Category and Job Region in job permalink - Must save permalinks after adding the code to functions.php

gistfile1.txt

function job_listing_post_type_link( $permalink, $post ) {
    // Abort if post is not a job
    if ( $post->post_type !== 'job_listing' ) {
    	return $permalink;
    }

    // Abort early if the placeholder rewrite tag isn't in the generated URL
    if ( false === strpos( $permalink, '%' ) ) {
    	return $permalink;
    }

    // Get the custom taxonomy terms in use by this post
	$categories = wp_get_post_terms( $post->ID, 'job_listing_category', array( 'orderby' => 'parent', 'order' => 'ASC' ) );
	$regions    = wp_get_post_terms( $post->ID, 'job_listing_region', array( 'orderby' => 'parent', 'order' => 'ASC' ) );

	if ( empty( $categories ) ) {
		// If no terms are assigned to this post, use a string instead (can't leave the placeholder there)
		$job_listing_category = _x( 'uncategorized', 'slug' );
	} else {
		// Replace the placeholder rewrite tag with the first term's slug
		$first_term = array_shift( $categories );
		$job_listing_category = $first_term->slug;
	}

	if ( empty( $regions ) ) {
		// If no terms are assigned to this post, use a string instead (can't leave the placeholder there)
		$job_listing_region = _x( 'anywhere', 'slug' );
	} else {
		// Replace the placeholder rewrite tag with the first term's slug
		$first_term = array_shift( $regions );
		$job_listing_region = $first_term->slug;
	}

    $find = array(
    	'%category%',
    	'%region%'
    );

    $replace = array(
    	$job_listing_category,
    	$job_listing_region
    );

    $replace = array_map( 'sanitize_title', $replace );

    $permalink = str_replace( $find, $replace, $permalink );

    return $permalink;
}
add_filter( 'post_type_link', 'job_listing_post_type_link', 10, 2 );

function change_job_listing_slug( $args ) {
  $args['rewrite']['slug'] = 'job/%category%/%region%';
  return $args;
}
add_filter( 'register_post_type_job_listing', 'change_job_listing_slug' );

function add_region_endpoint_tag() {
	add_rewrite_tag( '%region%', '([^/]*)' );
}
add_action( 'init', 'add_region_endpoint_tag' );

Blog posts type return a 404 error if I remove 'job/' from change_job_listing_slug, some sites do not need the /job/ showing up so it makes sense to not have it there sometimes.

Thank you edarioq for your comment, i did not find why i had this 404 error. Is there any answer to this "job" issue ?

i have deleted job. First all 404's.. But don't forget to resave your permalink structure in wp admin.. now it works here..

Works fine but attachment page returns a 404 error. Any solution?

@mikejolley - Since the update to include text boxes in the admin that specify the 3 main slug options, should this code be updated to include the option from the settings rather than overwriting it in this function?

Just thinking of a site owner updating the settings for - /job/ and not seeing it reflected in the url.

Hi, Is there any way to add in permalink the types of jobs, in addition to the categories and regions? Sorry for my english.