eiru_payment_term_configurator/views/views.xml

<?xml version="1.0" encoding="UTF-8"?>
<openerp>
	<data>
		<!-- sale.order -->
        <record id="views_eiru_payment_term_configurator" model="ir.ui.view">
            <field name="name">eiru.payment.term.configurator</field>
            <field name="model">sale.order</field>
            <field name="inherit_id" ref="sale.view_order_form"/>
            <field name="arch" type="xml">
				<field name="date_order" position="after">
                    <field name="date_quota" required="1"/>
                </field>
                <field name="order_line" position="before">
                    <div class="payment_term_configurator" attrs="{'invisible': [('state','not in',['draft','sent'])]}"></div>
                </field>
                <field name="order_line" position="before">
                    <div class="payment_term_discont" attrs="{'invisible': [('state','not in',['draft','sent'])]}"></div>
                </field>
            </field>
        </record>
		<!-- purchase.order -->
		<record id="views_eiru_payment_term_configurator_purchase" model="ir.ui.view">
			<field name="name">views_eiru_payment_term_configurator.purchase</field>
			<field name="model">purchase.order</field>
			<field name="inherit_id" ref="purchase.purchase_order_form"/>
			<field name="arch" type="xml">
				<field name="date_order" position="after">
					<field name="date_quota" required="1"/>
				</field>
				<field name="order_line" position="before">
					<div class="purchase-payment-term-configurator" attrs="{'invisible': [('state','not in',['draft','sent'])]}"></div>
				</field>
			</field>
		</record>
	</data>
</openerp>