How to add automatically keyword to taxonomies when a post published, and assign them to the post
Question
How to add automatically keyword to taxonomies when a post published, and assign them to the post for example i have in my post edition, a custom meta box, when you complete this input, a function should generate a group of keywords in background , and i want these keywords are automatically adding to a specific custom taxonomy in that post when it published, this is possible? i try with
wp_set_object_terms
and nothing working great, thx
sorry for my worst english
Solution
You would use the save_post hook, in your hooked function use wp_insert_term as described here:
http://codex.wordpress.org/Function_Reference/wp_insert_term
Then use wp_set_object_terms on the post to assignt he taxonomy term you just created as follows:
http://codex.wordpress.org/Function_Reference/wp_set_object_terms
for example:
function my_save($post_id) {
wp_insert_term( 'bannanapost', 'fruit');
wp_set_object_terms( $post_id, 'bannanapost', 'fruit', true )
}
add_action('save_post','my_save');
The above code, placed in functions.php of your theme, would add the term 'bannanapost' to each post when saved, in the fruit taxonomy