Массовое добавление картинок по атрибуту

added-function.php

add_action( 'woocommerce_variable_product_bulk_edit_actions', 'set_image_by_attributes', 10 );

function set_image_by_attributes() {

	global $post, $woocommerce;

	$attributes = maybe_unserialize( get_post_meta( $post->ID, '_product_attributes', true ) );

	$out = "";

	foreach( $attributes as $attribute ) {

		if ($attribute['is_variation'] ) {

			$out .= '<optgroup label="Изображение по aтрибуту «' . wc_attribute_label($attribute['name']) . '»">';

			foreach( wc_get_product_terms( $post->ID, $attribute['name'] ) as $term ){
				if (false !== $term){

					//$term = get_term_by('name', $attribute_value, $attribute['name']);
					$out .= '<option value="set_image_attribute" data-attribute-name="' . $attribute['name'] . '" data-attribute-value="' . $term->slug . '">' . $term->name. '</option>';
				}

			}

			$out .= '</optgroup>';
		}
	}
	?>
	<script>
		 jQuery( '.wc-metaboxes-wrapper' ).on( 'click', 'a.bulk_edit', function( event ) {
			 var field_to_edit = jQuery( 'select#field_to_edit' ).val();

			 if ( field_to_edit == 'set_image_attribute' ) {
				 var input_tag = jQuery( 'select#field_to_edit :selected' ).attr( 'rel' ) ? jQuery( 'select#field_to_edit :selected' ).attr( 'rel' ) : 'input';

				 var mediaUploader,
				     data = {};

				 data.attribute_name = jQuery( 'select#field_to_edit :selected' ).data( 'attribute-name' );
				 data.attribute_value = jQuery( 'select#field_to_edit :selected' ).data( 'attribute-value' );

				 if ( mediaUploader ) {
					 mediaUploader.open();
					 return;
				 }

				 mediaUploader = wp.media.frames.file_frame = wp.media( {
					 title: 'Выберите изображение',
					 button: {
						 text: 'Задать изображение для вариаций с выбранным атрибутом'
					 },
					 multiple: false
				 } );

				 mediaUploader.on( 'select', function() {
					 var attachment = mediaUploader.state().get( 'selection' ).first().toJSON();
					 data.attachment_id = attachment.id;
					 jQuery( '#woocommerce-product-data' ).block( {
						 message: null,
						 overlayCSS: {
							 background: '#fff',
							 opacity: 0.6
						 }
					 } );

					 jQuery.ajax( {
						 url: woocommerce_admin_meta_boxes_variations.ajax_url,
						 data: {
							 action: 'woocommerce_bulk_edit_variations',
							 security: woocommerce_admin_meta_boxes_variations.bulk_edit_variations_nonce,
							 product_id: <?php echo $post->ID; ?>,
							 product_type: jQuery( '#product-type' ).val(),
							 bulk_action: field_to_edit,
							 data: data
						 },
						 type: 'POST',
						 success: function( data ) {
							 jQuery( '.variations-pagenav .page-selector' ).val( 1 ).first().change();
						 }
					 } );

					 jQuery( '#woocommerce-product-data' ).unblock();

				 } );

				 mediaUploader.open();

				 return false;
			 }
		 } );

	</script>
	<?php

	echo $out;

}

add_action( 'woocommerce_bulk_edit_variations_default', 'action_woocommerce_bulk_edit_variations_default', 10, 4 );

function action_woocommerce_bulk_edit_variations_default( $bulk_action, $data, $product_id, $variations ) {

	if ( $bulk_action == 'set_image_attribute' ) {

		foreach ( $variations as $variation ) {
			$attribute_name = "attribute_" . $data["attribute_name"];
			$meta           = get_post_meta( $variation );

			if ( $meta[ $attribute_name ][0] === $data["attribute_value"] ) {
				set_post_thumbnail( $variation, $data["attachment_id"] );
			}
		}
	}

	exit;
}