Save Post doesn’t output anything on page

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Below is the code am using to create custom metabox on WordPress, the Metabox shows fine but when I save the post it doesn’t dump the values into the page. It should dump the values from this function “product_meta_box_save“, which is telling WordPress to fire off on Page Save. 

<?php
// Little function to return a custom field value
function product_get_custom_field( $value ) {
    global $post;
}

// Register the Metabox
function product_add_custom_meta_box() {
    add_meta_box( 'about-products-', __( 'About the Product'), 'product_meta_box_output', 'products', 'normal', 'high' );
}
add_action( 'add_meta_boxes', 'product_add_custom_meta_box' );

// Output the Metabox
function product_meta_box_output( $post ){
?>
  <table width="100%">
    <tr>
      <td width="18%"><?php _e("Product Price (FJD)"); ?></td>
      <td width="82%"><input type="text" size="20" name="product_price"/></td>
    </tr>
    <tr>
      <td><?php _e("Product Stock"); ?></td>
      <td><input type="number" size="50" name="product_stock"/></td>
    </tr>
  </table>
<?php }

// Save the Metabox values
function product_meta_box_save( $post_id ) {
    global $post;
    var_dump( $post );
}
add_action( 'save_post', 'product_meta_box_save' );
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1 comment

  1. Yes as David said it uses ajax to save the post so it won’t ever show you that data.

    Instead you should do something like this with the save function:

    function product_meta_box_save( $post_id ) 
{
       if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE )  
       {
           return; //this prevents it from saving the values during its autosaves
       }

       if ( $_POST && isset($_POST['metabox_data'] ) ) 
       {
           update_post_meta($post_id, 'metabox_data', $_POST['metabox_data'] );
       }
}

    And this way the data will save and as David said you can dump it out then and do whatever you want with it.