Laravel Eloquent 模型覆盖静态启动方法
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Laravel Eloquent model overriding static boot method
提问by Chris Muench
I want to override model events and found this example code but am not sure I understand it completely.
我想覆盖模型事件并找到此示例代码，但不确定我是否完全理解它。
SOURCE:
来源：
http://driesvints.com/blog/using-laravel-4-model-events/
http://driesvints.com/blog/using-laravel-4-model-events/
There is a static method with another static method in it...How does that work? Or is it setting a static property in the boot method somehow?
有一个静态方法和另一个静态方法......它是如何工作的？或者它是否以某种方式在引导方法中设置了静态属性？
<?php
class Menu extends Eloquent {
protected $fillable = array('name', 'time_active_start', 'time_active_end', 'active');
public $timestamps = false;
public static $rules = array(
'name' => 'required',
'time_active_start' => 'required',
'time_active_end' => 'required'
);
public static function boot()
{
parent::boot();
static::saving(function($post)
{
});
}
}
回答by lukasgeiter
static::saving()just calls the static method savingon itself (and parent classes if not existent in current class). So it is essentially doing the same as:
static::saving()只调用saving自身的静态方法（如果当前类中不存在父类）。所以它本质上与以下内容相同：
Menu::saving(function($post){
});
So it is registering a callback for the savingevent within the boot function.
所以它正在为saving引导函数中的事件注册一个回调。
