在Wordpress自定义帖子类型上具有动态重写标签的自定义永久链接

时间:2018-07-06 20:43:03

标签: wordpress permalinks

我有一个名为openssl s_client ...的自定义帖子类型,并且我试图将此类型的帖子设置为现有页面的子级,以实现这样的永久链接结构:

location

我最需要在两种不同的帖子类型之间创建层次关系的地方是通过一个meta框,在保存该帖子时,我可以为其指定ID作为自定义类型帖子的example.com/alabama <-- Page with generic content example.com/alabama/locations <-- Another page, child of a state page example.com/alabama/locations/location-name <- Custom type, child of alabama/locations seen above and titled `Location Name` 。但是,尽管确实将页面ID保存到了CPT post_parent字段中,但它对永久链接没有影响。它们是按照post_parent CPT选项中的定义来的。但是我不知道如何使rewrite选项动态化,或者甚至不可能实现。

这是我的帖子类型的定义方式:

['rewrite']['slug']

如何为位置配置重写规则以获取所需的永久链接?

1 个答案:

答案 0 :(得分:3)

我假设所有location帖子都将具有如下所示的永久链接结构:

example.com/{STATE NAME}/locations/{CPT SLUG}

示例网址:

http://example.com/alabama/locations/location-1
http://example.com/alabama/locations/location-2
http://example.com/new-york/locations/location-3

因此,如果正确,则:

•使用add_rewrite_rule()函数为这些永久链接添加自定义重写规则。

•您不需要/locations/页面。

add_action( 'init', function(){
    // Handles requests to `your-site-domain.com/{STATE NAME}/locations/{CPT SLUG}`
    add_rewrite_rule(
        '([^/]+)/locations/([^/]+)(?:/([0-9]+))?/?$',
        'index.php?location=$matches[2]&page=$matches[3]&state_name=$matches[1]',
        'top'
    );

    // Allows you to retrieve the `state_name`; for example using `get_query_var()`.
    add_rewrite_tag( '%state_name%', '([\w\-]+)' );
} );

(您可以将state_name更改为另一个名称;它由您决定。并且不要忘记刷新重写规则-转到“永久链接设置”页面,然后单击“保存更改”按钮,而无需进行任何更改。)


接下来,当您创建或编辑location帖子时,请将post_parent自定义字段的值设置为“状态页”的 ID -例如/alabama/页面。

此代码将过滤get_permalink()的输出,并为location帖子返回适当的永久链接:

add_filter( 'post_type_link', 'so51217355_post_type_link', 10, 2 );
function so51217355_post_type_link( $permalink, $post ) {
    if ( 'location' === $post->post_type ) {
        $page_id = get_post_meta( $post->ID, 'post_parent', true );

        $state_name = ( is_numeric( $page_id ) && $page_id ) ?
            get_post_field( 'post_name', $page_id ) : null;

        // Make sure the post is associated to a valid 'state Page'.
        if ( $state_name ) {
            $permalink = $state_name . '/locations/' . $post->post_name;
            $permalink = home_url( user_trailingslashit( $permalink ) );
        }
    }

    return $permalink;
}

因此,例如,如果get_permalink( 123 )帖子的子句是http://example.com/alabama/locations/location-1,并且其“状态页”是location,则location-1将返回/alabama/。 / p>


更新

当请求永久链接时(即用户访问example.com/{STATE NAME}/locations/{CPT SLUG}),并且要确保同时存在“状态页”和location的帖子,实际上,“状态页”确实与location帖子相关联,那么这段代码可以为您提供帮助:

// Validates the `state_name` of the current page/URL.
add_action( 'parse_request', 'so51217355_parse_request' );
function so51217355_parse_request( $wp ) {
    if ( ! empty( $wp->query_vars['state_name'] ) &&
        ! empty( $wp->query_vars['location'] ) ) {
        global $wpdb;

        $page_id = $wpdb->get_var( $wpdb->prepare(
            "SELECT ID FROM {$wpdb->posts} WHERE post_name = %s",
            $wp->query_vars['state_name']
        ) );

        if ( ! is_numeric( $page_id ) || ! $page_id ) {
            $wp->query_vars['error'] = '404';

            // Don't let WordPress finds a post with nearest match.
            remove_action( 'template_redirect', 'redirect_canonical' );

            return;
        }

        $post_id = $wpdb->get_var( $wpdb->prepare(
            "SELECT ID FROM {$wpdb->posts} WHERE post_name = %s",
            $wp->query_vars['location']
        ) );

        $page_id2 = get_post_meta( $post_id, 'post_parent', true );
        if ( (int) $page_id2 !== (int) $page_id ) {
            $wp->query_vars['error'] = '404';

            // Don't let WordPress finds a post with nearest match.
            remove_action( 'template_redirect', 'redirect_canonical' );
        }
    }
}

更新#2

请参考此图片下方代码中的// Comment-请参见_so51217355_admin_ajax_js()函数。

enter image description here

add_action( 'wp_ajax_so51217355_admin_ajax', '_so51217355_admin_ajax_php' );
function _so51217355_admin_ajax_php() {
    $post_id = filter_input( INPUT_POST, 'post_id' );
    echo get_sample_permalink_html( $post_id );
    wp_die();
}

add_action( 'admin_print_footer_scripts', '_so51217355_admin_ajax_js', 11 );
function _so51217355_admin_ajax_js() {
    $screen = get_current_screen();
    if ( 'location' === $screen->id ) :
    ?>
<script>
// This script will sync the Permalink under the big/main post title box on
// the Edit Post page; but only if and when editing or deleting the custom
// field as in `meta_key` below. Make sure to change it, if necessary.
jQuery( function( $ ){
    var meta_key = 'post_parent';

    function ajax() {
        $.post( ajaxurl, {
            action: 'so51217355_admin_ajax',
            post_id: $( '#post_ID' ).val()
        }, function( s ){
            $( '#edit-slug-box' ).html( s );
        } );
    }

    function _go( e, a ) {
        var $input = $( a.target ),
            mid, mkey;

        if ( /^meta\-(\d+)\-submit$/.test( $input.attr( 'name' ) ) ||
            /^deletemeta\[(\d+)\]$/.test( $input.attr( 'name' ) ) ) {
            mid = RegExp.$1;
            mkey = $( 'input[name="meta[' + mid + '][key]"]' ).val();

            if ( meta_key === mkey ) {
                ajax();
            }
        }
    }

    $( '#the-list' )
        .on( 'wpListAddEnd', _go )
        .on( 'wpListDelEnd', _go );
} );
</script>
    <?php
    endif;
}