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<title>[52433] trunk/src/wp-includes/revision.php: Revisions: Improve `_set_preview` for case when autosave is missing.</title>
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<dt style="float: left; width: 6em; font-weight: bold">Revision</dt> <dd><a style="font-weight: bold" href="https://core.trac.wordpress.org/changeset/52433">52433</a><script type="application/ld+json">{"@context":"http://schema.org","@type":"EmailMessage","description":"Review this Commit","action":{"@type":"ViewAction","url":"https://core.trac.wordpress.org/changeset/52433","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>audrasjb</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2022-01-04 00:18:11 +0000 (Tue, 04 Jan 2022)</dd>
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<pre style='padding-left: 1em; margin: 2em 0; border-left: 2px solid #ccc; line-height: 1.25; font-size: 105%; font-family: sans-serif'>Revisions: Improve `_set_preview` for case when autosave is missing.
This change fixes an issue where autosaves are deleted when a new autosave is sent with the same data. In the block editor, this causes the preview data to be missing on post previews. The end result of this is that if one set a preview image using a block theme on a published post and preview it, the featured image is not displayed correctly. Skipping deleting the previous autosave fixes the issue.
Props adamsilverstein, walbo, audrasjb, Mamaduka, hellofromTonya.
Fixes <a href="https://core.trac.wordpress.org/ticket/54708">#54708</a>.</pre>
<h3>Modified Paths</h3>
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<li><a href="#trunksrcwpincludesrevisionphp">trunk/src/wp-includes/revision.php</a></li>
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<h3>Diff</h3>
<a id="trunksrcwpincludesrevisionphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/wp-includes/revision.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-includes/revision.php 2022-01-03 22:12:52 UTC (rev 52432)
+++ trunk/src/wp-includes/revision.php 2022-01-04 00:18:11 UTC (rev 52433)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -638,15 +638,14 @@
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> $preview = wp_get_post_autosave( $post->ID );
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- if ( ! is_object( $preview ) ) {
- return $post;
- }
</del><span class="cx" style="display: block; padding: 0 10px">
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- $preview = sanitize_post( $preview );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ if ( is_object( $preview ) ) {
+ $preview = sanitize_post( $preview );
</ins><span class="cx" style="display: block; padding: 0 10px">
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- $post->post_content = $preview->post_content;
- $post->post_title = $preview->post_title;
- $post->post_excerpt = $preview->post_excerpt;
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ $post->post_content = $preview->post_content;
+ $post->post_title = $preview->post_title;
+ $post->post_excerpt = $preview->post_excerpt;
+ }
</ins><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> add_filter( 'get_the_terms', '_wp_preview_terms_filter', 10, 3 );
</span><span class="cx" style="display: block; padding: 0 10px"> add_filter( 'get_post_metadata', '_wp_preview_post_thumbnail_filter', 10, 3 );
</span></span></pre>
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