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<title>[49985] trunk: Media: Ensure `get_post_status()` returns correct result for attachments.</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/49985">49985</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/49985","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>peterwilsoncc</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2021-01-20 04:39:24 +0000 (Wed, 20 Jan 2021)</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'>Media: Ensure `get_post_status()` returns correct result for attachments.

Prevent `get_post_status()` returning `false` for attachments if the parent post has been deleted. The returned attachment post status is now passed through the `get_post_status` filter.

Add tests for `get_post_status()`.

Props peterwilsoncc, timothyblynjacobs for review.
Fixes <a href="https://core.trac.wordpress.org/ticket/52326">#52326</a>.</pre>

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

<h3>Added Paths</h3>
<ul>
<li><a href="#trunktestsphpunittestspostgetPostStatusphp">trunk/tests/phpunit/tests/post/getPostStatus.php</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunksrcwpincludespostphp"></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/post.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-includes/post.php    2021-01-19 16:46:50 UTC (rev 49984)
+++ trunk/src/wp-includes/post.php      2021-01-20 04:39:24 UTC (rev 49985)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -901,25 +901,43 @@
</span><span class="cx" style="display: block; padding: 0 10px">                return false;
</span><span class="cx" style="display: block; padding: 0 10px">        }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-        if ( 'attachment' === $post->post_type ) {
-               if ( 'private' === $post->post_status ) {
-                       return 'private';
-               }
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ $post_status = $post->post_status;
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                // Unattached attachments are assumed to be published.
-               if ( ( 'inherit' === $post->post_status ) && ( 0 == $post->post_parent ) ) {
-                       return 'publish';
-               }
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ if (
+               'attachment' === $post->post_type &&
+               'inherit' === $post_status
+       ) {
+               // Attachment permitted statuses: 'inherit', , see wp_insert_post().
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                // Inherit status from the parent.
-               if ( $post->post_parent && ( $post->ID != $post->post_parent ) ) {
-                       $parent_post_status = get_post_status( $post->post_parent );
-                       if ( 'trash' === $parent_post_status ) {
-                               return get_post_meta( $post->post_parent, '_wp_trash_meta_status', true );
-                       } else {
-                               return $parent_post_status;
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         if (
+                       0 === $post->post_parent ||
+                       ! get_post( $post->post_parent ) ||
+                       $post->ID === $post->post_parent
+               ) {
+                       // Unattached attachments with inherit status are assumed to be published.
+                       $post_status = 'publish';
+               } elseif ( 'trash' === get_post_status( $post->post_parent ) ) {
+                       // Get parent status prior to trashing.
+                       $post_status = get_post_meta( $post->post_parent, '_wp_trash_meta_status', true );
+                       if ( ! $post_status ) {
+                               // Assume publish as above.
+                               $post_status = 'publish';
</ins><span class="cx" style="display: block; padding: 0 10px">                         }
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                } else {
+                       $post_status = get_post_status( $post->post_parent );
</ins><span class="cx" style="display: block; padding: 0 10px">                 }
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+        } elseif (
+               'attachment' === $post->post_type &&
+               ! in_array( $post_status, array( 'private', 'trash', 'auto-draft' ), true )
+       ) {
+               /*
+                * Ensure uninherited attachments have a permitted status either 'private', 'trash', 'auto-draft'.
+                * This is to match the logic in wp_insert_post().
+                *
+                * Note: 'inherit' is excluded from this check as it is resolved to the parent post's
+                * status in the logic block above.
+                */
+               $post_status = 'publish';
</ins><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><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -926,11 +944,12 @@
