list_of_documents_from_attatchment_post_type.php

<?php
// work in progress
// WP php script
// create a list of direct links to files via atattchment post type
// manage documents with media library
// have the documents appear in search results via attatchment post type

// made to work with https://wordpress.org/plugins/media-library-organizer/ because it has a more user friendly UI for handling media organisation AND it uses simple taxonomy rather then some similar, maybe better plugins
// If one wants to use it without the plugin uncomment the following block in order to create taxonomies for attatchment post type, and modify the args accordingly

/* 
// Add categories to attatchments
 function apuri_add_categories_to_attachments() {
 	register_taxonomy_for_object_type( 'category', 'attachment' );
 }
 add_action( 'init' , 'apuri_add_categories_to_attachments' );
*/


// shortcode with parameters - default is to list all files
add_shortcode( 'apuri_dokumenti', 'apuri_dokumenti_parameters_shortcode' );
function apuri_dokumenti_parameters_shortcode( $atts ) {
	ob_start();
    // define attributes and their defaults
    extract( shortcode_atts( array (
        'type' => array( 'attachment' ),
				'post_status' => 'any',
        'order' => 'ASC',
        'cat' => '',
				'doctype' => array(
					'application/pdf',
					'application/msword',
					'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
					'application/vnd.ms-excel',
					'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
			 ),
    ), $atts ) );
 
    // define query parameters based on attributes
    $options = array(
        'post_type' => $type,
				'post_status' => 'any',
        'order' => $order,
				'orderby'   => 'meta_value',
    		'meta_key'  => 'order_number',
        // 'category_name' => $cat, // if media library organizer is not used
				'tax_query' => array(
					array(
						'taxonomy'         => 'mlo-category', // Works either with custom tax or with default, only one cat at time
						'field'            => 'slug',
						'terms' => array( $cat ),
						// 'operator'         => 'IN',
					),
				),
				'post_mime_type' => $doctype,
    );
    $query = new WP_Query( $options );
    // run the loop based on the query
    if ( $query->have_posts() ) : while ( $query->have_posts() ) : $query->the_post();
			?>
        <ul class="documents-listing ">
						<?php
							$fileurl = wp_get_attachment_url( $the_post );
							$filetype = wp_check_filetype( $fileurl );
							echo '<li><a href="' . esc_url( $fileurl ) . '" class="document">';
							echo esc_html( the_title() . '.' );
							echo esc_html( $filetype['ext'] );
							echo '</a></li>'; 
						?>
        </ul>
    <?php
		endwhile; 
		
	else: 

		echo "<p>Sorry no docs are here</p>";

	endif;
		wp_reset_query();
		$apuri_clean = ob_get_clean();
    return $apuri_clean;
}