wp_insert_post() function doesn`t set the taxonomies from AJAX call

[WeddyWood]

wp_insert_post() function doesn`t set the taxonomies from AJAX call because of:

<?php
if ( current_user_can( $taxonomy_obj->cap->assign_terms ) ) {
        wp_set_post_terms( $post_ID, $tags, $taxonomy );
}

current_user_can() does not work with AJAX

Reference: wp-includes/post.php:3357

[joyously]

current_user_can() does not work with AJAX

That's a broad statement (AJAX is generic). If you use the REST API, you have to do authentication differently than if you use an ajax_action hook. The ajax_action hooks will only work from the WP site because of the authentication cookies. Those ajax_action hooks can (and do in core admin pages) use current_user_can().

Could you explain a test case?

[ocean90]

Hello @WeddyWood, welcome to WordPress Trac!

Thanks for your report, this issue is already tracked in #19373.

[WeddyWood]

Replying to joyously:

current_user_can() does not work with AJAX

That's a broad statement (AJAX is generic). If you use the REST API, you have to do authentication differently than if you use an ajax_action hook. The ajax_action hooks will only work from the WP site because of the authentication cookies. Those ajax_action hooks can (and do in core admin pages) use current_user_can().

Could you explain a test case?

I expressed inaccurately. Function current_user_can() does not work (return false) when parent function wp_insert_post() was called by not-logged-in user. through 'wp_ajax_nopriv' hook