Which function shall be called while doing Group by in Odoo?

Question

When i am doing Search using Listview, search function shall be called and i have over written it to pass some extra parameters. But, while Grouping the Values how can i pass the Extra Parameters?

So, which function i have to over write to add some parameters while Grouping?

Answer 1

Over-write read_group function of odoo/openerp which shall be called while doing Group By and use domain parameter using which search condition shall be sent while doing grouping.