如何让 woocommerce 将产品标题设置为产品图片的标题和 alt？

Question

在做了一些研究后，我发现图片标题和 alt 对 SEO 很重要，更改每个图片标题和 alt 需要很长时间。

我在这里找到了这段代码，但它不会影响当前的图像。

add_filter('wp_get_attachment_image_attributes', 'change_attachement_image_attributes', 20, 2);

function change_attachement_image_attributes( $attr, $attachment ){
    // Get post parent
    $parent = get_post_field( 'post_parent', $attachment);

    // Get post type to check if it's product
    $type = get_post_field( 'post_type', $parent);
    if( $type != 'product' ){
        return $attr;
    }

    /// Get title
    $title = get_post_field( 'post_title', $parent);

    $attr['alt'] = $title;
    $attr['title'] = $title;

    return $attr;
}

Answer 1

您可以尝试woocommerce_gallery_image_html_attachment_image_params 过滤器进行自定义。检查以下示例。它获取产品标题并将其分配给图像的alt 和title 属性。注意：这只适用于产品单页。

add_filter( 'woocommerce_gallery_image_html_attachment_image_params','wpso_customize_single_product_image' );

function wpso_customize_single_product_image( $details ) {
    global $product;
    $details['alt'] = $details['title'] = get_the_title( $product->get_id() );
    return $details;
}

Answer 2

登录到您的 Phpmyadmin，选择您的数据库并运行此查询以更新图像标题：

UPDATE wp_posts as a
LEFT JOIN wp_postmeta as b ON a.ID = b.meta_value
LEFT JOIN wp_posts as c ON b.post_id = c.ID
SET a.post_title = c.post_title
WHERE a.post_type = 'attachment'
AND a.post_mime_type = 'image/jpeg'
AND b.meta_key = '_thumbnail_id'
AND c.post_type = 'product'

...以及用于更新图像 alts 的 SQL 查询：

UPDATE wp_postmeta as z 
LEFT JOIN wp_posts as a ON z.post_id = a.ID 
LEFT JOIN wp_postmeta as b ON a.ID = b.meta_value 
LEFT JOIN wp_posts as c ON b.post_id = c.ID 
SET z.meta_value = c.post_title 
WHERE z.meta_key = '_wp_attachment_image_alt' 
AND a.post_type = 'attachment' 
AND a.post_mime_type = 'image/jpeg' 
AND b.meta_key = '_thumbnail_id' 
AND c.post_type = 'product'