php-Laravel方法通知不存在

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我试图通知用户是否将新表单插入数据库,但是出现此错误：

BadMethodCallException in Macroable.PHP line 74: Method notify does not exist.

这是通知类

<?PHP

namespace App\Notifications\Admin;

use Illuminate\Bus\Queueable;
use Illuminate\Notifications\Notification;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Notifications\messages\Mailmessage;

use App\Models\Admin\Forms\Prescriptions;

class PrescriptionNotification extends Notification
{
    use Queueable;

    public $Prescription;

    /**
     * Create a new notification instance.
     *
     * @return void
     */
    public function __construct(Prescriptions $Prescription)
    {
        $this->Prescriptions = $Prescription;
    }

    /**
     * Get the notification's delivery chAnnels.
     *
     * @param  mixed  $notifiable
     * @return array
     */
    public function via($notifiablE)
    {
        return ['database'];
    }

    /**
     * Get the mail representation of the notification.
     *
     * @param  mixed  $notifiable
     * @return \Illuminate\Notifications\messages\Mailmessage
     */
    public function toMail($notifiablE)
    {
        $url = url('/admin/prescriptions/edit/'.$this->Prescriptions->id);

        return (new MailmessagE)
                    ->line('New form')
                    ->action('View', $url)
                    ->line('');
    }

    /**
     * Get the array representation of the notification.
     *
     * @param  mixed  $notifiable
     * @return array
     */
    public function toArray($notifiablE)
    {
        return [
            'test' => 'test'
        ];
    }
}

在我的控制器中,我正在这样做：

 $users = App\User::all()->where('role', 3);
 //trigger email notification
 $Prescription = Prescriptions::first();
 $users->notify(new PrescriptionNotification($Prescription));

正在遵循This教程,但仍然无济于事.我的用户模型中有Notifiable.还有什么可以做的？我不知道是什么导致了此错误.

根据要求,我的User类：

<?PHP

namespace App;

use Illuminate\Notifications\Notifiable;
use Illuminate\Foundation\Auth\User as Authenticatable;

class User extends Authenticatable
{
    use Notifiable;

    /**
     * The attributes that are mass assignable.
     *
     * @var array
     */
    protected $fillable = [
        'name', 'email', 'password',
    ];

    /**
     * The attributes that should be hidden for arrays.
     *
     * @var array
     */
    protected $hidden = [
        'password', 'remember_token',
    ];

    //is admin
    public function isAdmin()
    {
        return $this->role; // this looks for an admin column in your users table
    }

    //relationship with prescription forms
    public function confirmations()
    {
        return $this->hasmany('App\Models\Admin\Forms\Prescription_confirmations', 'physician_id');
    }

    //relationship with prescriptions forms
    public function prescriptions()
    {
        return $this->hasmany('App\Models\Admin\Forms\Prescriptions', 'physician_id');
    }
}

解决方法:

$users是一个集合,因此您在集合上调用notify方法,这将导致错误.并且方法notify仅存在于用户对象实例上.

你可以这样做

<?PHP
foreach ($users as $user) {
    $user->notify(new PrescriptionNotification($Prescription));
}

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