Ksider

if (current_user_can('user_role')) {
echo 'кастомная страница';
 }
else {
echo 'авторизуйтесь';
}

<a href="<?php the_permalink(); ?>">
<?php
$img = get_attached_media('image', $post->ID); 
if ($img) {
    foreach ($img as $id => $attachment) {
$thumb = wp_get_attachment_image_src($id, 'thumbnail')  ?>
<img src="<?php echo $thumb[0]; ?>" alt="<?php the_title(); ?>">
<?php } }?>
</a>

<div class="container">
[file]
<p>файлы сюда</p>
</div>

.container {
position:relative;
}
input {
position: absolute;
top:0; right:0; bottom:0; left;0;
opacity:0;
}

$('form input[type="file"]').change(function () {
    $('.container p').html(this.files.length);
  });

input:checked + .modal_window {dispaly:block; position:absolute;}

<input type="radio" name="" id="id1">   
<label for="id1"><img src="" alt=""></label>