wp query - Get term by custom term meta and taxonomy

How to get term by custom term meta and taxonomy or how to filter tax_query by term meta instead slug/id?

function custom_pre_get_posts($query)
{
    global $wp_query;

    if ( !is_admin() && is_shop() && $query->is_main_query()  && is_post_type_archive( "product" )) 
    {
        $term = ???get_term_by_meta_and_taxonomy???('custom_meta_term','my_taxonomy');
        $t_id = $term['term_id'];
        $tax_query = array
        (
            array
            (
                'taxonomy' => 'my_taxoomy',
                'field' => 'id',
                'terms' => $t_id
            )
        );
        $query->set( 'tax_query', $tax_query );
    }
}
add_action( 'pre_get_posts', 'custom_pre_get_posts' );

How to get term by custom term meta and taxonomy or how to filter tax_query by term meta instead slug/id?

function custom_pre_get_posts($query)
{
    global $wp_query;

    if ( !is_admin() && is_shop() && $query->is_main_query()  && is_post_type_archive( "product" )) 
    {
        $term = ???get_term_by_meta_and_taxonomy???('custom_meta_term','my_taxonomy');
        $t_id = $term['term_id'];
        $tax_query = array
        (
            array
            (
                'taxonomy' => 'my_taxoomy',
                'field' => 'id',
                'terms' => $t_id
            )
        );
        $query->set( 'tax_query', $tax_query );
    }
}
add_action( 'pre_get_posts', 'custom_pre_get_posts' );

• wp-query
• tax-query
• term-meta

Share Improve this question asked Jul 1, 2016 at 16:18 SeviSevi 31522 gold badges44 silver badges88 bronze badges

Add a comment  | 

3 Answers 3

Sorted by: Reset to default 23

Try This:

$args = array(
'hide_empty' => false, // also retrieve terms which are not used yet
'meta_query' => array(
    array(
       'key'       => 'feature-group',
       'value'     => 'kitchen',
       'compare'   => 'LIKE'
    )
),
'taxonomy'  => 'category',
);
$terms = get_terms( $args );

Building on the answer from ilgıt-yıldırım above, both the get_term_meta statement and $key == 'meta_value' statements need to contain $term>term_id.

Here's a complete example including the custom $wp_query request:

$term_args = array( 'taxonomy' => 'your-taxonomy' );
$terms = get_terms( $term_args );

$term_ids = array();

foreach( $terms as $term ) {
    $key = get_term_meta( $term->term_id, 'term-meta-key', true );

    if( $key == 'term-meta-value' ) {
        // push the ID into the array
        $term_ids[] = $term->term_id;
    }
}

// Loop Args
$args = array(
'post_type' => 'posts',
'tax_query' => array(
    array(
        'taxonomy' => 'your-taxonomy',
        'terms'    => $term_ids,
         ),
    ),
);

// The Query
$featured = new WP_Query( $args );

You'll need to loop through each of the terms in your main query conditional. Assuming there will likely be more than one term with the custom data, you'll then need to pass an array of IDs into your tax query.

For example, looping through each term to check for custom meta:

$term_args = array(
    'taxonomy' => $taxonomy_name,
    );


$terms = get_terms( $term_args );

$term_ids = array();

foreach( $terms as $term ) {
    $key = get_term_meta( $term->ID, 'meta_key', true );
    if( $key == 'meta_value' ) {
        // push the ID into the array
        $term_ids[] = $term->ID;
    }
}

Then you end up with the variable $term_ids which contains an array of the term IDs you're looking for. You can pass that to your tax query.