Neat Django admin html decorators

util_db.py

def admin_html_link(short_description=None):
    """Neat Django admin html link decorator

    Example model usage:

    @util_db.admin_html_link("URL playlist")
    def url_playlist_html(self):
        return self.url_playlist

    or

    @util_db.admin_html_link("Parent HifiPlaylistHistory")
    def parent_html(self):
        if not self.parent:
            return None
        return self.parent.admin_url_relative, self.parent
    """
    def decorator(function):
        def wrapper(obj):
            result = function(obj)
            if not result:
                return "N/A"
            if isinstance(result, basestring):
                url, value = result, result
            else:
                url, value = result
            return '<a href="%s">%s</a>' % (url, value)
        wrapper.allow_tags = True
        if short_description:
            wrapper.short_description = short_description
        return wrapper
    return decorator


def admin_html_image(short_description=None):
    """Neat Django admin html image decorator

    Example model usage:

    @util_db.admin_html_image("URL image Hifi")
    def url_image_hifi_html(self):
        return self.url_image_hifi
    """
    def decorator(function):
        def wrapper(obj):
            url = function(obj)
            if not url:
                return "N/A"
            return '<img src="%s" />' % url
        wrapper.allow_tags = True
        if short_description:
            wrapper.short_description = short_description
        return wrapper
    return decorator