phpwordpresswoocommercecategoriesproduct

Adding a custom field external link to archives category pages

I have a woocommerce web site. First I would like to add a custom field on admin product pages to set an exernal url that I will use on my Archives category product pages.

Also I would like ideally to have this custom field on my admin product pages settings metabox. But the code I have change the link on all archives pages.

For now I have this code that is not doing what I need:

remove_action( 'woocommerce_before_shop_loop_item', 'woocommerce_template_loop_product_link_open', 10 );
add_action( 'woocommerce_before_shop_loop_item', 'mycode_woocommerce_template_loop_product_link_open', 20 );
function mycode_woocommerce_template_loop_product_link_open() {

    $url = 'https://www.some_domain.com/';

    echo '<a href="' . $url . '">';

}

How can I do to make it work on category archives pages only?

Thanks

Solution

  • Step1 - Creation of a custom field in the admin product pages setting metabox:

    enter image description here

    // Inserting a Custom Admin Field
add_action( 'woocommerce_product_options_general_product_data', 'add_custom_text_field_create' );
function add_custom_text_field_create() {
    echo '<div class="options_group">';

    woocommerce_wp_text_input( array(
        'type'              => 'text',
        'id'                => 'extern_link',
        'label'             => __( 'External Link', 'woocommerce' ),
        'placeholder'       => 'https://',
        'description'       => __( 'Input the external link in this field', 'woocommerce' ),
        'desc_tip'    => 'true',
        'data_type'         => 'url', // Add the correct data type
    ) );

    echo '</div>';
}

// Saving the field value when submitted
add_action( 'woocommerce_admin_process_product_object', 'add_custom_field_text_save' );
function add_custom_field_text_save( $product ){
$wc_field = $_POST['extern_link'];
if( isset( $_POST['extern_link'] ) )
    $product->update_meta_data( 'extern_link', sanitize_url( $wc_field ) );
}

    Step 2 - Replacing the link by a custom meta value in product category archives pages only.

    remove_action( 'woocommerce_before_shop_loop_item', 'woocommerce_template_loop_product_link_open');
add_action( 'woocommerce_before_shop_loop_item', 'custom_wc_template_loop_product_link_open', 10 );
function custom_wc_template_loop_product_link_open() {
    // For product category archives pages only.
    if (is_product_category()) {
        // You get here your custom link
        $link = get_post_meta(get_the_ID(), 'extern_link', true);
        echo '<a href="' . $link . '" class="woocommerce-LoopProduct-link">';
    //For the other woocommerce archives pages
    } else {
        echo '<a href="' . get_the_permalink() . '" class="woocommerce-LoopProduct-link">';
    }
}

    The Code goes in functions.php file of your child theme (or in a plugin file)