2024-03-01 21:00:03
I get an error such as Attempt to read property “ID” on null. Blubrry PowerPress is a standard plugin for distributing podcasts with WordPress. However, if you try to distribute podcasts in a specific category, a warning will appear on Feed. The solution is…
Error output to Podcast FEED
Warning: Attempt to read property “ID” on null in /extras.php on line 106
Warning: Cannot modify header information – headers already sent by (output started at /plugins/powerpress/feed-podcast.php on line 101
I get two Feed errors.
One is that I am getting a warning when trying to print the ID. This error seems to appear when you try to obtain a WordPress ID for pages other than specific pages.
The other error is that the header information cannot be confirmed. It is said that it is output on line 101.
If you fix the warning, the header information will also be correct.
As shown in the code above, add an if statement to process if it is not null.
if ($post !== null && isset($post->ID)) {
// IDを使用する処理
if( get_post_meta( $post->ID, '_sidebar_layout', true ) ){
return get_post_meta( $post->ID, '_sidebar_layout', true );
}else{
return 'right-sidebar';
}
}
By the way, when I added this null support, the warning that the header information was incorrect also disappeared. A normal podcast feed is now displayed. Now you can RSS the podcast.
However, this time, I modified inc/extras.php, but it did not work in the child theme. I wrote it directly in the parent theme, so it’s a bit of a bad method. Please let me know if there is a better way.
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