flectra/addons/sale/report/invoice_report_templates.xml

<?xml version="1.0" encoding="utf-8"?>
<flectra>
<template id="report_invoice_layouted" inherit_id="account.report_invoice_document">
    <xpath expr="//table/tbody/tr/td[@id='subtotal']" position="attributes">
        <attribute name="groups">!sale.group_show_price_total</attribute>
    </xpath>
    <xpath expr="//table/tbody/tr/td[@id='subtotal']" position="after">
        <td class="text-right" groups="sale.group_show_price_total">
            <span t-field="l.price_total" t-options='{"widget": "monetary", "display_currency": o.currency_id}'/>
        </td>
    </xpath>
    <xpath expr="//table" position="attributes">
        <attribute name="groups">!sale.group_sale_layout</attribute>
    </xpath>
    <xpath expr="//table" position="after">
        <t groups="sale.group_sale_layout" t-foreach="o.order_lines_layouted()" t-as="page" name="lines_layouted">
            <table class="table table-condensed">
                <thead>
                    <tr>
                        <th>Description</th>
                        <th class="text-right">Quantity</th>
                        <th class="text-right">Unit Price</th>
                        <th t-if="display_discount" class="text-right" groups="sale.group_discount_per_so_line">Disc.(%)</th>
                        <th class="text-right">Taxes</th>
                        <th class="text-right">Amount</th>
                        <th class="text-right">Total</th>
                    </tr>
                </thead>
                <tbody class="invoice_tbody">
                    <t t-foreach="page" t-as="layout_category">

                        <t t-if="layout_category_size > 1 or page_size > 1" groups="sale.group_sale_layout">
                            <tr class="active">
                                <td colspan="7" style="font-weight: bold; border-bottom: 1px solid black;">&amp;bull;
                                    <t t-esc="layout_category['name']"/>
                                </td>
                            </tr>
                        </t>

                        <!-- Lines associated -->
                        <t t-foreach="layout_category['lines']" t-as="l">
                            <tr>
                                <td><span t-field="l.name"/></td>
                                <td class="text-right">
                                    <span t-field="l.quantity"/>
                                    <span t-field="l.uom_id"  groups="product.group_uom"/>
                                </td>
                                <td class="text-right">
                                    <span t-field="l.price_unit"/>
                                </td>
                                <td t-if="display_discount" class="text-right" groups="sale.group_discount_per_so_line">
                                    <span t-field="l.discount"/>
                                </td>
                                <td class="text-right">
                                    <span t-esc="', '.join(map(lambda x: x.description or x.name, l.invoice_line_tax_ids))"/>
                                </td>
                                <td class="text-right">
                                    <span t-field="l.price_subtotal"
                                        t-options='{"widget": "monetary", "display_currency": o.currency_id}'/>
                                </td>
                                <td class="text-right" groups="sale.group_show_price_total">
                                    <span t-field="l.price_total"
                                        t-options='{"widget": "monetary", "display_currency": o.currency_id}'/>
                                </td>
                            </tr>
                        </t>

                        <t t-if="(layout_category_size > 1 or page_size > 1) and layout_category['subtotal']" groups="sale.group_sale_layout">
                            <tr class="text-right">
                                <td colspan="6">
                                    <strong>Subtotal: </strong>
                                    <t t-set="subtotal" t-value="sum(line.price_subtotal for line in layout_category['lines'])"/>
                                    <span t-esc="subtotal" t-options="{'widget': 'monetary', 'display_currency': o.currency_id}"/>
                                </td>
                            </tr>
                        </t>
                    </t>
                </tbody>
            </table>

            <t t-if="page_index &lt; page_size - 1" groups="sale.group_sale_layout">
                <p style="page-break-before:always;"> </p>
            </t>
        </t>
    </xpath>
</template>

    <template id="report_invoice_document_inherit_sale" inherit_id="account.report_invoice_document">
        <xpath expr="//div[@name='invoice_address']" position="attributes">
            <attribute name="groups">!sale.group_delivery_invoice_address</attribute>
        </xpath>
        <xpath expr="//div[@name='invoice_address']" position="before">
            <div class="col-xs-6" groups="sale.group_delivery_invoice_address">
                <div t-if="o.partner_shipping_id and (o.partner_shipping_id != o.partner_id)">
                    <strong>Shipping address:</strong>
                    <div t-field="o.partner_shipping_id"
                        t-options='{"widget": "contact", "fields": ["address", "name"], "no_marker": True}'/>
                </div>
            </div>

            <div class="col-xs-5 col-xs-offset-1" groups="sale.group_delivery_invoice_address">
                <div t-field="o.partner_id"
                    t-options='{"widget": "contact", "fields": ["address", "name"], "no_marker": True}'/>
                <div t-if="o.partner_id.vat" class="mt16"><t t-esc="o.company_id.country_id.vat_label or 'TIN'"/>: <span t-field="o.partner_id.vat"/></div>
            </div>
        </xpath>
    </template>
</flectra>