CodeIgniter 4 - 验证自定义规则函数 Quandry

CodeIgniter 4 - Validation Custom Rule Function Quandry

在我的CI4学习中,我从尝试模拟用户登录功能开始。我有一个控制器,两个视图(此处未显示,但实际上只是页面 - 一个几乎只是单一表单,另一个是“空白”成功页面 HTML),一组自定义规则 Validation.php 文件,以及一个 CustomRule.php 文件,其中第一个方法将实现我所有的自定义规则(最终,我希望在 Validation.php 文件中进行所有设置)。由于没有更好的主意,我将 CustomRules.php 文件放在 app\Config\ 文件夹中。

这是我的问题:

对于我的生活,我无法弄清楚如何让验证服务将附加参数(从表单)传递到我名为“user_validated”的自定义规则函数。 CI4 文档描述了自定义函数在接受附加参数时需要满足的条件,但没有描述如何触发验证服务将这些附加参数传递给自定义函数……所以尽管调用了“user_validated”,但只有“user_email_offered' 曾经作为字符串传递 - 据我所知,没有其他内容。我该如何解决这个问题?

我试过插入 < $validation->setRuleGroup('user_signin'); > 在验证调用之前,但发现我可以将规则组的设置移动到验证调用中,使用:$validationResult = $this->validate('user_signin'),这似乎是一样的,如果没有规则组作为参数(?),这似乎不起作用。这似乎仍然不是触发将附加数据传递给自定义规则方法的原因。

我的技巧摘录附在下面。

非常感谢你们中的一位知识渊博的人能为我指明正确的方向。


在app\Controllers\SignupTest.php:

<?php

    namespace App\Controllers;

    use CodeIgniter\Controller;

    class SignupTest extends BaseController
    {

            public function index() {   // redirection from the default to signup(), signin(), ...

                return $this->signup();

            }


            public function signup() {

                helper(['form']);

                $validation = \Config\Services::validation();

                if ($this->request->getPost()) {     // still TBD: any different to using $this->request->getGetPost() ?

                    $validationResult = $this->validate('user_signin'); // set the rules to use: 'user_signin', 'user_signup'

                    if (!$validationResult) {

                        $validationErrors = $validation->getErrors();

                        return view('SignupTestView', $validationErrors);   // redisplay simple html form view with list of validation errors

                    } else {

                        return view('SignupTestViewSuccess');  // display view to show success 
                    }
                } else {

                    return view('SignupTestView');   // initial display, in the event of there being no POST data 

                }
            }
    }

在\app\Config\CustomRules.php中:

<?php

    namespace Config;

    use App\Models\UserModel;

    //--------------------------------------------------------------------
    // Custom Rule Functions 
    //--------------------------------------------------------------------

    class CustomRules
    { 


        public function user_validated(string $str, string $fields = NULL, array $data = NULL, string &$error = NULL) : bool{            

             $user_email_offered = $str;
             $user_password_offered = '';    // to be extracted using $fields = explode(',', $fields), but $fields is never provided in the call to this user_validated method


            if (($user_email_offered !== NULL) && ($user_password_offered !== NULL)) {

                $usermodel = new UserModel();   // intended to create a UserEntity to permit connectivity to the database 

                $user_found = $usermodel->find($user_email_offered);    // we're going to assume that user_email is unique (which is a rule configured in the database table)

                if ($user_found === NULL) { // check if user exists before doing the more involved checks in the else-if section below, which may throw exceptions if there's nothing to compare (?)

                ...   

          }

}

在\app\Config\Validation.php中:

?php 
    namespace Config;

    class Validation
    {
        //--------------------------------------------------------------------
        // Setup
        //--------------------------------------------------------------------

        /**
         * Stores the classes that contain the
         * rules that are available.
         *
         * @var array
         */
        public $ruleSets = [
            \CodeIgniter\Validation\Rules::class,
            \CodeIgniter\Validation\FormatRules::class,
            \CodeIgniter\Validation\FileRules::class,
            \CodeIgniter\Validation\CreditCardRules::class,
            \Config\CustomRules::class,
        ];

        /**
         * Specifies the views that are used to display the
         * errors.
         *
         * @var array
         */
        public $templates = [
            'list'   => 'CodeIgniter\Validation\Views\list',
            'single' => 'CodeIgniter\Validation\Views\single',
        ];

        //--------------------------------------------------------------------
        // Custom Rules
        //--------------------------------------------------------------------

        /* configurable limits for validation rules array below*/
        const user_email_min_lenth = 9;  
        const user_email_max_lenth = 50; 
        const user_password_min_lenth = 6;   
        const user_password_max_lenth = 25;  


        public $user_signin = [
            'user_email' => [
                'label' => 'e-mail address',
                'rules' => 'trim|required|valid_email|user_validated',  // user_validated is custom rule, that will have a custom error message
                'errors' => [
                    'required' => 'You must provide an {field}',
                    'valid_email' => 'Please enter a valid {field}',
                ]
            ],
            'user_password' => [
                'label' => 'password',
                'rules' => 'trim|required',
                'errors' => [
                    'required' => 'Enter a {field} to sign in',
                    'user_password_check' => 'No such user/{field} combination found',
                ] 

调用带参数的自定义规则应该和调用CI4的常规规则完全一样。让我们举个例子 "required_without"。您可以像在这个例子中那样使用它:

$validation->setRule('username', 'Username', 'required_without[id,email]');

函数声明如下:

public function required_without($str = null, string $fields, array $data): bool
{
    $fields = explode(',', $fields);
//...
}

其中 $str - 这是您的主字段,$fields - 字符串,用逗号分隔的数组包装。

至于分组规则,您不需要分组规则就可以使用带参数的自定义规则。

如果你只有 2 个字段要测试,你可以便宜一点,虽然不完美但仍然有效:

函数:

public function myrule(string $mainfield, string $fieldtotestwith): bool
{
//doing stuff
}

验证规则:

$validation->setRule('somemainfield', 'Something', 'myrule[somesecondfield]');