-Parent-category
    -Sub-category

Want to get parent ID when on the current post of sub-category. Created a custom post type and custom taxonomies for that post type. Created a category and assigned another category to have the first category as a parent. I'm listing all posts of that parent category on the parent category page when a particular post is clicked it opens the single-custom_post_type.php and want to get the parent category ID on the single-custom_post_type.php so I can add a sidebar with all the sibling's post with the same parent category.

Any help?

$args_docs   =   array(
    'post_type'         =>  Documents::DOCUMENTS_TYPE_KEY,
    'posts_per_page'    =>  -1,
    'tax_query' => array(
        array(
            'taxonomy'  =>  DocumentsTaxonomy::DOCUMENTS_TAXONOMY_KEY,
            'field'     =>  'term_id',
            'terms'     =>  9, // <- I want here to add the parent category ID dynamically,so whenever we are currently on a post it gives that posts parent category ID
        ),
    ),
);

-Parent-category
    -Sub-category

Want to get parent ID when on the current post of sub-category. Created a custom post type and custom taxonomies for that post type. Created a category and assigned another category to have the first category as a parent. I'm listing all posts of that parent category on the parent category page when a particular post is clicked it opens the single-custom_post_type.php and want to get the parent category ID on the single-custom_post_type.php so I can add a sidebar with all the sibling's post with the same parent category.

Any help?

$args_docs   =   array(
    'post_type'         =>  Documents::DOCUMENTS_TYPE_KEY,
    'posts_per_page'    =>  -1,
    'tax_query' => array(
        array(
            'taxonomy'  =>  DocumentsTaxonomy::DOCUMENTS_TAXONOMY_KEY,
            'field'     =>  'term_id',
            'terms'     =>  9, // <- I want here to add the parent category ID dynamically,so whenever we are currently on a post it gives that posts parent category ID
        ),
    ),
);

• custom-post-types
• custom-taxonomy

Share Improve this question edited Apr 17, 2019 at 12:27 Gufran Hasan 69188 silver badges2020 bronze badges asked Apr 17, 2019 at 12:05 TestimiUEBTestimiUEB 1511 gold badge22 silver badges88 bronze badges

Add a comment  | 

1 Answer 1

Sorted by: Reset to default 1

Get Object Terms : Retrieves an array of WP_Term object associated with the given post, in the supplied taxonomies.

Term object ( WP_Term )offers some handy information. For example,

Gives you term slug: e.g.: term-slug-example

$slug = $term->slug;

Gives you term name: e.g. Term Name Example

$name = $term->name;

Gives you term description: e.g. This is my new cool custom term.

$desc = $term->description;

But unfortunately lacks a link value. So use Get Term Link to generate a permalink for a taxonomy term archive.

$term_link = get_term_link( $term);

So your finalcode should look like this:

$sub_cats = wp_get_object_terms( $post->ID, DocumentsTaxonomy::DOCUMENTS_TAXONOMY_KEY, ); // array of categories associated with current post


$args_docs   =   array(
    'post_type'         =>  Documents::DOCUMENTS_TYPE_KEY,
    'posts_per_page'    =>  -1,
    'tax_query' => array(
        array(
            'taxonomy'  =>  DocumentsTaxonomy::DOCUMENTS_TAXONOMY_KEY,
            'field'     =>  'term_id',
            'terms'     =>  $sub_cats[0]->parent, 
        ),
    ),
);