</span><span class="cx" style="display: block; padding: 0 10px">         * Filters the post status.
</span><span class="cx" style="display: block; padding: 0 10px">         *
</span><span class="cx" style="display: block; padding: 0 10px">         * @since 4.4.0
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         * @since 5.7.0 The attachment post type is now passed through this filter.
</ins><span class="cx" style="display: block; padding: 0 10px">          *
</span><span class="cx" style="display: block; padding: 0 10px">         * @param string  $post_status The post status.
</span><span class="cx" style="display: block; padding: 0 10px">         * @param WP_Post $post        The post object.
</span><span class="cx" style="display: block; padding: 0 10px">         */
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-        return apply_filters( 'get_post_status', $post->post_status, $post );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ return apply_filters( 'get_post_status', $post_status, $post );
</ins><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></span></pre></div>
<a id="trunktestsphpunittestspostgetPostStatusphp"></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/post/getPostStatus.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/tests/phpunit/tests/post/getPostStatus.php                          (rev 0)
+++ trunk/tests/phpunit/tests/post/getPostStatus.php    2021-01-20 04:39:24 UTC (rev 49985)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -0,0 +1,167 @@
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+<?php
+
+/**
+ * @group post
+ */
+class Tests_Post_GetPostStatus extends WP_UnitTestCase {
+
+       /**
+        * Array of post IDs.
+        *
+        * @var int[]
+        */
+       public static $post_ids;
+
+       /**
+        * Create shared fixtures.
+        */
+       public static function wpSetUpBeforeClass( WP_UnitTest_Factory $factory ) {
+               $post_statuses = array( 'publish', 'future', 'draft', 'auto-draft', 'trash', 'private', 'delete' );
+               foreach ( $post_statuses as $post_status ) {
+                       $date          = '';
+                       $actual_status = $post_status;
+                       if ( 'future' === $post_status ) {
+                               $date = strftime( '%Y-%m-%d %H:%M:%S', strtotime( '+1 year' ) );
+                       } elseif ( in_array( $post_status, array( 'trash', 'delete' ), true ) ) {
+                               $actual_status = 'publish';
+                       }
+
+                       self::$post_ids[ $post_status ] = $factory->post->create(
+                               array(
+                                       'post_status' => $actual_status,
+                                       'post_date'   => $date,
+                                       'post_name'   => "$post_status-post",
+                               )
+                       );
+
+                       // Attachments without parent or media.
+                       self::$post_ids[ "$post_status-attachment-no-parent" ] = $factory->attachment->create_object(
+                               array(
+                                       'post_status' => $actual_status,
+                                       'post_name'   => "$post_status-attachment-no-parent",
+                                       'post_date'   => $date,
+                               )
+                       );
+
+                       // Attachments without media.
+                       self::$post_ids[ "$post_status-attachment" ] = $factory->attachment->create_object(
+                               array(
+                                       'post_parent' => self::$post_ids[ $post_status ],
+                                       'post_status' => 'inherit',
+                                       'post_name'   => "$post_status-attachment",
+                                       'post_date'   => $date,
+                               )
+                       );
+               }
+
+               // Attachment with incorrect parent ID.
+               self::$post_ids['badly-parented-attachment'] = $factory->attachment->create_object(
+                       array(
+                               'post_parent' => PHP_INT_MAX, // Impossibly large number.
+                               'post_status' => 'inherit',
+                               'post_name'   => "$post_status-attachment",
+                               'post_date'   => $date,
+                       )
+               );
+
+               // Trash the trash post and attachment.
+               wp_trash_post( self::$post_ids['trash'] );
+               wp_trash_post( self::$post_ids['trash-attachment-no-parent'] );
+
+               // Force delete parent and unattached post objects.
+               wp_delete_post( self::$post_ids['delete'], true );
