How do I add a category to my post_type

Question

I have a section in my dashboard called "services".

• I have 4 services
• I have 2 categories for these services: residential and commercial
• 2 of the 4 services have the category "residential", and the other 2 "commercial"

As it is now my services page is pulling up all 4 services.

Question: What code do I add, to show only the 2 services with the category of residential?

Here is my current code on the archive-service.php page:

$paged = ( get_query_var( 'paged' ) ) ? absint( get_query_var( 'paged' ) ) : 1;
$args = array(
    'post_type' => 'service',
    'posts_per_page' => 8,
    'paged' => $paged,
);
$wp_query = new WP_Query($args);
while($wp_query->have_posts()) : $wp_query->the_post();

Answer 1

Add this to your args:

'taxonomies' => array( 'category' )

Should look like this-

$args = array(
    'post_type' => 'service',
    'posts_per_page' => 8,
    'paged' => $paged,
    'taxonomies' => array( 'category' ),
);

Answer 2

From the above Codex page, I used this:

'tax_query' => array( array( 'taxonomy' => 'people', 'field' => 'slug', 'terms' => 'bob', ), ),

But changed it to this:

'tax_query' => array( array( 'taxonomy' => 'category_service', 'field' => 'slug', 'terms' => 'residential', ), ),

My final code:

<?php 
            $paged = ( get_query_var( 'paged' ) ) ? absint( get_query_var( 'paged' ) ) : 1;
            $args = array(
                'post_type' => 'service',
                'posts_per_page' => 8,
                'paged' => $paged,
                'tax_query' => array(
                        array(
                            'taxonomy' => 'category_service',
                            'field'    => 'slug',
                            'terms'    => 'residential',
                        ),
                    ),

            );
            $wp_query = new WP_Query($args);
            while($wp_query->have_posts()) : $wp_query->the_post();
        ?>

Thanks again!