How to get images using taxonomy ( WP Media Folder)

Question

How would one go about creating a gallery page which is a gallery of galleries - using a specific photo from the subgallery as a cover for the album?

This is what I have so far.

I have a folder on the backend built using WP Media Folder called master. I want the galleries page to list a thumbnail for each folder inside of master and a name of the gallery the thumbnail belongs to.

Here is what I have.

$galleries = get_terms( 'wpmf-gallery-category', [ 'hide_empty' => 0 ]);

    foreach ( $galleries as $gal )
    {
        if ( $gal->name != 'master' )
        {
        ?>
            <div id="gallery-id-<? $gal->ID ?>" class="cell medium-3 margin-x text-center" style="border: solid black; ">
                    <figure class="cell">
                        <img src="<?= // Get sub-gallery thumbnail ?>" alt="<?= $gal->name?>">
                    </figure>
                    <div class="detail">
                        <span>
                            <?= $gal->name ?>
                        </span>
                    </div>
            </div>
        <?
        }
     }

I guess the question is, how do I access the images by the folder they are in? I don't see how WP Media Folder links to the images. I need to be able to query and get the image srcs from the gallery element id.

Answer 1

I created a custom function for this, but if you want the root folder id, you can use the wp cli and use the command wp term list wpmf-gallery-category to show all the gallery folders. Get the term id of the one you want to use as the root and set it to $master_id

/*
   get_root_gallery_id();
   Custom function that returns the id of folder with parent id == 0
*/
$master_id = get_root_gallery_id( 'master' );
$galleries = get_terms( 'wpmf-gallery-category', [ 'hide_empty' => 0 ]);

            // If there is a root folder
            if ( $master_id )
            {
                foreach ( $galleries as $gal )
                {
                    if ( $gal->parent == $master_id )
                    {
                        $args = [
                            'post_type'      => 'attachment',
                            'posts_per_page' => -1,
                            'post_status'    => 'inherit'

                            'tax_query'      => [
                                [
                                    'taxonomy' => 'wpmf-gallery-category',
                                    'terms'    => [ $gal->term_id ],
                                    'field'    => 'term_id'
                                ]
                            ]
                        ];

                        $query = new WP_Query( $args );

                        if ( $query->have_posts() )
                        {
                            while ( $query->have_posts() )
                            {

                                $query->the_post();

                                global $post; // Image as Post Object
                            }
                        }
                    }
                }
            }

Answer 2

We use 2 plugins to accomplish this without programming, the bonus being we don't have to worry about updating the code every 3 months...downside is obvious... MLA Library (Media Library Assistant I think is the actual name) and Content Views Pro by PT Guy. I can't remember if the free let's you filter media.