MMM-Stock Cannot read property 'toLowerCase'

[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";
		}