apps.py 文件源码

def update_site(sender, **kwargs):
    """
    Update `Site` object matching `SITE_ID` setting with `SITE_DOMAIN` and
    `SITE_PORT` settings.
    """
    Site = apps.get_model('sites', 'Site')
    domain = settings.SITE_DOMAIN
    if settings.SITE_PORT:
        domain += ':%s' % settings.SITE_PORT
    Site.objects.update_or_create(
        pk=settings.SITE_ID,
        defaults=dict(
            domain=domain,
            name=settings.SITE_NAME))

    # We set an explicit pk instead of relying on auto-incrementation,
    # so we need to reset the database sequence.
    sequence_sql = connection.ops.sequence_reset_sql(no_style(), [Site])
    if sequence_sql:
        cursor = connection.cursor()
        for command in sequence_sql:
            cursor.execute(command)