Simple Meta Description Plugin

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Ce plugin ajoute un champ, en bas de l’éditeur, vous permettant de renseigner la meta description de votre publication (post et page).

Contenu du plugin

<?php
/*
Plugin Name: Simple Meta Description Plugin
Description: Add a meta description field in gutenberg editor.
Version: 1.0
Author: Arnaud OGM
*/

// Add a custom meta description field
function mdp_add_meta_description_box() {
    add_meta_box(
        'mdp_meta_description',          // unique ID
        'Meta Description',              // Meta box title
        'mdp_meta_description_box_html', // Callback function
        ['post', 'page'],                // Type of publications
        'normal',                        // Context (normal, side, advanced)
        'high'                           // Priority
    );
}
add_action('add_meta_boxes', 'mdp_add_meta_description_box', 10, 2);

// Function to display the custom field in the editor
function mdp_meta_description_box_html($post) {
    $meta_description = get_post_meta($post->ID, '_mdp_meta_description', true);
    ?>
    <label for="mdp_meta_description">Meta Description:</label>
    <textarea id="mdp_meta_description" name="mdp_meta_description" rows="3" style="width:100%;"><?php echo esc_textarea($meta_description); ?></textarea>
    <?php
}

// Functipon to save the meta description
function mdp_save_meta_description($post_id) {
    if (array_key_exists('mdp_meta_description', $_POST)) {
        update_post_meta(
            $post_id,
            '_mdp_meta_description',
            sanitize_text_field($_POST['mdp_meta_description'])
        );
    }
}
add_action('save_post', 'mdp_save_meta_description');

// Function to add the meta description to the head section
function mdp_add_meta_description_to_head() {
    if (is_single() || is_page()) {
        global $post;
        $meta_description = get_post_meta($post->ID, '_mdp_meta_description', true);
        if ($meta_description) {
            echo '<meta name="description" content="' . esc_attr($meta_description) . '">' . "\n";
        }
    }
}
add_action('wp_head', 'mdp_add_meta_description_to_head');