Image sort by category

gistfile1.txt

<?php
/*
Template Name: Test
*/
 
get_header();
 
?>
 
<div id="main-content">
 
<?php 
		 
$args = array(
	'post_type' => 'attachment',
	'post_status' => 'any',
	'tax_query' => array(
		array(
			'taxonomy' => 'media_category',
			'field' => 'slug',
			'terms' => 'formal'
		)
	)
);
		
$the_query = new WP_Query( $args );
 
if ( $the_query->have_posts() ) {
	while ( $the_query->have_posts() ) {
		$the_query->the_post();
		$custom_url = get_post_meta( get_the_ID(), '_gallery_link_url', true );
		$custom_image_alt = get_post_meta( get_the_ID(), '_wp_attachment_image_alt', true );
		echo '<a href="' . $custom_url . '" target="_blank" title="' . $custom_image_alt . '" alt="' . $custom_image_alt . '" >' . wp_get_attachment_image( get_the_ID(), 'thumb' ) . '</a>';
		get_post_meta( get_the_ID(), '_wp_attachment_image_alt', true );
		
	}
} else {
	// no attachments found
}

		echo '<ul class="styles">';
		echo get_the_term_list( $post->slug, 'media_category','',' ','');
		echo '</ul>';
?>

<form name="jump">
        <select name="menu">
            <?php
              while ($the_query->have_posts()) : $the_query->the_post(); ?>
                <option value="<?php the_permalink() ?>"><?php the_title(); ?></option>
                <?php
              endwhile;
            
            ?>
        </select>
        <input type="button" onClick="location=document.jump.menu.options[document.jump.menu.selectedIndex].value;" value="Go">
    </form> 
 
 
<?php 
wp_reset_postdata();
 
?>
 
</div> <!-- #main-content -->
 
<?php get_footer(); ?>