每次我调用Auth :: user()时，Laravel都会查询数据库吗? [英] Does Laravel query database each time I call Auth::user()?

问题描述

在我的Laravel应用程序中，我在多个地方使用了Auth::user().我只是担心Laravel可能会在每次Auth::user()

In my Laravel application I used Auth::user() in multiple places. I am just worried that Laravel might be doing some queries on each call of Auth::user()

请忠告

推荐答案

不缓存用户模型.让我们来看看Illuminate\Auth\Guard@user:

No the user model is cached. Let's take a look at Illuminate\Auth\Guard@user:

public function user()
{
    if ($this->loggedOut) return;

    // If we have already retrieved the user for the current request we can just
    // return it back immediately. We do not want to pull the user data every
    // request into the method because that would tremendously slow an app.
    if ( ! is_null($this->user))
    {
        return $this->user;
    }

正如评论所说，第一次检索用户后，它将存储在$this->user中，并在第二次调用时返回.

As the comment says, after retrieving the user for the first time, it will be stored in $this->user and just returned back on the second call.

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