What is wrong with my url?

[EllyJ]

The url scraped from a music player always produces a broken image icon (middle of pic).
If I input the url in manually and then run the module it will display the image (see comment at the top of the pic).
If I don’t put in a url I get an outline with no broken image icon.
I can output the url as a string on the screen (middle of pic and code)
I can check the url from the music players web interface (bottom of pic).

Could someone please tell me how to the url into image.src from data[‘albumart’]. This has been bugging me for 2 full days now.

        var data = this.volumioData;
        var item = document.createElement('div');
        var image = document.createElement('img');
        image.src = data['albumart']; //  If I replace this with the url it will display the image
        image.height = 450;
        image.width = 450;
        image.className = 'image';
        item.className = 'mmm-volumio-item';
        item.innerHTML = '<div>' + data['artist'] + ' • ' + data['album'] +
                         '</div>' + '<div>' + data['albumart'] + '</div>';//I put 'albumart' here to prove I had the url
        wrapper.appendChild(item);
        wrapper.appendChild(image);
        return wrapper;
    }
});

I am modifying MMM-Volumio to show the Album Covers what is playing. I can’t program in Java but have done a tiny bit in C++,Pascal,Visual Basic and Python. I am sorry if my code is really bad (all 4 lines of it that took me 2 days), it is working except for the url problem. I will also do a better layout when it is working.

[sdetweil]

@EllyJ what format is the this.volumioData? string, json, object?

[EllyJ]

@sdetweil it json I believe. I’m on a RaspberryPi and the file extension is .js.

[EllyJ]

@EllyJ sorry I don’t know about Volumio. At the bottom of the picture is the live data. I just found this but don’t understand what it is getting at.

If albumart value starts with http, then no further operation is needed and the resulting url will show an albumart
Otherwise, prepend the string formed by: http:// + IP ADDRESS of Volumio device. Example: http://192.168.1.22/albumart?

[sdetweil]

@EllyJ ok, you need to use
let data=JSON.parse(this.volumioData)
to get into object form, then your
data[‘albumart’] might work

on my phone

[EllyJ]

@sdetweil I think I have to add my IP address for the Volumio. When I was looking to see if Volumio is json I stumbled on this on their website. Can I += strings?

[sdetweil]

@EllyJ I’m not sure

[sdetweil]

@EllyJ this.volumioData should be the response from the server

[EllyJ]

@sdetweil it is. If you look at the url it gives to the album art it does not start with http://192.168… so I just need to add that I believe. I stumbled on that info by mistake thanks to you. I will try and get that working now.

[EllyJ]

Ok it works :grinning_face_with_smiling_eyes: The problem was I needed to add the Raspberry Pi’ address before the album art url. Thank you very much @sdetweil for asking me a question that led to that info.

As you can see it needs to be shifted about a little to look good.

        var data = this.volumioData;
        var item = document.createElement('div');
        var amendUrl = "";
        var image = document.createElement('img');
        if (data['service'] == "mpd") {
            amendUrl = this.config.volumioUrl + data['albumart'];} // if local playback use volumio url +  albumart url 
        else{
            amendUrl = data['albumart'];}                   // else if web radio just albumart url
        image.src = amendUrl;                               // set url to the image
        image.height = 600;
        image.className = 'image';
        item.className = 'mmm-volumio-item';
        item.innerHTML = '<div>' + data['artist'] + ' • ' + data['album'] +
                         '</div>' + '<div>' + data['album'] + '</div>';//I put 'albumart' here to prove I had the url
        wrapper.appendChild(item);                          // display artist, album and title info
        wrapper.appendChild(image);                         // display album artwork
        return wrapper;
    }
});

Here is my messy code, I don’t really do any coding so I was winging it.