I have a tree view with certain custom fields from employees, in this tree view I have included a button in each line and I pretend that clicking on that button, should open the employee card for the selected employee.

My code is as follows:

Tree view:

```
<record model="ir.ui.view" id="informes_informe_empleados_tree">
<field name="name">informes.informe_empleados.tree</field>
<field name="model">informes.informe_empleados</field>
<field name="arch" type="xml">
    <tree>
        <button name="open_form_empleados" string="Abrir ficha" type="object" class="oe_highlight"/>
        <field name="name"/>
        <field name="employee_type_principal"/>
        <field name="begin_date"/>
        <field name="end_date"/>
    </tree>
</field>
</record>

```

And the function called by the button:

```
def open_form_empleados(self):
    return {
        'type': 'ir.actions.act_window',
        'view_type': 'form',
        'res_id': "I don't know what to put here",
        'view_mode': 'form',
        'res_model': 'hr.employee',
        'view_id': self.env.ref('per_employee_model.hr_employee_inherit').id,
        'target': 'new'
    }

```

I have made some research and I think that I have to use res\_id to indicate the employee id but I didn't manage to find the correct syntax to make it work.

I would appreciate any hint.
Thanks in advance.