Display custom taxonomy with posts having meta_key=xyz and meta_value=1

This topic has 2 replies, 2 voices, and was last updated 2 years, 4 months ago by Shemzone.

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April 15, 2022 at 11:25 PM #35658

Participant

Hi all
I have a function calling the display of taxonomies being 'project-taxonomy' related to posts having a post_type="projects"
Until so far, no problem.
But I'd like to display only taxonomies 'project-taxonomy' having posts from post_type="projects" AND a meta_key='display_homepage' with meta_value=1
Is it possible?
The goal being not display the taxonomies which have not posts with this condition (meta_key='display_homepage' with meta_value=1)

My current function is the following:

function projects_get_filters( $taxonomy ) {
    $terms = get_terms( $taxonomy );
    $count = count( $terms );
    if ( $count > 0 ) { ?>
        <div class="projects-categories filter-button-group">
            <button class="shz-btn--s active" data-filter="*"><?php esc_html_e( 'Tout', 'text-domain' ); ?></button>
            <?php foreach ( $terms as $term ) { ?>
                <button class="shz-btn--s" data-filter=".<?php echo esc_attr( $term->slug ); ?>"><?php echo esc_html( $term->name ); ?></button>
            <?php } ?>
        </div>
    <?php
    }
}

And I call it with:
projects_get_filters( 'project-taxonomy' );

Thank you for your help and ideas

April 16, 2022 at 6:41 PM #35671

Long Nguyen

Moderator

Hi,

I think you can create a custom query to query post with parameter custom fields, see here https://developer.wordpress.org/reference/classes/wp_query/#custom-field-post-meta-parameters

then get the term by post ID https://developer.wordpress.org/reference/functions/get_the_terms/

April 21, 2022 at 4:27 PM #35745

Shemzone

Participant

Hi Long and thank you.
I have managed this in a different way but similar. For now it works. I'm going to improve it, especially on the loop part because I'm not confortable with the repeated WP_Query within the loop.

function projects_get_filters_homepage( $taxonomy ) {
    $terms = get_terms( $taxonomy );
    $count = count($terms);
    ?>
    <div class="projects-categories filter-button-group">
        <button class="shz-btn--s active" data-filter="*"><?php esc_html_e( 'Tout', 'text-domain' ); ?></button>
    <?php
    if ( $count > 0 ){
        foreach ( $terms as $term ) {
            $args = array(
            'post_type'    => 'project',
            'meta_key'     => 'display_homepage',
            'meta_value'   => '1',
            'tax_query'    => array(
                    'relation' => 'AND',
                    array(
                        'taxonomy' => 'project-taxonomy',
                        'field'    => 'slug',
                        'terms'    => $term->slug
                    )
                )
            );
            $my_query = new WP_Query( $args );

            if ( (int)$my_query->post_count > 0 ) { ?>
            <button class="shz-btn--s" data-filter=".<?php echo esc_attr( $term->slug ); ?>"><?php echo esc_html( $term->name ); ?></button>
                <?php            
            }
        }
    }
    ?>
    </div>
    <?php
}

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