Using shields is the only surefire method through which to prevent your village from being attacked for an extended period of time.

I would reccomend spending all of your resources on upgrades before you leave, so that attackers have nothing to steal. However, changing your base to a farming layout will divert an attackers atention from your loot to your town hall.

One good example of a farming layout is TH9 (where the town hall is outside the walls):

^{Image from this thread on the Clash of Clans forum}

There is no way to prevent being attacked other than shields can.

I would recommend spending all of your resources on upgrades before you leave, so that attackers have nothing to steal. On the other hand, changing your base to a farming layout will divert an attackers atention from your loot to your town hall.

An example of a TH9 farming layout (town hall outside walls):

^{Image from this thread on the Clash of Clans forum}

There is no way to protect your village to prevent being attacked for a longer period of time than shields can.

I would reccomend spending all of your resources on upgrades before you leave, so that attackers have nothing to steal. On the other hand, changing your base to a farming layout will divert an attackers atention from your loot to your town hall.

An example of a TH9 farming layout (town hall outside walls):

^{Image from this thread on the Clash of Clans forum}

Using shields is the only surefire method through which to prevent your village from being attacked for an extended period of time.

I would reccomend spending all of your resources on upgrades before you leave, so that attackers have nothing to steal. However, changing your base to a farming layout will divert an attackers atention from your loot to your town hall.

One good example of a farming layout is TH9 (where the town hall is outside the walls):

^{Image from this thread on the Clash of Clans forum}