TP6.0中的密码验证逻辑、验证器的使用

<form action="" method="post">
用户名 <input type="text" name="username" value="liang" readonly autocomplete="off"><br>
手机号 <input type="text" name="mobile" value="10086" autocomplete="off"><br>
新密码 <input type="password" name="password" placeholder="可选项,留空则不修改密码"><br>
<button>确认修改</button>
</form>

<?php
namespace app\validate;

use think\Validate;

class User extends Validate
{
/**
* 定义验证规则
*/
protected $rule = [
'username' => 'require|unique:user',
'password' => 'require|length:4,16|confirm',
'mobile' => 'require',
];

/**
* edit 验证场景 编辑用户信息
*/
public function sceneEdit()
{
return $this
->remove('username', 'unique')
->remove('password', 'require|confirm');
}
}

public function edit()
{
if ($this->request->isPost()) {
$data = input('post.');
try {
validate('app\validate\User')
->scene('edit')
->batch(true)
->check($data);
} catch (\think\exception\ValidateException $e) {
halt('验证失败', $e->getError());
}
echo '通过验证';
} else {
return view();
}
})

<form action="" method="post">
用户名 <input type="text" name="username" value="liang" readonly autocomplete="off"><br>
手机号 <input type="text" name="mobile" value="10086" autocomplete="off"><br>
新密码 <input type="password" name="password" placeholder="可选项,留空则不修改密码"><br>
确认密码 <input type="password" name="newpassword" placeholder="必须和新密码文本框保持一致">
<br><button>确认修改</button>
</form>

<?php
namespace app\validate;

use think\Validate;

class User extends Validate
{
/**
* 定义验证规则
*/
protected $rule = [
'username' => 'require|unique:user',
'password' => 'require|length:4,16|confirm',
'mobile' => 'require',
];

/**
* 定义错误信息
*/
protected $message = [
'newpassword.requireWith' => '确认密码不能为空',
'newpassword.confirm' => '两个新密码不一致',
];

/**
* edit 验证场景 编辑用户信息
*/
public function sceneEdit()
{
return $this
->remove('username', 'unique')
->remove('password', 'require|confirm')
->append('newpassword', 'requireWith:password|confirm:password');
}
}

public function edit()
{
if ($this->request->isPost()) {
$data = input('post.');
try {
validate('app\validate\User')