检查模型是否存在多对多关系的最佳方法 [英] Best way to check if a Model exists in a many-to-many relationship

问题描述

我有一些数据发布到服务器，并且正在基于该数据(id)检索一个Player.我正在使用以下代码:

I have some data being posted to the server and am retrieving a Player based on that data (an id). I am using the following code:

$player = Player::findOrFail($player_data['id']);

但是，我要检查此Player是否属于特定的Team-belongsToMany关系.

However, I want to check that this Player belongs to a specific Team - a belongsToMany relationship.

有没有比以下更好的方法了?

Is there a better way than something like:

if (! count($player->team()->find($teamId))) {
    // exit early, form may have been 'hacked'
    abort(404);
}

?

team()而不是teams()，即使它是多对多的.

team() and not teams(), even though its a many-to-many.

推荐答案

使用 contains() 方法:

$player->team->contains($teamId);

contains方法确定集合是否包含给定项

The contains method determines whether the collection contains a given item

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