Javascript code to get topic id from post id

[gvp9000]

Javascript code to get topic id# from post id#.
Is it possible ?

For example if I know the post id = 1234 the function must return the topic id = 21.

[Brf]

You wouldn't be able to do that in javascript. Javascript runs in the user's webbrowser, which does not have access to the database. You would have to run some PHP code on the server side to read the database. If you gave us some context, we could offer a better solution.

[warmweer]

I'm not sure about this but IIRC cloning a topic does not create new post_ids, only a new topic_id.

If I'm correct, then in that case a post_id would not point to a unique topic_id.

[gvp9000]

Thank you

[Brf]

I'm not sure about this but IIRC cloning a topic does not create new post_ids, only a new topic_id.

If I'm correct, then in that case a post_id would not point to a unique topic_id.

That is not true. The posts table post_id is a unique primary key, and is also an auto-increment field. If you clone a topic, the copied posts would automatically get new ids.

[warmweer]

I'm not sure about this but IIRC cloning a topic does not create new post_ids, only a new topic_id.

If I'm correct, then in that case a post_id would not point to a unique topic_id.

That is not true. The posts table post_id is a unique primary key, and is also an auto-increment field. If you clone a topic, the copied posts would automatically get new ids.

You're right: I just tested it now but should immediately have realised that I was wrong as in the past (before I discovered) javiexin's copy post extension) I had to clone a topic to create a cloned post.