delivery_report_gls.xml

<?xml version="1.0" encoding="utf-8" ?>
<odoo>
  <record model="ir.ui.view" id="delivery_report_gls_form_view">
    <field name="name">GLS: Delivery Reports</field>
    <field name="model">delivery.report.gls</field>
    <field name="arch" type="xml">
      <form string="Report">
        <group>
          <field name="report_datetime" />
          <field name="package_ids">
            <tree>
              <field name="display_name" />
              <field name="parcel_tracking" />
              <field name="shipping_weight" />
              <field name="packaging_id" />
            </tree>
          </field>
        </group>
      </form>
    </field>
  </record>
  <record model="ir.ui.view" id="delivery_report_gls_tree_view">
    <field name="name">delivery.report.gls.tree</field>
    <field name="model">delivery.report.gls</field>
    <field name="arch" type="xml">
      <tree>
        <field name="display_name" />
      </tree>
    </field>
  </record>
  <record id="delivery_report_gls_search_view" model="ir.ui.view">
        <field name="name">delivery.report.gls.search</field>
        <field name="model">delivery.report.gls</field>
        <field name="arch" type="xml">
            <search>
                <field name="carrier_id" />
                <field name="report_datetime" />
                <group expand="0" string="Group By" colspan="4" col="4">
                    <filter
                        string="Carrier"
                        name="group_by_carrier_id"
                        domain="[]"
                        context="{'group_by':'carrier_id'}"
                    />
                </group>
            </search>
        </field>
    </record>
  <record model="ir.actions.act_window" id="delivery_report_gls_act_window">
    <field name="name">GLS: Delivery Reports</field>
    <field name="res_model">delivery.report.gls</field>
    <field name="view_mode">tree,form</field>
    <field name="domain">[]</field>
    <field name="context">{}</field>
  </record>
  <menuitem
        id="delivery_report_gls_menu"
        name="GLS: Delivery Reports"
        sequence="50"
        parent="stock.menu_stock_inventory_control"
        action="delivery_report_gls_act_window"
    />
</odoo>