I have created a wp_dropdown_pages based upon the WordPress codex page

global $post;
$args = array(
        'date_format'  => get_option('date_format'),
        'depth'        => 0,
        'echo'         => 1,
        'post_type'    => 'page',
        'post_status'  => 'publish',
        'sort_column'  => 'menu_order, post_title',
        'sort_order'   => 'ASC',
        'value_field'  => 'post_title');
wp_dropdown_pages($args);

This displays the dropdown with all of it's pages.

I have two problems.
The main problem is that I don't know how to save this to the database.
I'm used to do it like this:

update_post_meta($post->ID, 'url', $_POST['url']);

But that doesn't work.

The second problem I have is that I want to have the option selected that is saved in the database. So if a page is saved it should tell me which page is saved.

Hope anyone can enlighten me. Please share how this works and not only a solution so I can understand.... :-)

M.

I have created a wp_dropdown_pages based upon the WordPress codex page

global $post;
$args = array(
        'date_format'  => get_option('date_format'),
        'depth'        => 0,
        'echo'         => 1,
        'post_type'    => 'page',
        'post_status'  => 'publish',
        'sort_column'  => 'menu_order, post_title',
        'sort_order'   => 'ASC',
        'value_field'  => 'post_title');
wp_dropdown_pages($args);

This displays the dropdown with all of it's pages.

I have two problems.
The main problem is that I don't know how to save this to the database.
I'm used to do it like this:

update_post_meta($post->ID, 'url', $_POST['url']);

But that doesn't work.

The second problem I have is that I want to have the option selected that is saved in the database. So if a page is saved it should tell me which page is saved.

Hope anyone can enlighten me. Please share how this works and not only a solution so I can understand.... :-)

M.

• php
• dropdown
• post-meta

1 Answer 1

For the second part of your question: in your args variable, you can set the selected argument to whatever is saved in your database. See the codex for more details here.

I'm currently working on the same issue, I'll update and clarify once I figure everything out out.

EDIT : Okay! I DID IT.

Here's my save function:

function my_custom_meta_save( $post_id ) {

// Checks save status
$is_autosave = wp_is_post_autosave( $post_id );
$is_revision = wp_is_post_revision( $post_id );
$is_valid_nonce = ( isset( $_POST[ 'my_custom_nonce' ] ) && wp_verify_nonce( $_POST[ 'my_custom_nonce' ], basename( __FILE__ ) ) ) ? 'true' : 'false';

// Exits script depending on save status
if ($is_autosave || $is_revision || !$is_valid_nonce ) {
    return;
}


// Checks for input and sanitizes/saves if needed
if ( isset( $_POST[ 'meta_key' ] ) ) {
    update_post_meta( $post_id, 'meta_key', $_POST[ 'meta_key' ] );
}

}
add_action( 'save_post', 'my_custom_meta_save' )

Annnnd here's my callback function:

function my_custom_meta_callback() {
// Get the stored value from the database
global $post;
$meta = get_post_meta( $post->ID, 'sos_internal_gallery', true);

// TO DO: Exclude galleries that are already being displayed elsewhere
$args = array(
    'echo'                  => true,
    'name'                  => 'sos_internal_gallery',
    'id'                    => 'sos_internal_gallery',
    'show_option_none'      => 'Select a slider',
    'post_type'             => 'sosslider',
    'sort_column'           => 'post_title',
    'selected'              => $meta
);

// Create drop down that lists all published sliders
wp_dropdown_pages( $args );
}

Hope this helps! It only took me all day to figure out.