型号：

protected $validationRules = [
    'username' => 'required'
];
protected $validationMessages = [
    'username' => [
        'required' => 'Please enter a username'
    ]
];

控制器：

if($this->request->getMethod()== 'post'){
    
                $usermodel = new \App\Models\Users;
                $User = $usermodel
                ->where('username' , $this->request->getPost('username'))
                ->first();
    
                if(!$User){
                    print_r($usermodel->errors());
                    /*return redirect()->to('/login')->with('errors' , $usermodel->errors())->withInput();*/
                }

检视：

<?php if(session()->has('errors')): ?>
    <div class="alert alert-warning">
        <ul>
            <?php foreach(session('errors') as $error): ?>
                
                    <li><?= $error ?></li>
                
            <?php endforeach; ?>
        </ul>
    </div>
<?php endif; ?>

我知道我已经注解掉了return语句。我在控制器中得到了与print_r（）相同的空数组，也得到了“return redirect with view”。

**但是：**如果我在控制器中手动指定闪存消息，则会收到“错误pw”消息：

if(!$UserFromDB){
                return redirect()->to('/login')->with('errors' , array('Wrong pw'))->withInput();
                /*print_r($usermodel->errors());*/
                /*return redirect()->to('/login')->with('errors' , $usermodel->errors())->withInput();*/
 }