get and set rating with JavaScript

[f_magician]

I am trying to get and set the rating (stars) of JPEG and RAW data with JavaScript, but I cannot find an interface to do this.

I already get the file name and other information. Is there any techniques?

#target bridge

var selectedItems = app.document.selections;
var currentFolder = null;
if (selectedItems.length > 0) {
    currentFolder = selectedItems[0].parent.path;
} else {
    currentFolder = "~/Pictures";
}

var d = Folder.selectDialog("select folder", currentFolder);
var f = d.getFiles();

for(var i = 0; i < f.length; i++){
    alert(f[i].name, f[i].rating); // rating is undefined
}

[ExUSA]

You can't use files, you need to use thumbnails. RAW files don't have a rating. That info is stored in the XMP sidecar which is a separate file.

thumbs = app.document.selections;
for(var i = 0; i < thumbs.length; i++){
   thumbs[i].rating = 1;
   }

[f_magician]

Thanks. I misunderstood the implementation.

What I ultimately wanted to do was select two folders with the file dialog and copy the ratings in one folder to the other.
It is easy to do getFiles() from selectDialog(), but is it possible to access the thumbnails (or ratings) in a specific folder as well?

[ExUSA]

You would have to do matching of filenames, have you written that part?