Thanks for replying.
I’ll just repeat the critical part:
Convert Attachments to Gallery:
“I have 160 posts from about 5 years ago with existing galleries generated from attachments before wordpress started using gallery item IDs.”
When I say “galleries” I don’t mean WP_galleries because they didn’t exist (using IDs) pre 3.5 They are purely the attachments with common post_parent. They were either uploaded directly to the post using “add media” or “attached” using a utility called file gallery https://wordpress.org/plugins/file-gallery/ which is not user friendly to say the least – hence the need for changing to a better system. I am currently showing either (attachments) or (acf gallery) depending on the post using an if statement.
I can see a few people have created galleries programatically from an array of image IDs (example above). I think all i need help with is generating the _gallery meta_value.
“using update_field() just not sure how to create the field programatically.”
Can you help with that?
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