http request

acdacd2

hello,

I need a module to show value from a http request url from an ipx (www.gce-electronics.com) device.

any expérience?

thx,

acdacd2

In php I’m using this code

$xml = simplexml_load_file('http://ip:8889/status.xml');
$result = array();
foreach($xml->children() as $child){
$result[$child->getName()] = trim($child);
}

Eunanibus

Sorry, I wanted to reply to this sooner but I had some issues setting up!

What kind of information are you trying to display?

acdacd2

@Eunanibus Based on a xml file containing data from temperature captors, via the code above in php I visualise some data in a html table.

I need convert the php code to js code, i think

Eunanibus

Sure. So I’d probably go about it with this approach and work from there:

Try starting with the HelloWorld module and work from there. I’d start with putting this in the GetDom() function and return the contents of whatever you want displayed in the wrapper by appending it.

var wrapper = document.createElement("div");
var xmlhttp = new XMLHttpRequest();
var url = "http://ip:8889/status.xml";

xmlhttp.onreadystatechange = function() {
    if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
        var results = JSON.parse(xmlhttp.responseText);
        wrapper.innerHTML = parseResults(results);
    }
};
xmlhttp.open("GET", url, true);
xmlhttp.send();
return wrapper;

function parseResults(results) {
   var nodes = results.childNodes;.
   var resultsContainer = document.createElement("div");
    var out = "";
    var i;
    for(i = 0; i < results.length; i++) {
        var resultWrapper = document.createElement("div");
        resultWrapper.innerHTML = x[i].nodeName + ": " + x[i].childNodes[0].nodeValue + "<br>";
      resultsContainer.appendChild(resultWrapper);
    }
    return resultsContainer;
}

I’m a bit of a beginner too, but I think that might give you something to start with?

acdacd2

wow super,

I’m trying to run the code but “ReferenceError: document is not defined”

Eunanibus

I’m replying Mobile at the moment so I can’t give you a comprehensive answer (sorry) - does it say which line the error occurs?

Ensure that the parseData function is not within the GetDom() method, but isolated on its own. Go through and ensure that the document.createElement(“div”) function is referencing a document.

Sorry, I mocked up that code in about 10 minutes and I’m not an expert so there may be issues.

acdacd2

ok no problem, I will try to check and share of course

acdacd2

I think I’m not sure where exactly to put the code

Eunanibus

Ok. I took a look at this last night and I’m getting somewhere so let me get back to you on this. I’m just trying to create the module for you.

acdacd2

ok, any thanks

Eunanibus

Having good success. Can I get an example of the XML you’re trying to display?

Eunanibus

Well, I’ve spent the last couple of evenings trying to build something for you. You can download it here.

Give it a try and let me know how it does for you.

acdacd2

I will test it today.
Simple of the xml file

<response>
<led0>0</led0>
<led1>0</led1>
<led2>0</led2>
<led3>0</led3>
<led4>1</led4>
<led5>0</led5>
<led6>0</led6>
<led7>0</led7>
<led8>0</led8>
<led9>0</led9>
<led10>0</led10>
<led11>0</led11>
<led12>0</led12>
<led13>0</led13>
<led14>0</led14>
<led15>0</led15>
<led16>0</led16>
<led17>0</led17>
<led18>0</led18>
<led19>0</led19>
<led20>0</led20>
<led21>0</led21>
<led22>0</led22>
<led23>0</led23>
<led24>0</led24>
<led25>0</led25>
<led26>0</led26>
<led27>0</led27>
<led28>0</led28>
<led29>0</led29>
<led30>0</led30>
<led31>0</led31>
<btn0>up</btn0>
<btn1>up</btn1>
<btn2>up</btn2>
<btn3>up</btn3>
<btn4>up</btn4>
<btn5>up</btn5>
<btn6>up</btn6>
<btn7>up</btn7>
<btn8>up</btn8>
<btn9>up</btn9>
<btn10>up</btn10>
<btn11>up</btn11>
<btn12>up</btn12>
<btn13>up</btn13>
<btn14>up</btn14>
<btn15>up</btn15>
<btn16>up</btn16>
<btn17>up</btn17>
<btn18>up</btn18>
<btn19>up</btn19>
<btn20>up</btn20>
<btn21>up</btn21>
<btn22>up</btn22>
<btn23>up</btn23>
<btn24>up</btn24>
<btn25>up</btn25>
<btn26>up</btn26>
<btn27>up</btn27>
<btn28>up</btn28>
<btn29>up</btn29>
<btn30>up</btn30>
<btn31>up</btn31>
<day>24/06/2016</day>
<time0>08:55:17</time0>
<analog0>22</analog0>
<analog1>746</analog1>
<analog2>749</analog2>
<analog3>215</analog3>
<analog4>0</analog4>
<analog5>0</analog5>
<analog6>0</analog6>
<analog7>0</analog7>
<analog8>0</analog8>
<analog9>0</analog9>
<analog10>0</analog10>
<analog11>0</analog11>
<analog12>0</analog12>
<analog13>0</analog13>
<analog14>0</analog14>
<analog15>0</analog15>
<count0>22</count0>
<count1>0</count1>
<count2>0</count2>
<count3>0</count3>
<count4>0</count4>
<count5>0</count5>
<count6>0</count6>
<count7>0</count7>
<tinfo>---</tinfo>
<version>3.05.38_vsr</version>
</response>

Eunanibus

Cool. It should work fine! Hurry up and try it, I made it for you :laughing:

More information about it is here - I posted it for everyone to download.

acdacd2

some errors with nom install

pi@raspberrypi:~/MagicMirror/modules/default/MMM-HTTPRequestDisplay $ npm install
npm WARN enoent ENOENT: no such file or directory, open ‘/home/pi/MagicMirror/modules/package.json’
npm WARN enoent ENOENT: no such file or directory, open ‘/home/pi/MagicMirror/modules/node_modules/node_helper/package.json’
npm WARN modules No description
npm WARN modules No repository field.
npm WARN modules No README data
npm WARN modules No license field.

KirAsh4

You shouldn’t need to run 'npm install' inside the module folder unless the author specifically told you to do that.

acdacd2

I did that,

Now it’s solved, I copied the .json in the right folder

Eunanibus

Awesome. @KirAsh4 is correct - The README has all the instructions so be sure to take a look.

Please let me know how it works cause you’ll be the first person to use it

KirAsh4

As a further explanation, 'npm install' is only required if the module you are installing requires other node modules to also be installed. When you first install MagicMirror you have to run 'npm install' to install all the dependencies for it to work, however generally, modules don’t need that. The exception is if someone writes a module that requires another node module that isn’t already installed. So there was no need to run that, nor to copy any '.json' package files anywhere.