diff --git a/addons/purchase/purchase.py b/addons/purchase/purchase.py
index 6fa752a9f01..0989548d1d1 100644
--- a/addons/purchase/purchase.py
+++ b/addons/purchase/purchase.py
@@ -280,6 +280,27 @@ class purchase_order(osv.osv):
fiscal_position = supplier.property_account_position and supplier.property_account_position.id or False
return {'value':{'pricelist_id': pricelist, 'fiscal_position': fiscal_position}}
+ def invoice_open(self, cr, uid, ids, context=None):
+ mod_obj = self.pool.get('ir.model.data')
+ act_obj = self.pool.get('ir.actions.act_window')
+
+ result = mod_obj.get_object_reference(cr, uid, 'account', 'action_invoice_tree2')
+ id = result and result[1] or False
+ result = act_obj.read(cr, uid, [id], context=context)[0]
+ inv_ids = []
+ for po in self.browse(cr, uid, ids, context=context):
+ inv_ids+= [invoice.id for invoice in po.invoice_ids]
+ if not inv_ids:
+ raise osv.except_osv(_('Error!'), _('Please create Invoices.'))
+ #choose the view_mode accordingly
+ if len(inv_ids)>1:
+ result['domain'] = "[('id','in',["+','.join(map(str, inv_ids))+"])]"
+ else:
+ res = mod_obj.get_object_reference(cr, uid, 'account', 'invoice_supplier_form')
+ result['views'] = [(res and res[1] or False, 'form')]
+ result['res_id'] = inv_ids and inv_ids[0] or False
+ return result
+
def view_invoice(self, cr, uid, ids, context=None):
'''
This function returns an action that display existing invoices of given sale order ids. It can either be a in a list or in a form view, if there is only one invoice to show.
diff --git a/addons/purchase/stock_view.xml b/addons/purchase/stock_view.xml
index 4a7c5dfca36..38db2998d54 100644
--- a/addons/purchase/stock_view.xml
+++ b/addons/purchase/stock_view.xml
@@ -62,7 +62,7 @@
-