CodeIgniter - Active Record Caching for an insert query
===

Firstly a disclaimer - I am VERY new to CodeIgniter.

I am currently attempting to create a fairly basic web app that has the potential to hold sensitive(ish) data for users and their organisations. 

I had intended on storing all user entered record data in one db and all app data in another db.This data will be stored in a shared db with an user_id and org_id against all records in all tables to facilitate separation.

To minimise risk of code error and data comprimise I have researched the ability to automatically append standard 'where' statements to my active record queries using [Active Record Caching][ARC]

    $this->db->start_cache();
    $this->db->where('user_id',$_SESSION['user_id']);
    $this->db->where('org_id',$_SESSION['org_id']);
    $this->db->stop_cache();

This is brilliant and will save a lot of headaches. However, According to the documentation
 http://codeigniter.com/user_guide/database/active_record.html#caching I should also be able to use this for updates (set method):

> Note: The following statements can be cached: select, from, join, where, like, group_by, having, order_by, set

Looking at the active_record class "DB_active_rec.php" there is code present to provide caching in several methods (select, where etc)

    if ($this->ar_caching === TRUE)
    {
    ...do caching stuff

From what I can tell this seems to be missing from the set method.

I'm not sure what answer I'm after but hopfully it will be that I'm just doing it wrong!

[ARC]: http://codeigniter.com/user_guide/database/active_record.html#caching
