbol = key;
		var obj = data[key];
		var current = obj[0];
		var prev = obj[1];
		var price = current["4. close"];
		var change = prev["4. close"] - current["4. close"];

		var html = "";
		var priceClass = "greentext", priceIcon="up_green";
		if(change < 0) {
			priceClass = "redtext";
			priceIcon="down_red";
		}
		html = html + "<span class='" + priceClass + "'>";
		html = html + "<span class='quote'> (" + symbol + ")</span> ";
		html = html + parseFloat(price).toFixed(2) + " USD";
		html = html + "<span class='" + priceIcon + "'></span>" + parseFloat(Math.abs(change)).toFixed(2);

		var stock = document.createElement("span");
		stock.className = "stockTicker";
		stock.innerHTML = html;

		var listItem = document.createElement("li");
		listItem.innerHTML = html;
		list.appendChild(listItem);
	}

	wrapper.appendChild(list);
	return wrapper;
},

scheduleUpdate: function(delay) {
	var loadTime = this.config.updateInterval;
	if (typeof delay !== "undefined" && delay >= 0) {
		loadTime = delay;
	}

	var that = this;
	setInterval(function() {
		that.getStocks();
		if(that.config.currency.toLowerCase() != "usd"){
			that.getExchangeRate();
		}
	}, loadTime);
},

getStocks: function () {
	var allCompanies = this.config.companies;
	var urls = [];
	for(var company in allCompanies){
		var url = this.config.baseURL + "query?function=TIME_SERIES_DAILY&outputsize=compact&symbol=" + allCompanies[company] + "&apikey=" + this.config.apikey;
		urls.push(url);
	}
	this.sendSocketNotification("GET_STOCKS", urls);
},

getExchangeRate: function () {
	var url = this.config.baseURL + "?q=select%20*%20from%20yahoo.finance.xchange%20where%20pair%20in%20('USD" + this.config.currency + "')&format=json&diagnostics=true&env=store%3A%2F%2Fdatatables.org%2Falltableswithkeys&callback="
	this.sendSocketNotification("GET_EXCHANGE_RATE", url);
},
socketNotificationReceived: function(notification, payload) {
	if (notification === "STOCK_RESULT") {
		this.result = payload;
		this.updateDom(self.config.fadeSpeed);
	} else if(notification === "EXCHANGE_RATE"){
		this.rate = payload;
	}
}

});

[brendan_c23]

@sdetweil Load script: modules/MMM-Stock//MMM-Stock.js
module.js:517 Module registered: MMM-Stock
loader.js:148 Bootstrapping module: MMM-Stock
loader.js:153 Scripts loaded for: MMM-Stock
loader.js:195 Load stylesheet: modules/MMM-Stock/MMM-Stock.css
loader.js:155 Styles loaded for: MMM-Stock
loader.js:157 Translations loaded for: MMM-Stock

[sdetweil]

@brendan_c23 so, no errors

does the config entry have a position:

if not the content is thrown away