odoo/addons/purchase_requisition/purchase_requisition_view.xml

<?xml version="1.0"?>
<openerp>
    <data>

    <record model="ir.ui.view" id="purchase_order_tree_inherit">
        <field name="name">purchase.order.tree.inherit</field>
        <field name="type">tree</field>
        <field name="model">purchase.order</field>
        <field name="inherit_id" ref="purchase.purchase_order_tree"/>
        <field name="arch" type="xml">
            <field name="name" position="after">
                <field name="requisition_id"/>
            </field>
        </field>
    </record>

    <record model="ir.ui.view" id="purchase_order_form_inherit">
        <field name="name">purchase.order.form.inherit</field>
        <field name="type">form</field>
        <field name="model">purchase.order</field>
        <field name="inherit_id" ref="purchase.purchase_order_form"/>
        <field name="arch" type="xml">
            <field name="partner_ref" position="after">
                <field name="requisition_id"/>
            </field>
        </field>
    </record>

    <record model="ir.ui.view" id="view_purchase_requisition_form">
        <field name="name">purchase.requisition.form</field>
        <field name="type">form</field>
        <field name="model">purchase.requisition</field>
        <field name="arch" type="xml">
            <form string="Purchase Requisition">
                <field name="name" select="1"/>
                <field name="user_id" select="1"/>
                <field name="date_start"/>
                <field name="date_end"/>
                <notebook colspan="4">
                    <page string="Products">
                        <field name="line_ids" colspan="4" nolabel="1">
                            <tree string="Products" editable="bottom">
                                <field name="product_id"/>
                                <field name="product_uom_id"/>
                                <field name="product_qty"/>
                            </tree>
                            <form string="Products" editable="bottom">
                                <field name="product_id"/>
                                <field name="product_uom_id"/>
                                <field name="product_qty"/>
                            </form>
                        </field>
                    </page>
                    <page string="Notes">
                        <field name="description" colspan="4" nolabel="1"/>
                    </page>
                    <page string="Quotations">
                        <field name="purchase_ids" nolabel="1" colspan="4"/>
                    </page>
                </notebook>
                <field name="state" select="1"/>
            </form>
        </field>
    </record>
    <record model="ir.ui.view" id="view_purchase_requisition_tree">
        <field name="name">purchase.requisition.tree</field>
        <field name="type">tree</field>
        <field name="model">purchase.requisition</field>
        <field name="arch" type="xml">
            <tree string="Purchase Requisition">
                <field name="name"/>
                <field name="user_id"/>
                <field name="date_start"/>
                <field name="date_end"/>
                <field name="state"/>
            </tree>
        </field>
    </record>
    <record model="ir.actions.act_window" id="action_purchase_requisition">
        <field name="name">Purchase Requisitions</field>
        <field name="type">ir.actions.act_window</field>
        <field name="res_model">purchase.requisition</field>
        <field name="view_type">form</field>
    </record>

    <menuitem 
        id="menu_purchase_requisition_pro_mgt" 
        parent="purchase.menu_procurement_management" 
        action="action_purchase_requisition"/>

    <record model="ir.ui.view" id="product_normal_form_view_inherit">
        <field name="name">product.form.inherit</field>
        <field name="type">form</field>
        <field name="model">product.product</field>
        <field name="inherit_id" ref="product.product_normal_form_view"/>
        <field name="arch" type="xml">
            <field name="supply_method" position="after">
                <group colspan="2" col="2" attrs="{'invisible': [('supply_method','&lt;&gt;','buy')]}">
                <field name="purchase_requisition"/>
                </group>
            </field>
        </field>
    </record>


    </data>
</openerp>