Thumbnails for pdf is not coming on public page

Ankana · August 11, 2023, 9:10am

Hi there!

I am using Omeka Classic version 3.0.3 with ImageMagick 7.1.0-47.
Thumbnails are coming properly in the admin interface, but no thumbnails are generated on the public site. Also, the link of the file is not working unless I right-click and open it in a new window.

jflatnes · August 11, 2023, 9:37pm

Can you show a screenshot of the page showing the problem? Or even better, a link?

jflatnes · August 14, 2023, 2:35pm

What theme are you using?

It’s likely that the theme code just specifies to only display thumbnails when we have generated thumbnails for that file specifically and not to show fallbacks (or it’s written to not show thumbnails at all but that’s rarer).

Ankana · August 14, 2023, 6:40pm

I’m using DH @ Harvard

jflatnes · August 14, 2023, 6:45pm

On the browse page, it’s just written into the theme to not display an image unless it’s a generated thumbnail:

github.com

jaguillette/hvd-dh-omeka-theme/blob/main/items/browse.php#L49


      
          <div class="item-meta-title mfull t1of3">
              <h2><?php echo dh_link_to_item(dh_theme_get_display_title(), array('class'=>'permalink'),'show',null,$_GET); ?></h2>
              <?php
              $queryParams = $_GET;
              $queryParams['type'] = $item->item_type_id;
              ?>
              <p><em><a href="<?php echo absolute_url(array(),null,$queryParams); ?>">
              <?php echo metadata('item','item_type_name'); ?></a></em></p>
          </div>
          <div class="item-meta mfull t2of3">
          <?php if (metadata('item', 'has thumbnail')): ?>
          <div class="item-img m1of3">
              <?php echo dh_link_to_item(item_image('fullsize'),array(),'show',null,$_GET); ?>
          </div>
          <?php endif; ?>
          
          <?php if ($description = dh_theme_get_display_description(250)): ?>
          
          <?php if ($itemAttribution = get_theme_option('Item Attribution')) { ?>
          <div id="item-attribution">
          <?php

On the show page, it looks like enabling the theme’s “Show Item File Gallery” setting should show thumbnails there.

Ankana · August 16, 2023, 5:07am

Hi. Thanks for the note. Can you help me in modifying the PHP files? It would be of great help as I have very limited knowledge of PHP.

Ankana · August 18, 2023, 7:02am

Hi!
The mentioned is already enabled and that is also working fine for me but only in case of image files and not the pdf.

jflatnes · August 18, 2023, 8:35pm

As for the edit, try changing the line highlighted, line 49, from having has thumbnail to has files. So it would look like

<?php if (metadata('item', 'has files')): ?>

jflatnes · August 22, 2023, 7:03pm

You could try using the following line:

<?php echo item_image_gallery(); ?>

in your theme’s items/show.php file, underneath where “Files” is printed, around line 26. If that works how you want you could remove or comment out the lines below which are the theme’s normal way of displaying files, so they don’t get shown twice.

Ankana · August 23, 2023, 6:36am

Also, with this change, the thumbnail issue is solved while it is not working for the ‘Hide Files’ plugin. Where the files have been opted out for hiding, only the thumbnails are showing. Otherwise, the file opens up by clicking on the filename itself. So, is there a solution for that also?

jflatnes · August 30, 2023, 11:38pm

There’s search settings on the admin side, at Settings → Search, where you can choose what record types get indexed for search. Removing File there should remove it from the search on the front also.

I think for much of the rest of what you’ve mentioned, we’re probably moving beyond what’s easy for me to provide help and advice on here, particularly with the theme here being from an outside developer and the actual site not being accessible.

Ankana · August 31, 2023, 5:14am

That’s true. But thanks for your great help.
I would like to remove a part of the conversation where I included some attachments, to maintain certain privacy.