# 當(dāng)現(xiàn)有模型被數(shù)據(jù)庫檢索時(shí)
retrieved
# 當(dāng)一個(gè)新的模型被第一次保存時(shí)
creating
created
# 對一個(gè)已經(jīng)存在于數(shù)據(jù)庫的模型調(diào)用 save 方法
updating
updated
# 當(dāng)模型數(shù)據(jù)被刪除時(shí)
deleting
deleted
# 當(dāng)創(chuàng)建和更新執(zhí)行時(shí)都會調(diào)用
saving
saved
# 當(dāng)啟用軟刪除的數(shù)據(jù)被恢復(fù)時(shí)
restoring
restored
# 當(dāng)啟用軟刪除的數(shù)據(jù)被強(qiáng)制刪除時(shí)
forceDeleted
# 復(fù)制
replicating
# 指定模型的指定事件被觸發(fā)時(shí)(注意 $name 前有個(gè)空格)
# event 對應(yīng)以上的事件類型
# name 對應(yīng)的是模型的類名稱
eloquent.{$event}: {$name}

<?php
Class PamAccount extend Model
{
    public static function boot()
    {
        parent::boot();
        self::deleting(function ($user){
            if (!method_exists((new static::class), 'bootSoftDeletes')) {
                $user->roles()->sync([]);
            }
            return true;
        });
    }
}

protected static function boot()
{
    static::bootTraits();
}

<?php
namespace App;
use Illuminate\Support\Facades\Log;
use Illuminate\Support\Facades\Auth;
use Illuminate\Support\Str;
trait HasToken
{
    /**
     * Boot the trait
     *
     * @return void
     */
    protected function bootHasToken()
    {
        static::created(function ($model) {
            // Log who created this model
            Log::info('Token for ' . class_basename($model) . ' created by ' . Auth::user()->getKey());
        });
    }
    /**
     * Initialize the trait
     *
     * @return void
     */
    protected function initializeHasToken()
    {
        // Automatically create a random token
        $this->token = Str::random(100);
    }
}

/**
 * Boot the trait
 * 
 * @return void
 */
protected function bootHasToken()
{
    static::created(function ($model) {
        // Log who created this model
        Log::info('Token for ' . 
            class_basename($model) . 
           ' created by ' . 
           Auth::user()->getKey()
        );
    });
}

/**
 * Initialize the trait
 *
 * @return void
 */
protected function initializeHasToken()
{
    // Automatically create a random token
    $this->token = Str::random(100);
}