Add a custom meta field value after the price on single products pages

问题

I have created a custom Metabox named "Info" on my product pages.
I would like to show the corresponding meta field value in the template content-single-product.php behind the product price. But it doesn't output the corresponding meta field value and this is not working.

My problem is that I don't know how I can call the corresponding meta field value. Is it in function.php php file or in content-single-product.php template.

This is the code that I use to create the Metabox (and it works):

// Create metabox
<?php
function meta_box1()
{
  add_meta_box('new_meta', 'info','new_meta_output','product');
}
add_action ('add_meta_boxes','meta_box1');


function new_meta_output($post)
{
  $new_meta = get_post_meta($post->ID,'_new_meta',true);
  echo ('<label for="new_meta"> info meta box</label>');
  echo ('<input type="text" id="new_meta" name="new_meta" value="'.esc_attr($new_meta).'"/>');
}

function new_meta_save($post_id)
{
  $new_meta=sanitize_text_field($_POST['new_meta']);
  update_post_meta ($post_id,'_new_meta',$new_meta);
}
add_action('save_post','webtot_new_meta_save');

?>

This code is in function.php file of my theme folder is not working:

// add metabox to behind price product

function meta_product() {
    // don't show in product --problem
    $new_meta2 = get_post_meta($post->ID,'_new_meta',true);
    echo $new_meta2;

    // show in product
    echo "123456";
}
add_action('woocommerce_single_product_summary', 'meta_product',25);

What I am doing wrong and how can I make it work?

Thanks.

回答1:

UPDATE

1) You are NOT getting the Product ID in your last function. For that you need to use WordPress get_the_ID() and the the data value will be outputted as desired.
2) Your function new_meta_save() has not the same name that in the corresponding add_action (hook).
3) All your code goes on function.php file located in your active theme.

Here is your revisited functional code:

// Creating a custom metabow in Admin Individual product pages
add_action ('add_meta_boxes','add_info_meta_box');
function add_info_meta_box()
{
    add_meta_box('new_meta', 'info','info_meta_fields_output','product', 'side');
}


function info_meta_fields_output($post)
{
    $new_meta = get_post_meta($post->ID,'_new_meta',true);
    echo ('<label for="new_meta"> info meta box</label>');
    echo ('<input type="text" id="new_meta" name="new_meta" value="'.esc_attr($new_meta).'"/>');
}

add_action('save_post','save_info_meta_box');
function save_info_meta_box($post_id)
{
    $new_meta=sanitize_text_field($_POST['new_meta']);
    update_post_meta ($post_id,'_new_meta',$new_meta);
}


// Displaying the value on single product pages
function meta_product($product_id) {

    $new_meta2 = get_post_meta(get_the_ID(),'_new_meta', true);
    echo $new_meta2;
}
add_action('woocommerce_single_product_summary', 'meta_product',15);

ALL the code goes in function.php file of your active child theme (or theme or in any plugin file).

This code is tested and works

---

To show this meta field value after the price you need a priority between 10 and 20, (but if you want to show it before the price, after the title, the priority is going to be between 5 and 10.

On the concerned template for woocommerce_single_product_summary you have:

    <?php
        /**
         * woocommerce_single_product_summary hook.
         *
         * @hooked woocommerce_template_single_title - 5
         * @hooked woocommerce_template_single_rating - 10
         * @hooked woocommerce_template_single_price - 10
         * @hooked woocommerce_template_single_excerpt - 20
         * @hooked woocommerce_template_single_add_to_cart - 30
         * @hooked woocommerce_template_single_meta - 40
         * @hooked woocommerce_template_single_sharing - 50
         */
        do_action( 'woocommerce_single_product_summary' );
    ?>

来源：https://stackoverflow.com/questions/39842989/add-a-custom-meta-field-value-after-the-price-on-single-products-pages