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Is it possible to add a custom meta box for the images of the media library?How I achieve this using add_post_meta() function?

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Sure! Just follow this guide and make these changes:

And of course, make sure to customize the example code to your specific needs.

  • I will read your suggested links and try to apply the concept. After the implementation, how I will obtain the associated custom data of a metabox of an attachment? – sialfa Nov 4 '19 at 14:31
  • You can get it using the get_post_meta() function. It's used in the guide, under the Getting values section. – Cas Dekkers Nov 4 '19 at 14:46
  • I've read the Getting value section, I need to pass the post id to the function, will the post id work instead of the attachement id that is related to the images? – sialfa Nov 4 '19 at 17:50
  • Attachments are stored in the same database table, wp_posts by default, so you can use the ID of the attachment as the $post_id parameter. – Cas Dekkers Nov 5 '19 at 13:17

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