解决Laravel 8 undefined variable错误问题

下面由Laravel教程栏目带大家介绍如何解决Laravel 8 使用mailable发送邮件，undefined variable错误问题，希望对大家有所帮助！

具体问题：

Laravel 8 使用mailable发送邮件，undefined variable错误？

Laravel 8 使用 mailable 的方法发送邮件，一直出现 undefined variable 的错误，但是参照网上的解决方案，使用 public 定义 variable，但是还是报同样的错误

  public $jobdocumentmessage;     /**      * Create a new message instance.      *      * @return void      */     public function __construct($jobdocumentmessage)     {         $this->jobdocumentmessage = $jobdocumentmessage;     }     /**      * Build the message.      *      * @return $this      */     public function build()     {         #dd($jobdocumentmessage);         return $this->view('emails.jobDocument')                     ->with([                         'body' => $jobdocumentmessage->body,                         'user' => $jobdocumentmessage->user,                         ])                     ->subject($jobdocumentmessage->subject)                     ->replyTo($jobdocumentmessage->mail)                     ->attach($jobdocumentmessage->url, ['as' => $jobdocumentmessage->name                 ]);     }

解决办法：

  public $jobdocumentmessage;      /**      * Create a new message instance.      *      * @return void      */     public function __construct($jobdocumentmessage)     {         $this->jobdocumentmessage = $jobdocumentmessage;     }      /**      * Build the message.      *      * @return $this      */     public function build()     {         $jobdocumentmessage= $this->jobdocumentmessage ;         return $this->view('emails.jobDocument')                     ->with([                         'body' => $jobdocumentmessage->body,                         'user' => $jobdocumentmessage->user,                         ])                     ->subject($jobdocumentmessage->subject)                     ->replyTo($jobdocumentmessage->mail)                     ->attach($jobdocumentmessage->url, ['as' => $jobdocumentmessage->name                 ]);     }