After we save a post/page, a new menu item is created (with the same title) in the navigation that we have created in nav-menus.php.
If we need to change the menu item title, we need to go to nav-menus.php and change it to something else.
Is it possible to have some text field, for example in the edit post/page, where we can write the menu item title that we want for this page/post without needing to edit nav-menus.php each time?
This can really save a lot of time for users.
Here is the full and working code! Thanks to @Howdy_McGee
/**
* Adds a box to the main column on the Page edit screens.
*/
function menu_item_title_changer_add_meta_box() {
$screens = array( 'page' );
foreach ( $screens as $screen ) {
add_meta_box(
'menu_item_title_changer',
__( 'Menu item title changer', 'webic-admin' ),
'menu_item_title_changer_callback',
$screen
);
}
}
add_action( 'add_meta_boxes', 'menu_item_title_changer_add_meta_box' );
/**
* Prints the box content.
*
* @param WP_Post $post The object for the current post/page.
*/
function menu_item_title_changer_callback( $post ) {
// Add a nonce field so we can check for it later.
wp_nonce_field( 'menu_item_title_changer_meta_box', 'menu_item_title_changer_meta_box_nonce' );
/*
* Use get_post_meta() to retrieve an existing value
* from the database and use the value for the form.
*/
$value = get_post_meta( $post->ID, '_menu_item_title_changer', true );
echo '<label for="menu_item_title_changer_field">';
_e( 'Description for this field', 'myplugin_textdomain' );
echo '</label> ';
echo '<input type="text" id="menu_item_title_changer_field" name="menu_item_title_changer_field" value="' . esc_attr( $value ) . '" size="25" />';
}
/**
* When the post is saved, saves our custom data.
*
* @param int $post_id The ID of the post being saved.
*/
function menu_item_title_changer_save_meta_box_data( $post_id, $post ) {
/*
* We need to verify this came from our screen and with proper authorization,
* because the save_post action can be triggered at other times.
*/
// Check if our nonce is set.
if ( ! isset( $_POST['menu_item_title_changer_meta_box_nonce'] ) ) {
return;
}
// Verify that the nonce is valid.
if ( ! wp_verify_nonce( $_POST['menu_item_title_changer_meta_box_nonce'], 'menu_item_title_changer_meta_box' ) ) {
return;
}
// If this is an autosave, our form has not been submitted, so we don't want to do anything.
if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) {
return;
}
// Check the user's permissions.
if ( isset( $_POST['post_type'] ) && 'page' == $_POST['post_type'] ) {
if ( ! current_user_can( 'edit_page', $post_id ) ) {
return;
}
} else {
if ( ! current_user_can( 'edit_post', $post_id ) ) {
return;
}
}
/* OK, it's safe for us to save the data now. */
// Make sure that it is set.
if ( ! isset( $_POST['menu_item_title_changer_field'] ) ) {
return;
}
// here is the code here it is working bug my system stack after i click save "save"
if( 'page' == $post->post_type ) {
// Check Nonces
$nav_item = new WP_Query( array(
'post_type' => 'nav_menu_item', // Nav Post Type
'posts_per_page' => 1, // We only expect 1 result, if any
'meta_key' => '_menu_item_object_id', // With our Meta Key
'meta_value' => $post->ID // And our Correct Page
) );
if( $nav_item->have_posts() ) { // Ensure something was found
wp_update_post( array( // Update the `nav_menu_item` Post Title
'ID' => $nav_item->posts[0]->ID,
'post_title' => htmlspecialchars( sanitize_text_field( $_POST['menu_item_title_changer_field'] ) )
) );
}
// Update Page Meta
}
// Sanitize user input.
$my_data = sanitize_text_field( $_POST['menu_item_title_changer_field'] );
// Update the meta field in the database.
update_post_meta( $post_id, '_menu_item_title_changer', $my_data );
}
add_action( 'save_post', 'menu_item_title_changer_save_meta_box_data', 10, 3 );
1 Answer
Whenever you add a new item to WordPress Menu ( Appearance -> Menu ) it creates a new Post of Post Type nav_menu_item and gets assigned a post meta called _menu_item_object_id with the main Post ID.
For example, if I create a page called “Home” it gets assigned a Post ID of 2. Now, when I go to Menus and add the page to a menu, WordPress creates a new post of post type nav_menu_item, assigns the title to “Home”, gives it a ID in the database of 3 and assigns post meta _menu_item_object_id = 2. If we want to change the title to “Homepage” in Menus, it would change the Post ID 3 to title “Homepage”.
If we wanted to change the title via metabox we would need to find Post Type nav_menu_item that has post_meta _menu_item_object_id with the same ID as our current page. I’m assuming you already have a metabox setup, are checking post types, and nonces.
if( 'page' == $post->post_type ) {
// Check Nonces
$nav_item = new WP_Query( array(
'post_type' => 'nav_menu_item', // Nav Post Type
'posts_per_page' => 1, // We only expect 1 result, if any
'meta_key' => '_menu_item_object_id', // With our Meta Key
'meta_value' => $post->ID // And our Correct Page
) );
if( $nav_item->have_posts() ) { // Ensure something was found
wp_update_post( array( // Update the `nav_menu_item` Post Title
'ID' => $nav_item->posts[0]->ID,
'post_title' => htmlspecialchars( sanitize_text_field( $_POST['_textbox_name'] ) )
) );
}
// Update Page Meta
}
At the end of the above code, you would also want to update the Pages post meta to the new title so you can re-display it in the metabox textbox which makes it easier for the user to update in the future.
Alternatively, if you want to update the metabox textbox whenever a user adds a new Item to the Menu you can reverse the process:
if( 'nav_menu_item' == $post->post_type ) {
// Check Nonces
$added_id = get_post_meta( $post->ID, '_menu_item_object_id', true ); // This may or may not be a Page ID
$type = get_post_field( 'post_type', $added_id );
if( 'page' == $type ) {
// Update Page Metabox Textbox Here with `$post->post_title`
}
}
