views.py

def directorylink_detail(request, folder_id, directory_id, identifier):
    folder = Folder.objects.get(pk=folder_id)
    directory = Directory.objects.get(pk=directory_id)
    directorylink = DirectoryLink.objects.get(identifier=identifier)

    if directory.folder != folder:
        # Prevent URL hacking.
        return HttpResponseNotFound('<h1>Page not found</h1>')

    if directorylink.directory != directory:
        # Prevent URL hacking.
        return HttpResponseNotFound('<h1>Page not found</h1>')

    directorylink_total_downloads = {}
    for file in directory.file_set.all():
        logs = FileDownloadLogDetail.objects.filter(
            directorylink=directorylink, file=file).aggregate(Count('file'))
        directorylink_total_downloads[file.id] = logs['file__count']


    return render(request, 'management/folders/directorylink_detail.html', {
        'folder': folder,
        'directory': directory,
        'directorylink': directorylink,
        'directorylink_total_downloads': directorylink_total_downloads,
    })