<p>By default, attachments do not have a version query parameter, like, for example JavaScript files have. This plugins adds version numbers to the query strings of attachments.</p>
<p>Version numbers in query strings are useful for caching. If an attachment changes, its version number and, therefore, its URL changes. This allows for the attachment to be cached for an extended period of time or indefintely, for example, with the directive “immutable” of the Cache-Control header.</p>


Attachment URL Version

Adds the version number of attachments to their URL.

Jon Christopher

<p><strong>Extensive</strong> usage instructions are <a href="https://github.com/jchristopher/attachments/#attachments" rel="nofollow ugc">available on GitHub</a></p>
<p>Attachments allows you to simply append any number of items from your WordPress Media Library to Posts, Pages, and Custom Post Types.</p>
<h4>Associate Media items with posts</h4>
<p>The idea behind Attachments is to give developers the ability to directly associate Media items with any post. This is accomplished by adding a meta box to post edit screens as determined by the developer. Once Media items have been associated with a post, you’re able to retrieve those Attachments and include them directly within your template files using any specific markup you wish.</p>
<h4>Integrate Attachments within your theme with fine grained control</h4>
<p><strong>Attachments does not automatically integrate itself with your theme.</strong> Since the idea behind Attachments is to allow integration of Media within posts using developer-crafted, unique markup, <em>it’s up to you to integrate with your theme</em>. The most basic integration includes editing the <a href="https://codex.wordpress.org/Template_Hierarchy" rel="nofollow ugc">appropriate template file</a> and adding your call(s) to Attachments. For example, if you have set up Attachments to be used with your Posts entries, edit <code>single.php</code> to include the following within The Loop:</p>
<pre><code><?php $attachments = new Attachments( 'attachments' ); /* pass the instance name */ ?>
<?php if( $attachments->exist() ) : ?>
  <h3>Attachments</h3>
  <p>Total Attachments: <?php echo $attachments->total(); ?></p>
  <ul>
    <?php while( $attachments->get() ) : ?>
      <li>
        ID: <?php echo $attachments->id(); ?><br />
        Type: <?php echo $attachments->type(); ?><br />
        Subtype: <?php echo $attachments->subtype(); ?><br />
        URL: <?php echo $attachments->url(); ?><br />
        Image: <?php echo $attachments->image( 'thumbnail' ); ?><br />
        Source: <?php echo $attachments->src( 'full' ); ?><br />
        Size: <?php echo $attachments->filesize(); ?><br />
        Title Field: <?php echo $attachments->field( 'title' ); ?><br />
        Caption Field: <?php echo $attachments->field( 'caption' ); ?>
      </li>
    <?php endwhile; ?>
  </ul>
<?php endif; ?>
</code></pre>
<p>That snippet will request all of the existing Attachments defined for the current Post within The Loop, and retrieve each itemized property for that Attachment. Using the provided details you’re able to integrate the attached Media items in any way you please.</p>
<p>There is a lot more information on <a href="https://github.com/jchristopher/attachments" rel="nofollow ugc">Attachments’ GitHub page</a>. Please contribute!</p>
<h3>Roadmap</h3>
<p>Please see <a href="https://github.com/jchristopher/attachments/blob/master/docs/roadmap.md" rel="nofollow ugc">Attachments on GitHub</a></p>
<h3>Usage</h3>
<p><strong>Extensive</strong> usage instructions are <a href="https://github.com/jchristopher/attachments/blob/master/docs/usage.md" rel="nofollow ugc">available on GitHub</a></p>


Attachments

This plugin provides functionality that should come with WP core.



The missing plugin

Great plugin

Excellent Plugin

Attachments allows you to simply append any number of items from your WordPress Media Library to Posts, Pages, and Custom Post Types

Attachment URL Version vs Attachments