partner-contact/base_location/views/better_zip.xml

<?xml version="1.0" encoding="UTF-8"?>
<openerp>
  <data>

    <record model="ir.ui.view" id="better_zip_form">
      <field name="name">res.better.zip.form</field>
      <field name="model">res.better.zip</field>
      <field name="arch" type="xml">
        <form string="ZIP" version="7.0">
          <group col="4">
            <field name="name"/>
            <field name="code"/>
            <field name="city"/>
            <field name="priority"/>
            <field name="state_id"/>
            <field name="country_id"/>
          </group>
        </form>
      </field>
    </record>

    <record model="ir.ui.view" id="better_zip_tree">
      <field name="name">res.better.zip.tree</field>
      <field name="model">res.better.zip</field>
      <field name="arch" type="xml">
        <tree string="ZIP">
          <field name="name"/>
          <field name="code"/>
          <field name="city"/>
          <field name="state_id"/>
          <field name="country_id"/>
          <field name="priority"/>
        </tree>
      </field>
    </record>

    <record id="view_better_zip_filter" model="ir.ui.view">
      <field name="name">res.better.zip.select</field>
        <field name="model">res.better.zip</field>
        <field name="arch" type="xml">
        <search string="Search city">
          <field name="name"/>
          <field name="code"/>
          <field name="city"/>
          <field name="state_id"/>
          <field name="country_id"/>
	            <group expand="0" string="Group By">
	                <filter string="State" domain="[]" context="{'group_by':'state_id'}"/>
	                <filter string="Country" domain="[]" context="{'group_by':'country_id'}"/>
	            </group>
        </search>
      </field>
    </record>
	 
    <record id="action_zip_tree" model="ir.actions.act_window">
      <field name="name">Cites/locations Management</field>
      <field name="res_model">res.better.zip</field>
      <field name="view_type">form</field>
      <field name="view_mode">tree,form</field>
      <field ref="better_zip_tree" name="view_id"/>
      <field name="search_view_id" ref="view_better_zip_filter"/>
    </record>

    <menuitem
        name="Cities/Locations Management"
        id="zip_base"
        parent="base.menu_localisation"
        action="action_zip_tree"
        />
  </data>
</openerp>