laravel 5.1 - model::update() 函数未调用特征引导

Question

我在本页 app/Traits/ModelEventThrower.php

创建了如下特征

namespace App\Traits;

use Input;
use Event;
use App\Events\ActivityLog;
use Illuminate\Database\Eloquent\Model;
//use Illuminate\Support\Facades\Event;

/**
 * Class ModelEventThrower 
 * @package App\Traits
 *
 *  Automatically throw Add, Update, Delete events of Model.
 */
trait ModelEventThrower {

    /**
     * Automatically boot with Model, and register Events handler.
     */
    protected static function bootModelEventThrower()
    {

        foreach (static::getModelEvents() as $eventName) {

            static::$eventName(function (Model $model) use ($eventName) {
                try {

                    $reflect = new \ReflectionClass($model);

                    echo "here";exit;

                  } catch (\Exception $e) {
                    return true;
                }
            });
        }
    }

    /**
     * Set the default events to be recorded if the $recordEvents
     * property does not exist on the model.
     *
     * @return array
     */
    protected static function getModelEvents()
    {
        if (isset(static::$recordEvents)) {
            return static::$recordEvents;
        }

        return [
            'created',
            'updated',
            'deleted',
        ];
    }
}

我的城市模型是这样的

namespace App;

use App\Traits\ModelEventThrower;
use App\Events\ActivityLog;

use Illuminate\Database\Eloquent\Model;
use Event;

class City extends Model
{
    use ModelEventThrower;
    //protected static $recordEvents = ['updated'];
...
}

我的 CitiesController 是

namespace App\Http\Controllers\Admin;

use App\City;
use App\Country;
use Input;
use Validator;

use Illuminate\Http\Request;

use App\Http\Requests;
use App\Http\Controllers\Controller;

class CitiesController extends Controller
{
......
    public function update(City $city,Request $request)
    {
     ......
    $city->where('id','=',$input['id'])->update($input);

不知何故，我没有看到它调用了写在特征文件中的函数。当我尝试创建 $city->create($input); 时，它回显 "here" 并停止执行，但对更新功能没有做同样的事情，但是我可以成功更新记录。

任何 suggestion/help 将不胜感激。

Answer 1

我遇到了与 Laravel 类似的问题。通过在模型中添加一个构造函数来调用父Model的boot()函数，像这样：

public function __construct()
{
    parent::boot();
}

您可以确保所有特征都已启动。这为我解决了。

laravel 5.1 - model::update() 函数未调用特征引导

laravel 5.1 - trait boot not being called for model::update() function

laravel

laravel-5.1