[wp-trac] [WordPress Trac] #44530: Post or page custom fields give wrong error message when enter value only.

[WordPress Trac]

#44530: Post or page custom fields give wrong error message when enter value only.
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 Reporter:  harsh175                   |       Owner:  (none)
     Type:  defect (bug)               |      Status:  closed
 Priority:  normal                     |   Milestone:
Component:  Editor                     |     Version:
 Severity:  normal                     |  Resolution:  worksforme
 Keywords:  has-screenshots has-patch  |     Focuses:
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Changes (by SirLouen):

 * status:  new => closed
 * resolution:   => worksforme
 * focuses:  administration =>
 * component:  Posts, Post Types => Editor
 * milestone:  Future Release =>


Comment:

 == Reproduction Report
 === Description
 ❌ This report can't validate that the issue can be reproduced.

 === Environment
 - WordPress: 6.9-alpha-60093-src
 - PHP: 8.2.29
 - Server: nginx/1.29.1
 - Database: mysqli (Server: 8.4.6 / Client: mysqlnd 8.2.29)
 - Browser: Chrome 140.0.0.0
 - OS: Windows 10/11
 - Theme: Twenty Sixteen 3.6
 - MU Plugins: None activated
 - Plugins:
   * BBB Testing Dolly
   * Classic Editor 1.6.7
   * Test Reports 1.2.0

 === Testing Instrutions
 1. Using the code provided below.
 2. ❓ If no key is provided, nothing is stored.

 === Actual Results
 1. ❌ Error condition occurs (reproduced).

 === Additional Notes
 - I'm not sure if the resolution #43559 has impacted this, but I cannot
 reproduce this anymore.
 - I've provided a simple example for adding new post meta, for key and
 value. Please don't hesitate to expand this if I'm missing something.

 === Supplemental Artifacts

 Sample code:

 {{{#!php
 <?php
 function custom_kv_meta_box() {
     add_meta_box(
         'custom_kv_meta',
         __('Custom Key-Value', 'textdomain'),
         'custom_kv_meta_callback',
         'post',
         'side',
         'default'
     );
 }
 add_action('add_meta_boxes', 'custom_kv_meta_box');

 function custom_kv_meta_callback($post) {
     wp_nonce_field('custom_kv_meta_nonce', 'custom_kv_meta_nonce');

     echo '<label for="custom_kv_key">' . __('Key:', 'textdomain') .
 '</label><br>';
     echo '<input type="text" id="custom_kv_key" name="custom_kv_key"
 value="" style="width:100%;"><br><br>';

     echo '<label for="custom_kv_value">' . __('Value:', 'textdomain') .
 '</label><br>';
     echo '<input type="text" id="custom_kv_value" name="custom_kv_value"
 value="" style="width:100%;">';
 }

 function custom_kv_save_meta($post_id) {
     if (!isset($_POST['custom_kv_meta_nonce']) ||
 !wp_verify_nonce($_POST['custom_kv_meta_nonce'], 'custom_kv_meta_nonce'))
 {
         return;
     }

     if (defined('DOING_AUTOSAVE') && DOING_AUTOSAVE) {
         return;
     }

     if (!current_user_can('edit_post', $post_id)) {
         return;
     }

     add_post_meta($post_id, $_POST['custom_kv_key'],
 $_POST['custom_kv_value']);
 }
 add_action('save_post', 'custom_kv_save_meta');
 }}}

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Ticket URL: <https://core.trac.wordpress.org/ticket/44530#comment:4>
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