I have a custom field called argument. I'm trying to add it in RSS feed using the following code, but it's not working. Am I missing something?

function acf_feed($content) {  
    if(is_feed()) {  
        $post_id = get_the_ID();  
        $output = '<acfArgument>' . get_post_meta($post_id, "argument", true) . '</acfArgument>';  
        $content = $content.$output;  
    return $content;  

I added this function to function.php

Some help would be appreciated.

  • Have you tried the_content_feed? – fuxia Apr 12 '17 at 16:05

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