John Davidson

Message:

I am trying to create a custom page in the administration panel to save some checkboxes somewhere in an array so that later I can show them in the wordpress theme. But the truth is I am limited, I do not know how to continue to save that information, nor do I know if it is better to use update_option () or update_post_meta () to save that configuration.
I have the following code in the theme's functions file:

function wpdocs_unsub_add_pages() {

     add_menu_page(

        __( 'Unsub List', 'textdomain' ),

        __( 'Unsub Emails','textdomain' ),

        'manage_options',

        'categoriasrelacionadas',

        'wpdocs_unsub_page_callback',

        ''

    );

}

 

/**

 * Display callback for the Unsub page.

 */

function wpdocs_unsub_page_callback() {

     echo 'Unsubscribe Email List';

?>

          

<form method="post" 

      action="<?php echo esc_html('?page=categoriasrelacionadas'); ?>">



    <?php $cat_argtos=array(

       'orderby' => 'name',

       'order' => 'ASC');



    $categorias=get_categories($cat_argtos);

    foreach($categorias as $categoria) {

        $args=array(

            'showposts' => -1,

             'category__in' => array($categoria->term_id),

             'caller_get_posts'=>1

        );

        $entradas=get_posts($args);

        if ($entradas) {

            echo '<p>' .$categoria->name.

            '<input type="checkbox" 

                    name="categorias" 

                    value="'.$categoria->term_id.'">  

             </p>';

        }

    }

    ?>

    <?php

        wp_nonce_field( 'acme-settings-save', 'acme-custom-message' );

        submit_button();

    ?>

</form>

<?php 

...

}

What else could I do to save the information and show the selected boxes?

---

My Answer:
To save the checkbox information in an array and later display it in the WordPress theme, you can use the `update_option()` function to save the configuration. Here's an example of how you can modify your code to save the checkbox information:

php
function wpdocs_unsub_add_pages() {
add_menu_page(
__( 'Unsub List', 'textdomain' ),
__( 'Unsub Emails', 'textdomain' ),
'manage_options',
'categoriasrelacionadas',
'wpdocs_unsub_page_callback',
''
);
}

function wpdocs_unsub_page_callback() {
if (isset($_POST['checkbox_value'])) {
$checkbox_value = $_POST['checkbox_value'];
update_option('checkbox_option', $checkbox_value);
}

$saved_checkbox_value = get_option('checkbox_option');

echo '

';
echo '';
echo '';
echo '

';
}


In this code snippet, we added a form in the `wpdocs_unsub_page_callback()` function to display a checkbox. When the form is submitted, the checkbox value is saved using the `update_option()` function. Later, you can retrieve the saved checkbox value using the `get_option()` function.

Make sure to replace `'checkbox_option'` with a unique option name for your checkbox configuration. You can then use the saved checkbox value in your theme to display the checkboxes as needed.