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" groups="base.group_extended"/>
            </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" groups="base.group_extended"/>
            </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">
                <group colspan="4" col="6">
                    <field name="name"/>
                    <field name="user_id"/>
                    <field name="exclusive"/>
                    <field name="date_start"/>
                    <field name="date_end"/>
                    <field name="origin"/>
					<field name="company_id" groups="base.group_multi_company" widget="selection"/>                    
                </group>

                <notebook colspan="4">
                    <page string="Products">
                        <field name="line_ids" colspan="4" nolabel="1">
                            <tree string="Products" editable="bottom">
                                <field name="product_id" on_change="onchange_product_id(product_id,product_uom_id)"/>
                                <field name="product_qty"/>
                                <field name="product_uom_id"/>
                            </tree>
                            <form string="Products" editable="bottom">
                                <field name="product_id" />
								<field name="product_qty"/>
                                <field name="product_uom_id" />
								<field name="company_id" groups="base.group_multi_company" widget="selection"/>
                            </form>

                        </field>
					<separator colspan="4"/>
	                <group col="8" colspan="4">
	                    <field name="state" select="1" readonly ="1"/>
						<button name="tender_in_progress" states="draft" string="Confirm" type="object" icon="gtk-apply" />
	                    <button name="tender_reset" states="done,cancel" string="Reset to Draft" type="object" icon="gtk-convert" />
						<button name="tender_done" states="in_progress" string="Done" type="object" icon="gtk-jump-to" />
						<button name="tender_cancel" states="draft,in_progress" string="Cancel" type="object" icon="gtk-cancel" />
	                </group>                        
                    </page>
                    <page string="Notes">
                        <field name="description" colspan="4" nolabel="1"/>
                    </page>
                    <page string="Quotations">
                     	<group col="8" colspan="4">
                    	<button name="%(action_purchase_requisition_partner)d" string="Requests for Quotation" type="action" icon="gtk-execute" />
                    	 <label colspan="6"  string=""/>
                    	  </group>
                    	<field name="purchase_ids" nolabel="1" colspan="4"/>
                   </page>
                </notebook>
            </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="purchase_ids"/>
                <field name="date_start"/>
                <field name="date_end"/>
                <field name="origin"/>
                <field name="state"/>
            </tree>
        </field>
    </record>

	<record id="view_purchase_requisition_filter" model="ir.ui.view">
            <field name="name">purchase.requisition.list.select</field>
            <field name="model">purchase.requisition</field>
            <field name="type">search</field>
            <field name="arch" type="xml">
                <search string="Search Purchase Requisition">
                 <group col='10' colspan='4'>
                    <filter icon="terp-purchase" string="Current" domain="[('state','=','draft,in_progress')]" separator="1" help="Current Purchaes Requisition"/>
					<filter icon="terp-purchase" string="Done" domain="[('state','=','done')]" separator="1" help="Current Purchaes Requisition"/>                    
                    <separator orientation="vertical"/>
                    <field name="name" string="Requisition Reference"/>
                    <field name="purchase_ids"/>
                    <field name="user_id" widget="selection">
                        <filter icon="terp-partner" domain="[('create_uid','=',uid)]" help="My Requisition "/>
                    </field>
                    <field name="exclusive"/>
                    <field name="company_id" groups="base.group_multi_company" widget="selection"/>
                </group>
                <newline/>
                  <group expand="1" string="Group By..." colspan="4" col="10">
                    <filter string="State" icon="terp-sale" domain="[]" context="{'group_by':'state'}"/>
  					<separator orientation="vertical"/>                    
                    <filter string="Date Start" icon="terp-purchase" domain="[]" context="{'group_by':'date_start'}"/>
                    <filter string="Date End" icon="terp-purchase" domain="[]" context="{'group_by':'date_end'}"/>
                    <separator orientation="vertical"/>                    
					<filter string="Origin" icon="terp-purchase" domain="[]" context="{'group_by':'origin'}"/>
                </group>
              </search>
            </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>
		<field name="view_mode">tree,form</field>
        <field name="search_view_id" ref="view_purchase_requisition_filter"/>
    </record>

    <menuitem
        id="menu_purchase_requisition_pro_mgt"
        sequence="0"
        groups="base.group_extended"
        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>