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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                ]);    }

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