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1. futurepocket
   Member
   Posted 1 year ago #

   Hi,
   Since I am using a theme that requires a Custom Image Field in each and every post, I need to make sure my authors put one in. The thing is, I want to have a default image in case they don't put it in (a custom field automatically added ONLY IF one with the same name doesn't already exist).

   I saw the code online to auto-add, but does that code add the custom field even if one already exists there? That's what I don't want, I want to add a custom field IF AND ONLY IF a custom field with the same name doesn't already exist. Any ideas?

2. futurepocket
   Member
   Posted 1 year ago #

   add_action('publish_page', 'add_custom_field_automatically');
   add_action('publish_post', 'add_custom_field_automatically');
   function add_custom_field_automatically($post_ID) {
   global $wpdb;
   if(!wp_is_post_revision($post_ID)) {
   add_post_meta($post_ID, 'field-name', 'custom value', true);
   }
   }

   That is the code I basically need, but I am a complete beginner at PHP, so where and how would I add an "if" command in there to only add the custom field if one doesn't exist already? Thanks!

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