PhotoAlbumViewer - Prevent Data Duplication

[aIsmail]

I was extending one of qt examples, it's simply loading images from local disk, then show them in albums view ..
I make something like this,

main.qml

ListModel{
id: photosModel
}
// File dialog for selecting image file from local file system
FileDialog {
    id: fileDialog
    title: "Choose a folder"
    nameFilters: [ "Image files (*.png *.jpg *.jpeg)"]
    selectFolder: true
    onAccepted: {
        mainWindow.editMode = false
        photosModel.append({folder: fileDialog.folder + "/"})
    }
}
 
function getFolderUrl(){
    return fileDialog.fileUrl + "/"
}
 
DelegateModel { id: albumVisualModel; model: photosModel; delegate: AlbumDelegate {} }
 
GridView {
    id: albumView; width: parent.width; height: parent.height; cellWidth: 210; cellHeight: 220
    model: albumVisualModel.parts.album; visible: albumsShade.opacity != 1.0
}

ListModel{
id: photosModel
}
// File dialog for selecting image file from local file system
FileDialog {
    id: fileDialog
    title: "Choose a folder"
    nameFilters: [ "Image files (*.png *.jpg *.jpeg)"]
    selectFolder: true
    onAccepted: {
        mainWindow.editMode = false
        photosModel.append({folder: fileDialog.folder + "/"})
    }
}

function getFolderUrl(){
    return fileDialog.fileUrl + "/"
}

DelegateModel { id: albumVisualModel; model: photosModel; delegate: AlbumDelegate {} }

GridView {
    id: albumView; width: parent.width; height: parent.height; cellWidth: 210; cellHeight: 220
    model: albumVisualModel.parts.album; visible: albumsShade.opacity != 1.0
}

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AlbumDelegate.qml

Item {
Package.name: 'album'
id: albumWrapper; width: 210; height: 220
 
        DelegateModel {
            id: visualModel; delegate: ImageDelegate { }
            model: FilesModel { id: rssModel; folder: mainWindow.getFolderUrl()}
        }
....
}

Item {
Package.name: 'album'
id: albumWrapper; width: 210; height: 220

        DelegateModel {
            id: visualModel; delegate: ImageDelegate { }
            model: FilesModel { id: rssModel; folder: mainWindow.getFolderUrl()}
        }
....
}

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ImageDelegate.qml
.....
Image {
id: originalImage; antialiasing: true; asynchronous: true
source: "image://provider/"+ rssModel.folder +fileName;cache: false;
fillMode: Image.PreserveAspectFit; width: photoWrapper.width; height: photoWrapper.height
}
....
}

ImageDelegate.qml
.....
Image {
id: originalImage; antialiasing: true; asynchronous: true
source: "image://provider/"+ rssModel.folder +fileName;cache: false;
fillMode: Image.PreserveAspectFit; width: photoWrapper.width; height: photoWrapper.height
}
....
}

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The main problem is that when I load more than one folder I got all folders point to the same url, any help in this ?