Check if comments are open for the instance

def get_comments_are_open(instance):
    """
    Check if comments are open for the instance
    """
    if not IS_INSTALLED:
        return False

    try:
        # Get the moderator which is installed for this model.
        mod = moderator._registry[instance.__class__]
    except KeyError:
        # No moderator = no restrictions
        return True

    # Check the 'enable_field', 'auto_close_field' and 'close_after',
    # by reusing the basic Django policies.
    return CommentModerator.allow(mod, None, instance, None)