WordPress Development Stack Exchange is a question and answer site for WordPress developers and administrators. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

For some reason I'm finding it a struggle to grab any posts using a custom taxonomy... can anyone unravel my stupidity?

 $args = array(
    'post_type' => 'adverts',
    'advert_tag' => 'politics' // Doesn't seem to work.
  );

query_posts($args); 

while ( have_posts() ) : the_post();
 //Show Posts
endwhile;

Taxonomy Declaration:

add_action( 'init', 'add_custom_taxonomy', 0 );
function add_custom_taxonomy() {
register_taxonomy('advert_tag', 'Adverts', array(
  'hierarchical' => true,
  'labels' => array(
    'name' => _x( 'Advert Tags', 'taxonomy general name' ),
    'singular_name' => _x( 'Advert Tag', 'taxonomy singular name' ),
    'search_items' =>  __( 'Search Advert Tags' ),
    'all_items' => __( 'All Advert Tags' ),
    'parent_item' => __( 'Parent Advert Tag' ),
    'parent_item_colon' => __( 'Parent Advert Tag:' ),
    'edit_item' => __( 'Edit Advert Tag' ),
    'update_item' => __( 'Update Advert Tag' ),
    'add_new_item' => __( 'Add New Advert Tag' ),
    'new_item_name' => __( 'New Advert Tag Name' ),
    'menu_name' => __( 'Advert Tags' ),
  ),
  'rewrite' => array(
    'slug' => 'advert-tags',
    'with_front' => false,
    'hierarchical' => true
  ),
));
  }

Custom Post Type Declaration:

  add_action( 'init', 'create_post_type' );
  function create_post_type() {
    register_post_type( 'Adverts',
    array(
        'labels' => array(
            'name' => __( 'Adverts' ),
            'singular_name' => __( 'Advert'),
            'add_new' => __( 'Add New' ),
            'add_new_item' => __( 'Add a New Advert' ),
            'edit' => __( 'Edit' ),
            'edit_item' => __( 'Edit Advert' ),
            'new_item' => __( 'New Advert' ),
            'view' => __( 'View' ),
            'view_item' => __( 'View Advert' ),
            'search_items' => __( 'Search Adverts' ),
            'not_found' => __( 'No Adverts found' ),
            'not_found_in_trash' => __( 'No Adverts found in Trash' ),
            ),
        'supports' => array(
                'title',
                'thumbnail',
            ),
        'has_archive' => true,
        'menu_position' => 10,
        'public' => true,
        'rewrite' => array( 'slug' => 'adverts' ),
        'taxonomies' => array('advert_tag')
    )
);

}

share|improve this question
up vote 3 down vote accepted

Firs of all don't use query_posts() ever, read more about it here: When should you use WP_Query vs query_posts() vs get_posts()?.

You have to use WP_Query to fetch posts what you need. Read documentation for it. In your case the query could be like this:

$the_query = new WP_Query( array(
    'post_type' => 'Adverts',
    'tax_query' => array(
        'taxonomy' => 'advert_tag',
        'field' => 'slug',
        'terms' => 'politics',
    ),
) );

while ( $the_query->have_posts() ) :
    $the_query->the_post();
    // Show Posts ...
endwhile;

/* Restore original Post Data 
 * NB: Because we are using new WP_Query we aren't stomping on the 
 * original $wp_query and it does not need to be reset.
*/
wp_reset_postdata();
share|improve this answer
    
Thank you very much! – Stephen Feb 7 '13 at 14:08
1  
Just noticed that it seems to pull all posts with the custom post type 'Adverts'. However this seems to do the job: $the_query = new WP_Query( array( 'post_type' => 'Adverts', 'advert_tag' => 'politics' )); – Stephen Feb 7 '13 at 14:21
    
@Stephen {tax} was deprecated since version 3.1 in favor of {tax_query} and {tax_query} was introduced. this still works but we should not use the deprecated functions. tax_query is used with an array of taxonomy queries. i was working on FAQs Custom Post type and it worked for me pretty much the same way as {tax} taxonomy slug argument in WP_Query does. – talentedaamer Nov 19 '15 at 20:56

i am using this query to fetch custom posts (FAQs Posts) with its custom taxonomy (faq_category). since {taxonomy} parameter in WP_Query args was deprecated since v.3.1 and introduced {tax_query}. below is the code that works perfectly.

$query = new WP_Query( array(
    'post_type' => 'faqs',          // name of post type.
    'tax_query' => array(
        array(
            'taxonomy' => 'faq_category',   // taxonomy name
            'field' => 'term_id',           // term_id, slug or name
            'terms' => 48,                  // term id, term slug or term name
        )
    )
) );

while ( $query->have_posts() ) : $query->the_post();
    // do stuff here....
endwhile;

/**
 * reset the orignal query
 * we should use this to reset wp_query
 */
wp_reset_query();
share|improve this answer

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.