Laravel 5.5 boot() in model

gistfile1.txt

public static function boot()
{
    parent::boot();

    self::deleting(function($model) {
        if($model->default == 1)
            return false;
    });

    self::updated(function($model){
        
    })
}


    public static function boot()
    {
        parent::boot();

        self::creating(function($model){
            // ... code here
        });

        self::created(function($model){
            // ... code here
        });

        self::updating(function($model){
            // ... code here
        });

        self::updated(function($model){
            // ... code here
        });

        self::deleting(function($model){
            // ... code here
        });

        self::deleted(function($model){
            // ... code here
        });
    }