+               wp_delete_post( self::$post_ids['delete-attachment-no-parent'], true );
+       }
+
+       /**
+        * Ensure `get_post_status()` resolves correctly for posts and attachments.
+        *
+        * @ticket 52326
+        * @dataProvider data_get_post_status_resolves
+        *
+        * @param string $post_key The post key in self::$post_ids.
+        * @param string $expected The expected get_post_status() return value.
+        */
+       public function test_get_post_status_resolves( $post_key, $expected ) {
+               $this->assertSame( $expected, get_post_status( self::$post_ids[ $post_key ] ) );
+       }
+
+       /**
+        * Data provider for test_get_post_status_resolves().
+        *
+        * @return array[] {
+        *     @type string $post_key The post key in self::$post_ids.
+        *     @type string $expected The expected get_post_status() return value.
+        * }
+        */
+       public function data_get_post_status_resolves() {
+               return array(
+                       array( 'publish', 'publish' ),
+                       array( 'future', 'future' ),
+                       array( 'draft', 'draft' ),
+                       array( 'auto-draft', 'auto-draft' ),
+                       array( 'trash', 'trash' ),
+                       array( 'private', 'private' ),
+                       array( 'delete', false ),
+
+                       // Attachment with `inherit` status from parent.
+                       array( 'publish-attachment', 'publish' ),
+                       array( 'future-attachment', 'future' ),
+                       array( 'draft-attachment', 'draft' ),
+                       array( 'auto-draft-attachment', 'auto-draft' ),
+                       array( 'trash-attachment', 'publish' ),
+                       array( 'private-attachment', 'private' ),
+                       array( 'delete-attachment', 'publish' ),
+
+                       // Attachment with native status (rather than inheriting from parent).
+                       array( 'publish-attachment-no-parent', 'publish' ),
+                       array( 'future-attachment-no-parent', 'publish' ), // Attachments can't have future status.
+                       array( 'draft-attachment-no-parent', 'publish' ),  // Attachments can't have draft status.
+                       array( 'auto-draft-attachment-no-parent', 'auto-draft' ),
+                       array( 'trash-attachment-no-parent', 'trash' ),
+                       array( 'private-attachment-no-parent', 'private' ),
+                       array( 'delete-attachment-no-parent', false ),
+
+                       // Attachment attempting to inherit from an invalid parent number.
+                       array( 'badly-parented-attachment', 'publish' ),
+               );
+       }
+
+       /**
+        * Ensure post status resolves after trashing parent posts.
+        *
+        * @ticket 52326
+        * @dataProvider data_get_post_status_after_trashing
+        *
+        * @param string $post_to_test  The post key in self::$post_ids.
+        * @param string $post_to_trash The post key to trash then delete in self::$post_ids.
+        * @param string $expected      The expected result after trashing the post.
+        */
+       public function test_get_post_status_after_trashing( $post_to_test, $post_to_trash, $expected ) {
+               wp_trash_post( self::$post_ids[ $post_to_trash ] );
+               $this->assertSame( $expected, get_post_status( self::$post_ids[ $post_to_test ] ) );
+
+               // Now delete the post, expect publish.
+               wp_delete_post( self::$post_ids[ $post_to_trash ], true );
+               $this->assertSame( 'publish', get_post_status( self::$post_ids[ $post_to_test ] ) );
+       }
+
+       /**
+        * Data provider for test_get_post_status_after_trashing().
+        * @return array[] {
+        *     @type string $post_to_test  The post key in self::$post_ids.
+        *     @type string $post_to_trash The post key to trash then delete in self::$post_ids.
+        *     @type string $expected      The expected result after trashing the post.
+        * }
+        */
+       public function data_get_post_status_after_trashing() {
+               return array(
+                       array( 'publish-attachment', 'publish', 'publish' ),
+                       array( 'future-attachment', 'future', 'future' ),
+                       array( 'draft-attachment', 'draft', 'draft' ),
+                       array( 'auto-draft-attachment', 'auto-draft', 'auto-draft' ),
+                       array( 'private-attachment', 'private', 'private' ),
+                       array( 'delete-attachment', 'publish', 'publish' ),
+               );
+       }
+}
</ins><span class="cx" style="display: block; padding: 0 10px">Property changes on: trunk/tests/phpunit/tests/post/getPostStatus.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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