Add amount to be paid on supplier invoice

bzr revid: ced-c4bf4a6695b38c003fcc2be2a3cac57093469218

addons/account_payment/__init__.py

@@ -33,3 +33,4 @@
 import payment
 import wizard
 import account_move_line
+import account_invoice

addons/account_payment/__terp__.py

@@ -12,7 +12,8 @@
 	""",
 	"demo_xml": [],
 	"update_xml": ["payment_wizard.xml", "payment_view.xml",
-		"payment_workflow.xml", "payment_sequence.xml"],
+		"payment_workflow.xml", "payment_sequence.xml",
+		"account_invoice_view.xml",],
 	"active": False,
 	"installable": True
 }

addons/account_payment/account_invoice.py

@@ -0,0 +1,56 @@
+##############################################################################
+#
+# Copyright (c) 2007 TINY SPRL. (http://tiny.be) All Rights Reserved.
+#
+# WARNING: This program as such is intended to be used by professional
+# programmers who take the whole responsability of assessing all potential
+# consequences resulting from its eventual inadequacies and bugs
+# End users who are looking for a ready-to-use solution with commercial
+# garantees and support are strongly adviced to contract a Free Software
+# Service Company
+#
+# This program is Free Software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+#
+##############################################################################
+
+from osv import fields, osv
+from mx import DateTime
+
+class Invoice(osv.osv):
+	_inherit = 'account.invoice'
+
+	def _amount_to_pay(self, cursor, user, ids, name, args, context=None):
+		'''Return the amount still to pay regarding all the payment orders'''
+		if not ids:
+			return {}
+		res = {}
+		for invoice in self.browse(cursor, user, ids, context=context):
+			res[invoice.id] = 0.0
+			if invoice.move_id:
+				for line in invoice.move_id.line_id:
+					if not line.date_maturity or \
+							DateTime.strptime(line.date_maturity, '%Y-%m-%d') \
+							< DateTime.now():
+						res[invoice.id] += line.amount_to_pay
+		return res
+
+	_columns = {
+		'amount_to_pay': fields.function(_amount_to_pay, method=True,
+			type='float', string='Amount to be paid',
+			help='The amount which should be paid at the current date\n' \
+					'minus the amount which is already in payment order'),
+	}
+
+Invoice()

addons/account_payment/account_invoice_view.xml

@@ -0,0 +1,16 @@
+<?xml version="1.0"?>
+<terp>
+	<data>
+		<record model="ir.ui.view" id="invoice_supplier_form">
+			<field name="name">account.invoice.supplier.form.inherit</field>
+			<field name="model">account.invoice</field>
+			<field name="type">form</field>
+			<field name="inherit_id" ref="account.invoice_supplier_form"/>
+			<field name="arch" type="xml">
+				<label colspan="2" position="replace">
+					<field name="amount_to_pay"/>
+				</label>
+			</field>
+		</record>
+	</data>
+</terp>