commit incial

__init__.py

@@ -0,0 +1,2 @@
+# -*- encoding: utf-8 -*-
+from . import account_invoice

__openerp__.py

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+# -*- encoding: utf-8 -*-
+{
+    'name': 'Extra field invoice',
+    'version': '0.1',
+    'category': 'Product',
+    'description': """
+Fecha de envio en facturas
+==========================
+
+    """,
+    'author': 'Eiru',
+    'website': 'http://www.eiru.com.py',
+    'depends': ['base','account'],
+    'data': [
+	    'account_invoice_view.xml',
+    ],
+    'installable': True,
+}

account_invoice.py

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+# -*- encoding: utf-8 -*-
+
+from openerp import models, fields, api
+
+class account_invoice(models.Model):
+    _inherit = 'account.invoice'
+    _name = 'account.invoice'
+
+    date_of_shipping = fields.Date('Fecha de envio')

account_invoice_view.xml

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+<?xml version="1.0" encoding="utf-8"?>
+
+<openerp>
+    <data>
+        <record id="account_invoice_date_shipping_view" model="ir.ui.view">
+            <field name="name">account.invoice.date.shipping.view</field>
+            <field name="model">account.invoice</field>
+            <field name="inherit_id" ref="account.invoice_form" />
+            <field name="arch" type="xml">
+                <field name="date_invoice" position="after">
+                    <field name="date_of_shipping"/>
+                </field>
+            </field>
+        </record>
+    </data>
+</openerp>