Meta Box

I checked again, yes it is working on first load and save on first page but as soon as I save another page it disappears

tabs-settings

Hello,

Placing the shortcode in Gutenberg for me is NOT working.

Not sure how you managed....

I had to change publisher-book to book publisher also.

Now I am confused.

publisher-book with to is not the same as book-publisher with from?

code that create the relationnship (sorry not sure if this is what you mean by get the code, I just extracted the php function from the relationship in metabox)

<div>
<?php
add_action( 'mb_relationships_init', 'your_prefix_function_name' );

function your_prefix_function_name() {
    MB_Relationships_API::register( [
        'id'         => 'publisher-book',
        'reciprocal' => true,
        'from'       => [
            'object_type' => 'post',
            'post_type'   => 'publisher',
            'meta_box'    => [
                'priority' => 'high',
                'style'    => 'seamless',
            ],
            'field'       => [
                'name' => 'Publisher',
            ],
        ],
        'to'         => [
            'object_type' => 'post',
            'post_type'   => 'book',
            'meta_box'    => [
                'priority' => 'high',
                'style'    => 'seamless',
            ],
            'field'       => [
                'name'       => 'Books',
                'add_button' => 'Add books',
            ],
        ],
    ] );
}
</div>

code that get the books

<div>

<div class="container3">

{% set relationship = attribute( relationships, 'publisher-book' ) %}
{% for post in relationship.to %}

<div class="container4">
    <a href="{{ post.url }}">
<img src="{{ post.thumbnail.medium.url }}" width="{{ post.thumbnail.medium.width }}" height="{{ post.thumbnail.medium.height }}" alt="{{ post.thumbnail.medium.alt }}" />
        <h4>{{ post.title }}</h4></a>

</div>

{% endfor %}

</div>

</div>

thank you.

I changed url to publisher-url in MySql, so the data are back into the post but still the above functions returns 0, what should b the function to return the url?