I am looking to modify report_picking adding this:
<div class="col-xs-6">
<div><span>Transportista: </span><span t-field="o.carrier_id"/></div>
<div><span>Seguimiento: </span><span t-field="o.carrier_tracking_ref"/></div>
</div>
To the original report, so the final code is as follows:
<?xml version="1.0"?>
<t t-name="stock.report_picking">
<t t-call="report.html_container">
<t t-foreach="docs" t-as="o">
<t t-call="report.external_layout">
<div class="page">
<div class="row"><div class="col-xs-4 pull-right">
<img t-att-src="'/report/barcode/?type=%s&value=%s&width=%s&height=%s' % ('Code128', o.name, 600, 100)" style="width:300px;height:50px;"/>
</div></div>
<div class="row">
<div class="col-xs-6">
<div t-if="o.picking_type_id.code=='incoming' and o.partner_id">
<span><strong>Supplier Address:</strong></span>
</div>
<div t-if="o.picking_type_id.code=='internal' and o.partner_id">
<span><strong>Warehouse Address:</strong></span>
</div>
<div t-if="o.picking_type_id.code=='outgoing' and o.partner_id">
<span><strong>Customer Address:</strong></span>
</div>
</div>
<div class="col-xs-6">
<div>
<div><strong>Envío:</strong></div>
</div>
</div>
</div>
<div class="row">
<div class="col-xs-6">
<div t-if="o.partner_id" name="partner_header">
<div t-field="o.partner_id" t-field-options="{"widget": "contact", "fields": ["address", "name", "phone", "fax"], "no_marker": true}"/>
<p t-if="o.partner_id.vat">VAT: <span t-field="o.partner_id.vat"/></p>
</div>
</div>
<div class="col-xs-5 col-xs-offset-1">
<div t-if="o.move_lines and o.move_lines[0].partner_id and o.move_lines[0].partner_id.id != o.partner_id.id">
<span><strong>Delivery Address:</strong></span>
<div t-field="o.move_lines[0].partner_id" t-field-options="{"widget": "contact", "fields": ["address", "name", "phone", "fax"], "no_marker": true}"/>
</div>
<div t-if="o.picking_type_id.code != 'internal' and (not o.move_lines or not o.move_lines[0].partner_id) and o.picking_type_id.warehouse_id.partner_id">
<span><strong>Warehouse Address:</strong></span>
<div t-field="o.picking_type_id.warehouse_id.partner_id" t-field-options="{"widget": "contact", "fields": ["address", "name", "phone", "fax"], "no_marker": true}"/>
</div>
</div>
<div class="col-xs-6">
<div><span>Transportista: </span><span t-field="o.carrier_id"/></div>
<div><span>Seguimiento: </span><span t-field="o.carrier_tracking_ref"/></div>
</div>
</div>
<h2>
<span t-field="o.picking_type_id"/>:
<span t-field="o.name"/>
</h2>
<table class="table table-condensed">
<thead>
<tr>
<th><strong>Order (Origin)</strong></th>
<th><strong>State</strong></th>
<th><strong>Commitment Date</strong></th>
<th name="td_sched_date_h"><strong>Scheduled Date</strong></th>
</tr>
</thead>
<tbody>
<tr>
<td>
<span t-field="o.origin"/>
</td>
<td>
<span t-field="o.state"/>
</td>
<td>
<span t-field="o.date"/>
</td>
<td name="td_sched_date">
<span t-field="o.min_date"/>
</td>
</tr>
</tbody>
</table>
<br/>
<br/>
<table class="table table-condensed" t-if="not o.pack_operation_ids">
<thead>
<tr>
<th><strong>Product</strong></th>
<th class="text-right"><strong>Quantity</strong></th>
<t t-if="o.picking_type_id.code != 'incoming'"><th><strong>Source</strong></th></t>
<th><strong>Barcode</strong></th>
<t t-if="o.picking_type_id.code != 'outgoing'"><th><strong>Destination</strong></th></t>
</tr>
</thead>
<tbody>
<tr t-foreach="o.move_lines" t-as="move">
<t t-if="(o.state != 'partially_available') or (move.reserved_availability > 0)">
<td><span t-field="move.product_id"/></td>
<td class="text-right">
<t t-if="o.state == 'partially_available'">
<span t-field="move.reserved_availability"/> <span t-field="move.product_id.uom_id" groups="product.group_uom"/>
</t>
<t t-if="o.state != 'partially_available'">
<span t-field="move.product_uom_qty"/> <span t-field="move.product_uom" groups="product.group_uom"/>
</t>
</td>
<t t-if="o.picking_type_id.code != 'incoming'"><td><span t-field="move.location_id"/></td></t>
<td>
<span t-if="move.product_id and move.product_id.ean13">
<img t-att-src="'/report/barcode/?type=%s&value=%s&width=%s&height=%s' % ('EAN13', move.product_id.ean13, 600, 100)" style="width:300px;height:50px"/>
</span>
</td>
<t t-if="o.picking_type_id.code != 'outgoing'"><td><span t-field="move.location_dest_id"/></td></t>
</t>
</tr>
</tbody>
</table>
<table class="table table-condensed" t-if="o.pack_operation_ids">
<thead>
<tr>
<th><strong>Product</strong></th>
<th class="text-right"><strong>Quantity</strong></th>
<t t-if="o.picking_type_id.code != 'incoming'"><th><strong>Source</strong></th></t>
<th><strong>Barcode</strong></th>
<t t-if="o.picking_type_id.code != 'outgoing'"><th><strong>Destination</strong></th></t>
</tr>
</thead>
<tbody>
<tr t-foreach="o.pack_operation_ids" t-as="pack_operation">
<td><span t-field="pack_operation.product_id"/>
<t t-if="not pack_operation.product_id and pack_operation.package_id"><span t-field="pack_operation.package_id"/></t></td>
<td class="text-right"><span t-field="pack_operation.product_qty"/> <span t-field="pack_operation.product_uom_id" groups="product.group_uom"/></td>
<t t-if="o.picking_type_id.code != 'incoming'"><td><span t-field="pack_operation.location_id"/>
<span t-if="pack_operation.package_id">:</span>
<span t-field="pack_operation.package_id"/>
<span t-if="pack_operation.lot_id">:</span>
<span t-field="pack_operation.lot_id"/>
</td>
</t>
<td>
<span t-if="pack_operation.lot_id">
<img t-att-src="'/report/barcode/?type=%s&value=%s&width=%s&height=%s' % ('Code128', pack_operation.lot_id.name, 600, 100)" style="width:300px;height:50px"/>
</span>
<span t-if="pack_operation.product_id and not pack_operation.lot_id and pack_operation.product_id.ean13">
<img t-att-src="'/report/barcode/?type=%s&value=%s&width=%s&height=%s' % ('EAN13', pack_operation.product_id.ean13, 600, 100)" style="width:300px;height:50px"/>
</span>
<span t-if="pack_operation.package_id and not pack_operation.product_id">
<img t-att-src="'/report/barcode/?type=%s&value=%s&width=%s&height=%s' % ('Code128', pack_operation.package_id.name, 600, 100)" style="width:300px;height:50px"/>
</span>
</td>
<t t-if="o.picking_type_id.code != 'outgoing'"><td><span t-field="pack_operation.location_dest_id"/>
<span t-if="pack_operation.result_package_id">:</span>
<span t-field="pack_operation.result_package_id"/>
</td></t>
</tr>
</tbody>
</table>
</div>
</t>
</t>
</t>
</t>
How can I add those two lines in a module? (using the GUI is straightforward).