Bạn truyền 'search_default_ten_group_by':1 vào context của action tương ứng.

Dưới đây là ví dụ trong module fleet của Odoo 12. Định nghĩa search view với group by có tên là `groupby_vehicle`, ở context của action `fleet_vehicle_log_fuel_action` thì gọi group đó ra bằng {"search_default_groupby_vehicle" : True}

<record id='fleet_vehicle_log_fuel_view_search' model='ir.ui.view'>
        <field name="name">fleet.vehicle.log.fuel.search</field>
        <field name="model">fleet.vehicle.log.fuel</field>
        <field name="arch" type="xml">
            <search string="Vehicles Fuel Logs" >
                <field name="vehicle_id" />
                <field name="date"/>
                <field name="purchaser_id" />
                <field name="liter" />
                <field name="amount" sum="Price"/>
                <group expand="0" string="Group By">
                    <filter name="groupby_vehicle" context="{'group_by' : 'vehicle_id'}" string="Vehicle"/>
                </group>
            </search>
        </field>
    </record>

    <record id='fleet_vehicle_log_fuel_action' model='ir.actions.act_window'>
        <field name="name">Vehicles Fuel Logs</field>
        <field name="res_model">fleet.vehicle.log.fuel</field>
        <field name="view_type">form</field>
        <field name="view_mode">tree,kanban,form,graph</field>
        <field name="context">{"search_default_groupby_vehicle" : True}</field>
        <field name="help" type="html">
          <p class="o_view_nocontent_smiling_face">
            Create a new fuel log
          </p><p>
            Here you can add refuelling entries for all vehicles.
          </p>
        </field>
    </record>