Good morning,

per default, any user who belong to group HR Officer will be able to approve leave requests for anybody; this is done by setting a group in the corresponding workflow transition (from state confirm to state validate in hr.wkf.holidays).

What we will do to achieve our goal is :

• creating a new group;
• creating a function to check if the officer is about to validate is own request.
• changing the condition to validate the transition.

1/ Create the group :

• Name : Can't Approve own leaves (or whatever you need)
• Application : HR

2/ create the function :

• add the following code to the hr_holidays.py file

def is_officer_employee(self, cr, uid, ids, *args):
        for leave in self.browse(cr, uid, ids):
            if uid==leave.employee_id.user_id.id:
                return True
            else:
                return False

• delete the hr_holidays.pyc file
• restart your server with option --update=hr_holidays

3/ Modify the workflow

• The easiest way to do it is to go in Settings \ Configuration \ Worflows \ Workflows and edit hr.wkf.holidays in diagram view
• double clic on the transition
• change the condition from "not double_validation" to "not double_validation and not is_officer_employee()"
• change the Group Required from "Human Resources / Officer" to "Human Resources / Can't Approve own leaves"

4/ Test

• don't use admin user since it has special rights
• don't forget to add your user to both groups Officer and Can't Approve own leaves.

Marc.

PS: please vote if you find it helpful.