How to set permalink to fetch all children custom posts with parent post in wordpress?

Question

I create parent-child relationship for custom posts types.

Generic : www.example.com/parent/parent_post

Sample : www.example.com/projects/project-one

In above URL parent is a custom post type and parent post is its single post. I can show parents all posts and single post respectively as archive-parent.php and single-parent.php .

As I mentioned earlier, I create parent-child relationship and with child post that stores 'post_parent' as parent id.

Generic : www.example.com/child/parent_post/child_post

Sample : www.example.com/project_article/project-one/first-article

And for specific child post, URL will be as above.

Below code is for to get specific child post.And it's working fine.

function my_add_rewrite_rules() {
    add_rewrite_tag('%child%', '([^/]+)', 'child=');
    add_permastruct('child', 'child/%parent%/%child%', false);
    add_rewrite_rule('^child/([^/]+)/([^/]+)/?','index.php?child=$matches[2]','top');
}
add_action( 'init', 'my_add_rewrite_rules' );

function my_permalinks($permalink, $post, $leavename) {
    $post_id = $post->ID;
    if($post->post_type != 'child' || empty($permalink) || in_array($post->post_status, array('draft', 'pending', 'auto-draft')))
        return $permalink;
    $parent = $post->post_parent;
    $parent_post = get_post( $parent );
    $permalink = str_replace('%parent%', $parent_post->post_name, $permalink);
    return $permalink;
}
add_filter('post_type_link', 'my_permalinks', 10, 3);

Generic : www.example.com/child/parent_post

Sample : www.example.com/project_article/project-one

Now I want all child posts with parent post, as in above URL.

I am new to word-press Please guide.

Little bit confused - are you having a single custom post type named child with parent-child hierarchy and you want to list all the child posts when accessed a parent page? — Outsource WordPress
yes you almost got my question @OutsourceWordPress i want all child post related to single parent and i am storing parent_post(id) in child post — hu7sy

Outsource WordPress Outsource WordPress · Accepted Answer · 2018-09-07T11:01:37

Assuming parent as parent custom post type, child as child custom post type and hope you need child posts URL like http://www.example.com/parent/parent-post/child/child-post instead of http://www.example.com/child/parent-post/child-post.

Change your my_add_rewrite_rules() function to the following.

function my_add_rewrite_rules() {
    add_rewrite_tag('%child%', '([^/]+)', 'child=');
    add_permastruct('child', '/parent/%parent%/child/%child%', false);
    add_rewrite_rule('^parent/([^/]+)/child/([^/]+)/?','index.php?child=$matches[2]','top');
}
add_action( 'init', 'my_add_rewrite_rules' );

After updating don't forgot to flush permalinks via 'Settings > Permalinks'.

How to set permalink to fetch all children custom posts with parent post in wordpress?

1 Answers