Set a Default Stock Quantity for WooCommerce Products February 17 2013

Here’s a quick little snippet that you can make use of if you want to set a default stock quantity for any newly added WooCommerce product Variations. This can be useful when bulk-adding variations and you don’t want an initial quantity of ”.

add_action( 'admin_enqueue_scripts', 'wc_default_variation_stock_quantity' );

function wc_default_variation_stock_quantity() {
  global $pagenow, $woocommerce;

  $default_stock_quantity = 0;
  $screen = get_current_screen();

  if ( ( $pagenow == 'post-new.php' || $pagenow == 'post.php' || $pagenow == 'edit.php' ) && $screen->post_type == 'product' ) {

    ob_start();
    ?>
    $('.woocommerce_variations').bind('woocommerce_variations_added',function() {
      $('.woocommerce_variations input').each(function(index,el) {
        el = $(el);
        if(el.attr('name') && el.attr('name').substr(0,14) == 'variable_stock' && el.val() == '') {
          el.val(<?php echo $default_stock_quantity; ?>);
        }
      });
    });
    <?php
    $javascript = ob_get_clean();
    $woocommerce->add_inline_js( $javascript );
  }
}

Or, if you need a default stock quantity for simple products:

add_action( 'admin_enqueue_scripts', 'wc_default_variation_stock_quantity' );

function wc_default_variation_stock_quantity() {
  global $pagenow, $woocommerce;

  $default_stock_quantity = 0;
  $screen = get_current_screen();

  if ( ( $pagenow == 'post-new.php' || $pagenow == 'post.php' || $pagenow == 'edit.php' ) && $screen->post_type == 'product' ) {

    ob_start();
    ?>
    if ( '' === $( '#_stock' ).val() ) {
      $( '#_stock' ).val(<?php echo $default_stock_quantity; ?>);
    }
    <?php
    $javascript = ob_get_clean();
    $woocommerce->add_inline_js( $javascript );
  }
}

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