connect woocommerce products to posts - wordpress

Question

I am using woocommerce on my wordpress site.
I am selling paintings. The products are paintings.
I have a list of artists as posts. Each artist is one post.
I would like to connect the posts and products so I can show the artist's name on the painting page and the user can click on the name and it takes them to the artist post.
How do I do this?

Answer 1

This is an example of how to add a custom field in WooCommerce product general tab. Since artists are posts ( category is not specified ), it will collect links for all posts and place them in a dropdown. The value of this field will be visible on the single product page below the price ( you can open the content-single-product.php file in WooCommerce theme, to see the actions for single product template, and functions attached, and change the priority of woocommerce_product_artist function if you want to change the place where the link will appear ).
<?php
add_action( 'admin_init', 'woocommerce_custom_admin_init' );
function woocommerce_custom_admin_init() {
// display fields
add_action( 'woocommerce_product_options_general_product_data', 'woocommerce_add_custom_general_fields' );
// save fields
add_action( 'woocommerce_process_product_meta', 'woocommerce_save_custom_general_fields' );
}
function woocommerce_add_custom_general_fields() {
// creating post array for the options ( id => title)
$posts = array( '' => __( 'Select Artist' ) );
array_walk( get_posts( array( 'numberposts' => -1 ) ), function( $item ) use ( &$posts ) {
$posts[ $item->ID ] = $item->post_title;
} );
// creating dropdown ( woocommerce will sanitize all values )
echo '<div class="options_group">';
woocommerce_wp_select(
array(
'id' => '_artist',
'label' => __( 'Artist' ),
'options' => $posts
)
);
echo '</div>';
}
function woocommerce_save_custom_general_fields( $post_id ) {
if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) return;
// validate id of artist page and save
if ( isset( $_POST['_artist'] ) ) {
$value = filter_input( INPUT_POST, '_artist', FILTER_VALIDATE_INT, array( 'options' => array( 'min_range' => 0 ) ) );
update_post_meta( $post_id, '_artist', $value );
}
}
add_action( 'init', 'woocommerce_custom_init' );
function woocommerce_custom_init() {
// hook the woocommerce_product_artist function on to woocommerce_single_product_summary action ( priority 15 )
add_action( 'woocommerce_single_product_summary', 'woocommerce_product_artist', 15 );
}
function woocommerce_product_artist() {
global $post;
// get the artist page id and show in template ( if exists )
$artist_id = get_post_meta( $post->ID, '_artist', true );
if ( $artist_id ) :
?>
<div class="product-artist"><?php echo get_the_title( $artist_id ); ?></div>
<?php endif;
}
?>