'sendCmd('save "' + playlistname + '"')' return? (Solved)

[irishwill2008]

Hi there,

If i add a playlist that already exists. I.E: I add a playlist with the name test, i then try to add another playlist forgetting i already named one test but when i try add test it doesnt add it or replaces, not sure.

But i want it to display a message saying it already exists!
Thing is, it doesnt return true or false.. Not sure what it returns and cant find the save command reference. I checked command/index.php but not in there.

My code:

Code: Select all

$('#modal-pl-save-btn').click(function(){
   var playlistname = $('#pl-save-name').val();
   if (playlistname != "")
   {
      if (sendCmd('save "' + playlistname + '"'))
      {
              new PNotify({
                   title: 'Success',
                   text: 'Playlist Added',
                   icon: 'fa fa-check',
                   delay: 3000
             });
      }
      else
      {
         new PNotify({
            title: 'Error',
            text: 'Playlist Exists!',
            icon: 'fa fa-exclamation-circle',
            delay: 3000
         });
      }
   }
   else
   {
      new PNotify({
         title: 'Warning',
         text: 'Please Input A Name',
         icon: 'fa fa-exclamation-circle',
         delay: 3000
      });
   }
});


[surfninja]

I don't know python but a quick google found this.

you might want to check if the playlist exists before calling sendCmd to create a new list.

[irishwill2008]

SurfNinja, didnt think of that! What a great idea xD Will give that a shot, i could use some JS to check if it exists or not anyway Great call on the file check!

I was just doing a simple fail / success check guessing the system knows it encounters the issue - failing the command but honestly dont know what it returns so..

Thanks!

[hondagx35]

Hi,

Rune Audio is a client server application and nearly all is done asynchronous.

An example to explain synchronous versus asynchronous:
You are calling your local dealer to ask him if a special product is available.

synchronous:
- you: "Hello, do you have that green round shiny thing available?"
- he: "Sorry i have to check this, please wait"
- you: waiting, waiting ............... hmm .... waiting
- he: "Sorry we only have a blue round dull thing."

asynchronous:
- you: "Hello, do you have that green round shiny thing available?"
- he: "Sorry i have to check this, please wait. Will call you back soon!"
- you: doing something else until he calls back
- he: "Sorry we only have a blue round dull thing."

Saving a playlist is done by passing "mpc save playlistname" to

Code: Select all

function sendCmd(inputcmd) {
    $.ajax({
        type: 'GET',
        url: '/command/?cmd=' + inputcmd + '&clientUUID=' + GUI.clientUUID,
        cache: false
    });
}

You have to use the callback mechanism to get a response.
This may look like this

Code: Select all

function notify_user(result) {
   if (!result.match("^OK")) {
        new PNotify({
            title: 'Error',
            text: result,
            icon: 'fa fa-exclamation-circle',
            delay: 3000
        });
    }
}

// send a MPD playback control command
function sendCmd(inputcmd) {
    $.ajax({
        type: 'GET',
        url: '/command/?cmd=' + inputcmd + '&clientUUID=' + GUI.clientUUID,
        cache: false,
        success: notify_user
    });
}

Frank

[surfninja]

Frank, your example is very, very good. Danke! It is always good to know that how the asynchronous communications work through mpc (mpd's client) and not through the file system.