def robotsrulesetOfDomain(self, domain):
		'''检查domain是否在数据库中,
			否 --> (False, None)
			是 --> (True, 数据库中存储的robots.txt内容)
		'''
		exist = False
		cur = self.conn.cursor()
		# 是否存在
		cur.execute("SELECT 1 FROM Domains WHERE domain=?", (domain,))
		if cur.fetchone() :
			exist = True
		# 存在的话,结果是什么
		cur.execute("SELECT rules FROM Domains,Rulesets "
			"WHERE domain=? AND Domains.did=Rulesets.did"
			,(domain,) )
		ruleset = cur.fetchone()
		return (exist, ruleset)
def disable_plugin(plugin):
    try:
        plugin = get_plugin(plugin)
    except KeyError:
        flash(_("Plugin %(plugin)s not found.", plugin=plugin.name), "danger")
        return redirect(url_for("management.plugins"))

    try:
        plugin.disable()
        flash(_("Plugin %(plugin)s disabled. Please restart FlaskBB now.",
                plugin=plugin.name), "success")
    except OSError:
        flash(_("It seems that FlaskBB does not have enough filesystem "
                "permissions. Try creating the 'DISABLED' file by "
                "yourself instead."), "danger")

    return redirect(url_for("management.plugins"))