Ninja Forms服务器端验证不工作

Question

我花了两天时间想弄明白这一点。我有一个wordpress页面与四场忍者形式。其中一个字段是电子邮件。我创建了一个API（在我们的.NET核心项目中），它检查并抛出一个400的错误，如果我们的DB中存在一个已经具有该电子邮件地址的邮件。我正在使用Ninja Forms Webhook特性将表单提交给我的API。我只想向用户显示我的400错误消息。

我正在使用以下来自Ninja Forms的文档，但它不起作用：

https://developer.ninjaforms.com/codex/custom-server-side-validation/

更具体地说，我得到的是一个500与以下错误在控制台：

Uncaught Error: Call to undefined function my_nf_validation() in \/home\/site\/wwwroot\/wp-content\/themes\/hello-elementor\/functions.php:245\nStack trace:\n#0 \/home\/site\/wwwroot\/wp-includes\/class-wp-hook.php(287): {closure}(Array)\n#1 \/home\/site\/wwwroot\/wp-includes\/plugin.php(206): WP_Hook->apply_filters(Array, Array)\n#2 \/home\/site\/wwwroot\/wp-content\/plugins\/ninja-forms\/includes\/AJAX\/Controllers\/Submission.php(132): apply_filters('ninja_forms_sub...', Array)\n#3 \/home\/site\/wwwroot\/wp-includes\/class-wp-hook.php(287): NF_AJAX_Controllers_Submission->submit('')\n#4 \/home\/site\/wwwroot\/wp-includes\/class-wp-hook.php(311): WP_Hook->apply_filters('', Array)\n#5 \/home\/site\/wwwroot\/wp-includes\/plugin.php(478): WP_Hook->do_action(Array)\n#6 \/home\/site\/wwwroot\/wp-admin\/admin-ajax.php(175): do_action('wp_ajax_nf_ajax...')\n#7 {main}\n  thrown<\/pre>"},"last":{"type":1,"message":"Uncaught Error: Call to undefined function my_nf_validation() in \/home\/site\/wwwroot\/wp-content\/themes\/hello-elementor\/functions.php:245\nStack trace:\n#0 \/home\/site\/wwwroot\/wp-includes\/class-wp-hook.php(287): {closure}(Array)\n#1 \/home\/site\/wwwroot\/wp-includes\/plugin.php(206): WP_Hook->apply_filters(Array, Array)\n#2 \/home\/site\/wwwroot\/wp-content\/plugins\/ninja-forms\/includes\/AJAX\/Controllers\/Submission.php(132): apply_filters('ninja_forms_sub...', Array)\n#3 \/home\/site\/wwwroot\/wp-includes\/class-wp-hook.php(287): NF_AJAX_Controllers_Submission->submit('')\n#4 \/home\/site\/wwwroot\/wp-includes\/class-wp-hook.php(311): WP_Hook->apply_filters('', Array)\n#5 \/home\/site\/wwwroot\/wp-includes\/plugin.php(478): WP_Hook->do_action(Array)\n#6 \/home\/site\/wwwroot\/wp-admin\/admin-ajax.php(175): do_action('wp_ajax_nf_ajax...')\n#7 {main}\n  thrown","file":"\/home\/site\/wwwroot\/wp-content\/themes\/hello-elementor\/functions.php","line":245}},"debug":[]}

我将代码放在Themes Editor的function.php文件中。这是我第一次使用wordpress，所以我希望我做得对。这是我的代码，直接取自上面的文档：

add_filter( 'ninja_forms_submit_data', function( $form_data ){

  if( ! my_nf_validation( $form_data ) ) { // Add check here.

    $errors = [
      __( 'An unexpected error occurred.', 'my-plugin' )
    ];

    $response = [
        'errors' => $errors,
    ];

    echo wp_json_encode( $response );
    wp_die(); // this is required to terminate immediately and return a proper response
  }

  // If no errors, be sure to return the $form_data.
  return $form_data;
});

我真的很感谢任何人的帮助。

Answer 1

文档引用了一个自定义的WordPress过滤器，由Ninja Forms插件定义。过滤器是WordPress钩子的一个功能，它允许一个主题或插件修改另一个主题或插件的功能。参见https://developer.wordpress.org/plugins/hooks/filters/

对于您的问题，Webhooks插件插件（Ninja Forms的官方扩展）不需要使用您从文档中引用的过滤器。

相反，您需要用自己定义的函数替换“my_nf_validation()”，如文档中所示。

您的函数需要处理API请求和响应处理。在文档示例中，自定义函数返回一个布尔值。

Answer 2

试试下面的代码，它会起作用的。

function validateCode($field){

if( checkCondition ){
    // let it go
    return true;
}
else{
    return false;
}
}
add_filter( 'ninja_forms_submit_data', 'my_ninja_forms_submit_data' );
function my_ninja_forms_submit_data( $form_data ) {
$form_settings = $form_data[ 'settings' ]; // Form settings.
if($form_data['id'] == '2'){
    foreach( $form_data[ 'fields' ] as $field ) { // Field settigns, including the field key and value.
        if( 'unique_code' == $field[ 'key' ] ){

            if(!validateCode($field)){
                $form_data['errors']['fields'][$field['id']] = "INVALID CODE";
            }
        }
    }
}
return $form_data;
}