def get_video_json(video):
    """
    helper function: given an image, return the json to pass back to the
    image chooser panel
    """

    return json.dumps({
        'id': video.id,
        'edit_link': reverse('wagtailvideos:edit', args=(video.id,)),
        'title': video.title,
        'preview': {
            'url': video.thumbnail.url if video.thumbnail else '',
        }
    })
def get_video_json ( video ) : return json . dumps ( { 'id' : video . id , 'edit_link' : reverse ( 'wagtailvideos:edit' , args = ( video . id , ) ) , 'title' : video . title , 'preview' : { 'url' : video . thumbnail . url if video . thumbnail else '' , } } )
helper function: given an image, return the json to pass back to the
    image chooser panel