Help needed simple API based module

[washichi]

@yawns thank you!
the module shows now this.message and refreshes it with the schedule.
however I am still doing something wrong in my request:

	updateISS: function() {
		var url = this.config.apiBase;
		var self = this;
		var opennotifyRequest = new XMLHttpRequest();
		opennotifyRequest.open("GET", url, true);
		this.message = "in updateISS";
		opennotifyRequest.onreadystatechange = function() {
		self.message = "request status: "+ to.String(this.status); // not displayed
		if (this.readyState === 4) {
			if (this.status === 200) {
				var resp = JSON.parse(this.response);
				self.latitude = resp.iss_position.latitude;
				self.longitude = resp.iss_position.longitude;
				self.timestamp = resp.timestamp;
				self.message = resp.message;
				self.message = "dit gebeurt niet";
			}
		}
		};
	opennotifyRequest.send();
	self.updateDom();
	}

I can’t set message in that function, for example line 86. I use self/this wrong, or the function isn’t executing. but the code continous because when I set the message before or after that function it gets displayed.

[yawns]

@washichi
hm. Did you try to output latitude and longitude as well in getDom to see if this is working?

[washichi]

@yawns No I didn’t, but that should be exactly the same thing.
If I hardcode the (any) variable in “issRequest.onreadystatechange = function() {”
then it just doesn’t display, so it looks like it isn’t going in that function.
but if I hardcode the (any) variable after that function It displays.

So I can display the variable (message), but the variable doesn’t get filled with the request.

[yawns]

Simple way to test if it entering the function:

Log.error("function entered");

Press F12 in browser, check for console output and refresh the website. If the function is entered you will see “function entered” in the console.

[washichi]

thank you! It’s now working :)
I thought that my scheduleupdate was working but it didn’t (only 2 times )
with the Log function I could find the problem easy .

[yawns]

great. Now tidy up your code ;) and present your module in modules showcase

[ooom416354]

@washichi @yawns this is great work. I am wondering, would this completed code be kind of a base for making other API calls which return data in JSON format?

[washichi]

@ooom416354 Yes, but other modules are also that.
I used the default module “weatherforecast” it is an simple api based module that gets the data and displays it in a table.

I’m now trying to add a map, and then display the ISS current position on that, but implementing this in a module is a lot harder then normal javascript :p.

[yawns]

@ooom416354
Yes, kind of. At least with JSON calls without additional headers. The you need to use request and a node_helper

[ooom416354]

@washichi Yea, I am still not even sure how to translate the returned JSON to an actual visual table on the mirror. Not very good at this lol