product_genre/product_genre_view.xml

<?xml version="1.0" encoding="utf-8"?>
<openerp>
    <data>
        <record id="product_genre_search_form_view" model="ir.ui.view">
            <field name="name">product.genre.search.form</field>
            <field name="model">product.genre</field>
            <field name="arch" type="xml">
                <search string="Genero">
                   <field name="name"/>
                </search>
            </field>
        </record>

        <record model="ir.ui.view" id="view_product_genre_form">
            <field name="name">product.genre.form</field>
            <field name="model">product.genre</field>
            <field name="arch" type="xml">
                <form string="Product Genre" version="7.0">
                  <group>
                      <field name="name"/>
                      <field name="reference" on_change='onchange_case(reference)'/>
                  </group>
                </form>
            </field>
        </record>

        <record model="ir.ui.view" id="view_product_genre_tree">
            <field name="name">product.genre.tree</field>
            <field name="model">product.genre</field>
            <field name="arch" type="xml">
                <tree string="product.genre">
                    <field name="name"/>
                    <field name="reference"/>
                </tree>
            </field>
        </record>

        <record id="product_search_form_view" model="ir.ui.view">
            <field name="name">product.search.form</field>
            <field name="model">product.template</field>
            <field name="inherit_id" ref="product.product_template_search_view"/>
            <field name="arch" type="xml">
                <field name="name" position="after">
                    <field name="product_genre_id"/>
                </field>
                <group string='Group by...' position="inside">
                    <filter string="Genrero" name="groupby_genre" domain="[]" context="{'group_by' : 'product_genre_id'}"/>
                </group>
            </field>
        </record>

        <record model="ir.ui.view" id="product_template_form_genre_add">
            <field name="name">product.template.product.form</field>
            <field name="model">product.template</field>
            <field name="inherit_id" ref="product.product_template_form_view" />
            <field name="arch" type="xml">
                <field name="type" position="after">
                    <field name="product_genre_id" options="{'no_create':True,'no_open':True}"/> 
                </field>
              </field>
        </record>

        <record model="ir.actions.act_window" id="action_product_genre">
            <field name="name">genre</field>
            <field name="res_model">product.genre</field>
            <field name="view_type">form</field>
            <field name="view_mode">tree,form</field>
        </record>

        <menuitem name="menu_product_genre" id="menu_product_genre" action="action_product_genre" parent="base.menu_product" string="Administrar Generos"/>
    </data>
</openerp>