Creates a fake filesystem with playbook files and uses generate_tree() to
    recurse and return a JSON structure suitable for bootstrap-treeview.

def playbook_treeview(playbook):
    """
    Creates a fake filesystem with playbook files and uses generate_tree() to
    recurse and return a JSON structure suitable for bootstrap-treeview.
    """
    fs = fake_filesystem.FakeFilesystem()
    mock_os = fake_filesystem.FakeOsModule(fs)

    files = models.File.query.filter(models.File.playbook_id.in_([playbook]))

    paths = {}
    for file in files:
        fs.create_file(file.path)
        paths[file.path] = file.id

    return jsonutils.dumps(generate_tree('/', paths, mock_os),
                           sort_keys=True,
                           indent=2)