问如何在发布帖子前检查条件(Wordpress - Hooks)
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Stack Overflow用户

提问于 2019-11-07 14:33:09

回答 2查看 529关注 0票数 0

我想在用户发帖之前检查一个条件。用户必须有一个jeton (用户元数据)，如果没有，帖子将不会被推送到数据库中，否则，它将有一个jeton将被烧毁。我要找的钩子或过滤器是什么？

/* Jeton is French for token or coin */

add_action('what_is_the_action_or_filter_im_looking_for', 'check_jeton_before_publish');

function check_jeton_before_publish($data) {

    $user_id = get_current_user_id(); // Get user ID
    $meta_jeton = get_user_meta($user_id, 'jeton'); // Jeton count

    if ($meta_jeton == 0 || empty($meta_jeton)) { // No jeton ? No post !

        return;

    } else { // Jeton ? Post, then burn one jeton

        $new_jeton_count = $meta_jeton - 1;
        update_user_meta($user_id, 'jeton', $new_jeton_count);
        return $data;
    }
}

感谢您的宝贵时间！

wordpress

回答 2

Stack Overflow用户

发布于 2019-11-08 04:56:56

根据wp_post_insert的说法，filter wp_insert_post_empty_content应该可以为您工作。

   /**
     * Filters whether the post should be considered "empty".
     *
     * The post is considered "empty" if both:
     * 1. The post type supports the title, editor, and excerpt fields
     * 2. The title, editor, and excerpt fields are all empty
     *
     * Returning a truthy value to the filter will effectively short-circuit
     * the new post being inserted, returning 0. If $wp_error is true, a WP_Error
     * will be returned instead.
     *
     * @since 3.3.0
     *
     * @param bool  $maybe_empty Whether the post should be considered "empty".
     * @param array $postarr     Array of post data.
     */
    if ( apply_filters( 'wp_insert_post_empty_content', $maybe_empty, $postarr ) ) {
        if ( $wp_error ) {
            return new WP_Error( 'empty_content', __( 'Content, title, and excerpt are empty.' ) );
        } else {
            return 0;
        }
    }

您可以在wp_insert_post_empty_content筛选器中执行条件，并返回true以停止插入帖子。

票数 1

Stack Overflow用户

发布于 2019-11-08 16:00:06

我认为@KGreene的答案值得一试，谢谢你的投入。

我改变了我的策略，如果用户没有jeton，我会重定向他们，这样他们甚至看不到编辑器，并在发布时在不同的钩子中烧掉jeton。

/*
*   Redirect user that doesnt have jeton, let others proceed
*   https://developer.wordpress.org/reference/hooks/save_post/
*/
function handle_before_publish_post($post_id, $post, $update) {

     // Only on post creation not update (they can update with 0 jeton)
    if ($update) {
        return;
    }

    $poster_id = $post->post_author;
    $meta_jeton = get_user_meta($poster_id, 'jeton')[0];

    if ($meta_jeton > 0) {
        return;
    } else {
        wp_redirect('[my-domain]/wp-admin/edit.php?post_type=[my-custom-post-type]');
    }
}
add_action('save_post_[my-custom-post-type]', 'handle_before_publish_post', 10, 3);

/*
*   Use a jeton on post creation
*   https://developer.wordpress.org/reference/hooks/new_status_post-post_type/
*/
function handle_after_publish_post($post_id, $post) {

    // Burn jeton
    $poster_id = $post->post_author;
    $meta_jeton = get_user_meta($poster_id, 'jeton')[0];
    $new_jeton_count = $meta_jeton - 1;

    update_user_meta($poster_id, 'jeton', $new_jeton_count);
    return;
}
add_action('publish_[my-custom-post-type]', 'handle_after_publish_post', 10, 3);