根据自定义字段设置 Wordpress 摘录和 post 缩略图

Question

如标题所述，我想根据 ACF 自定义字段自动 save/update post_excerpt 和 post_thumbnail 的值（主要是出于与其他插件的兼容性原因） .现在，在尝试完成此操作时，我遇到了 2 个问题，首先是以下函数：

function test_FeaturedImageSetByACF() {

    $current_screen         = get_current_screen(); // Current admin screen needed to identify the current cpt
    $current_cpt_name       = $current_screen->post_type; // Current cpt name
    $current_cpt_support    = 'thumbnail'; // We want to check if the CPT supports this feature

    $post_id                = get_the_ID(); // Current post ID
    $post_image_field       = get_field('post_head_img'); // ACF field we want to sync
    $post_image_id          = $post_image_field['id']; // ACF image filed ID
    $post_image_url         = $post_image_field['url']; // ACF image filed URL

    // If current cpt supports thumbnails/featured images

    if ( post_type_supports( $current_cpt_name, $current_cpt_support ) ) {

        if ( ( $post_image_url ) AND ( ( $post_image_url ) != ( get_the_post_thumbnail() ) ) ) {

            delete_post_thumbnail( $post_id );
            set_post_thumbnail( $post_id, $post_image_id );

        }

    }

}

add_action('save_post', 'test_FeaturedImageSetByACF', 13, 2 );
add_action('publish_post', 'test_FeaturedImageSetByACF', 10, 2 );

它确实有效，但有时它似乎只在我第二次保存时更新值（这意味着我必须保存两次）。我知道我使用了错误的钩子、错误的优先级或类似的东西，但我不知道是哪一个。

我的第二个问题是，我想为 post 摘录完成类似的事情。现在函数看起来很像以前的函数，但我不知道要更新哪个值。谁能指出我正确的方向？

提前致谢

Answer 1

您可以使用 acf/save_post 挂钩。传递对象 ID

add_action('acf/save_post', 'handle_acf', 20);
function handle_acf($object_id)
{
// Do your stuff
}

Answer 2

由于这更像是一个 ACF 特定问题而不是一个通用问题，我决定 post 在 ACF 的支持论坛上以及用户 John Huebner 为我指明了正确的方向。对于任何感兴趣的人，可以在 https://support.advancedcustomfields.com/forums/topic/set-wordpress-excerpt-and-post-thumbnail-based-on-custom-field/ 找到该主题，而（在 post 可能被删除或其他情况下）这是我用于摘录部分和自定义 post thumbnail/featured 图片：

add_action('save_post', 'flex_CustomExcerptSetByACF', 50);
function flex_CustomExcerptSetByACF() {

    global $post;

    $post_id        = ( $post->ID ); // Current post ID
    $post_excerpt   = get_field( 'post_excerpt', $post_id ); // ACF field

    if ( ( $post_id ) AND ( $post_excerpt ) ) {

        $post_array     = array(

            'ID'            => $post_id,
            'post_excerpt'  => $post_excerpt

        );

        remove_action('save_post', 'flex_CustomExcerptSetByACF', 50); // Unhook this function so it doesn't loop infinitely

        wp_update_post( $post_array );

        add_action( 'save_post', 'flex_CustomExcerptSetByACF', 50); // Re-hook this function

    }

}

add_action('save_post', 'flex_FeaturedImageSetByACF', 50);

function flex_FeaturedImageSetByACF() {

    $current_screen         = get_current_screen(); // Current admin screen needed to identify the current cpt
    $current_cpt_name       = $current_screen->post_type; // Current cpt name
    $current_cpt_support    = 'thumbnail'; // We want to check if the CPT supports this feature

    global $post;

    $post_id                = ( $post->ID ); // Current post ID
    $post_image_field       = get_field('post_head_img', $post_id ); // ACF field

    if ( ( $post_id ) AND ( $post_image_field ) ) {

        $post_image_id          = $post_image_field['id']; // ACF image filed ID
        $post_image_url         = $post_image_field['url']; // ACF image filed URL

        // If current cpt supports thumbnails/featured images

        if ( post_type_supports( $current_cpt_name, $current_cpt_support ) ) {

            if ( ( $post_image_url ) AND ( ( $post_image_url ) != ( get_the_post_thumbnail() ) ) ) {

                update_post_meta($post_id, '_thumbnail_id', $post_image_id);

            }

        }

    }

}

根据自定义字段设置 Wordpress 摘录和 post 缩略图

Set Wordpress excerpt and post thumbnail based on custom field

wordpress

advanced-custom-fields

custom-fields