Reply To: Upload PDF Manuals on all product pages and display all the uploaded value

• jarvis

• October 20, 2021 at 4:55 pm

Ok, got this working.

In your template:

<?php
$args = array(
  'posts_per_page' 	=> 3, #must match the value in settings > reading > Blog pages show at most
  'post_type'		=> 'product',
  'orderby'			=> 'date',
  'order'			=> 'DESC',  
  'paged'			=> $paged,
  'fields'			=> 'ids'      
);
$wp_query = new WP_Query($args);
if ($wp_query->have_posts()) :
	while ($wp_query->have_posts()) : $wp_query->the_post();
the_title();
$pdf_upload = get_field('pdf_upload');
		if( $pdf_upload ): ?>
			<li> <a href="<?php echo $pdf_upload['url']; ?>"><?php the_title; ?></a></li>
		<?php endif; 

	endwhile;
endif; wp_reset_query(); ?>

<?php
#global $wp_query; // you can remove this line if everything works for you
 
// don't display the button if there are not enough posts
if (  $wp_query->max_num_pages > 1 )
	echo '<div class="misha_loadmore">More posts</div>'; // you can use <a> as well
?>

Create a javascript file called myloadmore.js and add the following:

jQuery(function($){ // use jQuery code inside this to avoid "$ is not defined" error
	$('.misha_loadmore').click(function(){
 
		var button = $(this),
		    data = {
			'action': 'loadmore',
			'query': misha_loadmore_params.posts, // that's how we get params from wp_localize_script() function
			'page' : misha_loadmore_params.current_page
		};
 
		$.ajax({ // you can also use $.post here
			url : misha_loadmore_params.ajaxurl, // AJAX handler
			data : data,
			type : 'POST',
			beforeSend : function ( xhr ) {
				button.text('Loading...'); // change the button text, you can also add a preloader image
			},
			success : function( data ){
				if( data ) { 
					button.text( 'More posts' ).prev().before(data); // insert new posts
					misha_loadmore_params.current_page++;
 
					if ( misha_loadmore_params.current_page == misha_loadmore_params.max_page ) 
						button.remove(); // if last page, remove the button
 
					// you can also fire the "post-load" event here if you use a plugin that requires it
					// $( document.body ).trigger( 'post-load' );
				} else {
					button.remove(); // if no data, remove the button as well
				}
			}
		});
	});
});

In your functions file, add the following:

function misha_my_load_more_scripts() {
 
	global $wp_query; 
 
	// In most cases it is already included on the page and this line can be removed
	wp_enqueue_script('jquery');
 
	// register our main script but do not enqueue it yet
	wp_register_script( 'my_loadmore', get_stylesheet_directory_uri() . '/js/myloadmore.js', array('jquery') );
 
	// now the most interesting part
	// we have to pass parameters to myloadmore.js script but we can get the parameters values only in PHP
	// you can define variables directly in your HTML but I decided that the most proper way is wp_localize_script()
	wp_localize_script( 'my_loadmore', 'misha_loadmore_params', array(
		'ajaxurl' => site_url() . '/wp-admin/admin-ajax.php', // WordPress AJAX
		'posts' => json_encode( $wp_query->query_vars ), // everything about your loop is here
		'current_page' => get_query_var( 'paged' ) ? get_query_var('paged') : 1,
		'max_page' => $wp_query->max_num_pages
	) );
 
 	wp_enqueue_script( 'my_loadmore' );
}
 
add_action( 'wp_enqueue_scripts', 'misha_my_load_more_scripts' );

Also in your functions file, add the following:

function misha_loadmore_ajax_handler(){
 
	// prepare our arguments for the query
	$args = json_decode( stripslashes( $_POST['query'] ), true );
	$args['paged'] = $_POST['page'] + 1; // we need next page to be loaded
	$args['post_status'] = 'publish';
 
	// it is always better to use WP_Query but not here
	query_posts( $args );
 
	if( have_posts() ) :
 
		// run the loop
		while( have_posts() ): the_post();
	
		$pdf_upload = get_field('pdf_upload');
		if( $pdf_upload ): ?>
			<li> <a href="<?php echo $pdf_upload['url']; ?>"><?php the_title(); ?></a></li>
		<?php endif; 
	
		endwhile;
 
	endif;
	die; // here we exit the script and even no wp_reset_query() required!
}
 
 
 
add_action('wp_ajax_loadmore', 'misha_loadmore_ajax_handler'); // wp_ajax_{action}
add_action('wp_ajax_nopriv_loadmore', 'misha_loadmore_ajax_handler'); // wp_ajax_nopriv_{action}

Tried and tested!