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Post Thumbnails: Prevent post thumbnail previews from spilling into other images. 

After [38118], when previewing a page with a secondary loop, all post
thumbnails would be filtered to display the post thumbnail for the
page being previewed. This ensures `_wp_preview_post_thumbnail_filter()`
is only applied if the `$post_id` of the post meta being filtered is
equal to the post or page being previewed.

Props swisspidy, joemcgill.
Fixes #37697.

git-svn-id: https://develop.svn.wordpress.org/trunk@38433 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Joe McGill 2016-08-29 12:24:09 +00:00
parent 6b23bbb92b
commit 142fefb269
2 changed files with 38 additions and 7 deletions
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8
src/wp-includes/revision.php
View File

@ -594,7 +594,13 @@ function _wp_preview_post_thumbnail_filter( $value, $post_id, $meta_key ) {
return $value;
}
if ( empty( $_REQUEST['_thumbnail_id'] ) || $post->ID != $post_id || '_thumbnail_id' != $meta_key || 'revision' == $post->post_type ) {
if ( empty( $_REQUEST['_thumbnail_id'] ) ||
empty( $_REQUEST['preview_id'] ) ||
$post->ID != $post_id ||
'_thumbnail_id' != $meta_key ||
'revision' == $post->post_type ||
$post_id != $_REQUEST['preview_id']
) {
return $value;
}

37
tests/phpunit/tests/post/thumbnails.php
View File

@ -237,16 +237,41 @@ class Tests_Post_Thumbnail_Template extends WP_UnitTestCase {
$GLOBALS['post'] = self::$post;
$_REQUEST['_thumbnail_id'] = self::$attachment_id;
$_REQUEST['preview_id'] = self::$post->ID;
$result = _wp_preview_post_thumbnail_filter( '', self::$post->ID, '_thumbnail_id' );
$this->assertEquals( self::$attachment_id, $result );
// Clean up.
$GLOBALS['post'] = $old_post;
unset( $_REQUEST['_thumbnail_id'] );
if ( null === $old_post ) {
unset( $GLOBALS['post'] );
} else {
$GLOBALS['post'] = $old_post;
}
unset( $_REQUEST['preview_id'] );
$this->assertEquals( self::$attachment_id, $result );
}
/**
* @ticket 37697
*/
function test__wp_preview_post_thumbnail_filter_secondary_post() {
$old_post = isset( $GLOBALS['post'] ) ? $GLOBALS['post'] : null;
$secondary_post = self::factory()->post->create( array(
'post_stauts' => 'publish',
)
);
$GLOBALS['post'] = self::$post;
$_REQUEST['_thumbnail_id'] = self::$attachment_id;
$_REQUEST['preview_id'] = $secondary_post;
$result = _wp_preview_post_thumbnail_filter( '', self::$post->ID, '_thumbnail_id' );
// Clean up.
$GLOBALS['post'] = $old_post;
unset( $_REQUEST['_thumbnail_id'] );
unset( $_REQUEST['preview_id'] );
$this->assertEmpty( $result );
}
/**