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<title>[48748] trunk: Comments: Update comment cache in the upgrade routine for changing the `comment_type` DB field value in comments table.</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/48748">48748</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/48748","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>SergeyBiryukov</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2020-08-07 14:27:40 +0000 (Fri, 07 Aug 2020)</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'>Comments: Update comment cache in the upgrade routine for changing the `comment_type` DB field value in comments table.

This ensures that comment object cache is cleared after changing the comment type to `comment` instead of an empty string.

Add a unit test for `_wp_batch_update_comment_type()`.

Follow-up to <a href="https://core.trac.wordpress.org/changeset/47597">[47597]</a>, <a href="https://core.trac.wordpress.org/changeset/47626">[47626]</a>, <a href="https://core.trac.wordpress.org/changeset/48225">[48225]</a>, <a href="https://core.trac.wordpress.org/changeset/48227">[48227]</a>.

Props imath, westonruter.
Fixes <a href="https://core.trac.wordpress.org/ticket/49236">#49236</a>.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunksrcwpincludescommentphp">trunk/src/wp-includes/comment.php</a></li>
</ul>

<h3>Added Paths</h3>
<ul>
<li><a href="#trunktestsphpunittestscommentwpBatchUpdateCommentTypephp">trunk/tests/phpunit/tests/comment/wpBatchUpdateCommentType.php</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunksrcwpincludescommentphp"></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/comment.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-includes/comment.php 2020-08-07 13:49:47 UTC (rev 48747)
+++ trunk/src/wp-includes/comment.php   2020-08-07 14:27:40 UTC (rev 48748)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -3839,11 +3839,11 @@
</span><span class="cx" style="display: block; padding: 0 10px">         */
</span><span class="cx" style="display: block; padding: 0 10px">        $comment_batch_size = (int) apply_filters( 'wp_update_comment_type_batch_size', 100 );
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-        // Update the `comment_type` field value to be `comment` for the next batch of comments.
-       $wpdb->query(
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ // Get the IDs of the comments to update.
+       $comment_ids = $wpdb->get_col(
</ins><span class="cx" style="display: block; padding: 0 10px">                 $wpdb->prepare(
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                        "UPDATE {$wpdb->comments}
-                       SET comment_type = 'comment'
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                 "SELECT comment_ID
+                       FROM {$wpdb->comments}
</ins><span class="cx" style="display: block; padding: 0 10px">                         WHERE comment_type = ''
</span><span class="cx" style="display: block; padding: 0 10px">                        ORDER BY comment_ID DESC
</span><span class="cx" style="display: block; padding: 0 10px">                        LIMIT %d",
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -3851,6 +3851,21 @@
</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"> 
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+        if ( $comment_ids ) {
+               $comment_id_list = implode( ',', $comment_ids );
+
+               // Update the `comment_type` field value to be `comment` for the next batch of comments.
+               $wpdb->query(
+                       "UPDATE {$wpdb->comments}
+                       SET comment_type = 'comment'
+                       WHERE comment_type = ''
+                       AND comment_ID IN ({$comment_id_list})" // phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared
+               );
+
+               // Make sure to clean the comment cache.
+               clean_comment_cache( $comment_ids );
+       }
+
</ins><span class="cx" style="display: block; padding: 0 10px">         delete_option( $lock_name );
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span></span></pre></div>
<a id="trunktestsphpunittestscommentwpBatchUpdateCommentTypephp"></a>
<div class="addfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Added: trunk/tests/phpunit/tests/comment/wpBatchUpdateCommentType.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/tests/phpunit/tests/comment/wpBatchUpdateCommentType.php                            (rev 0)
+++ trunk/tests/phpunit/tests/comment/wpBatchUpdateCommentType.php      2020-08-07 14:27:40 UTC (rev 48748)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -0,0 +1,49 @@
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+<?php
+
+/**
+ * @group comment
+ * @covers ::_wp_batch_update_comment_type
+ */
+class Tests_Batch_Update_Comment_Type extends WP_UnitTestCase {
+
+       /**
+        * @ticket 49236
+        */
+       public function test__wp_batch_update_comment_type() {
+               global $wpdb;
+
+               $comment_ids     = self::factory()->comment->create_many( 3 );
+               $comment_id_list = implode( ',', $comment_ids );
+
+               $wpdb->query(
+                       "UPDATE {$wpdb->comments}
+                       SET comment_type = ''
+                       WHERE comment_type = 'comment'
+                       AND comment_ID in ({$comment_id_list})" // phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared
+               );
+
+               clean_comment_cache( $comment_ids );
+
+               foreach ( $comment_ids as $comment_id ) {
+                       $comment = get_comment( $comment_id );
+                       $this->assertEmpty( $comment->comment_type );
+               }
+
+               add_filter( 'wp_update_comment_type_batch_size', array( $this, 'filter_comment_type_batch_size' ) );
+               add_filter( 'schedule_event', '__return_null' );
+
+               _wp_batch_update_comment_type();
+
+               remove_filter( 'wp_update_comment_type_batch_size', array( $this, 'filter_comment_type_batch_size' ) );
+               remove_filter( 'schedule_event', '__return_null' );
+
+               foreach ( $comment_ids as $comment_id ) {
+                       $updated_comment = get_comment( $comment_id );
+                       $this->assertEquals( 'comment', $updated_comment->comment_type );
+               }
+       }
+
+       public function filter_comment_type_batch_size() {
+               return 3;
+       }
+}
</ins><span class="cx" style="display: block; padding: 0 10px">Property changes on: trunk/tests/phpunit/tests/comment/wpBatchUpdateCommentType.php
</span><span class="cx" style="display: block; padding: 0 10px">___________________________________________________________________
</span></span></pre></div>
<a id="svneolstyle"></a>
<div class="addfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Added: svn:eol-style</h4></div>
<ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+native
</ins><span class="cx" style="display: block; padding: 0 10px">\ No newline at end of property
</span></div>

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