From 04b333863cebccca6e31ee6b4e4a25a6f9461665 Mon Sep 17 00:00:00 2001
From: "uco (OpenERP)" <uco@tinyerp.co.in>
Date: Tue, 16 Mar 2010 19:04:19 +0530
Subject: [PATCH] [ADD] stock: If changing cost of a product, to take this
 valuation delta into account with a corresponding accounting entry.

bzr revid: uco@tinyerp.co.in-20100316133419-9zzx22kcxyaoosab
---
 addons/stock/__terp__.py                      |   1 +
 addons/stock/product_view.xml                 |  14 ++
 addons/stock/wizard/__init__.py               |   2 +
 .../wizard/stock_change_standard_price.py     | 132 ++++++++++++++++++
 .../stock_change_standard_price_view.xml      |  31 ++++
 5 files changed, 180 insertions(+)
 create mode 100644 addons/stock/wizard/stock_change_standard_price.py
 create mode 100644 addons/stock/wizard/stock_change_standard_price_view.xml

diff --git a/addons/stock/__terp__.py b/addons/stock/__terp__.py
index 72ebda3b16e..746a75e851f 100644
--- a/addons/stock/__terp__.py
+++ b/addons/stock/__terp__.py
@@ -48,6 +48,7 @@ Thanks to the double entry management, the inventory controlling is powerful and
         "wizard/stock_invoice_onshipping_view.xml",
         "wizard/stock_location_product_view.xml",
         "wizard/stock_inventory_line_split_view.xml",
+        "wizard/stock_change_standard_price_view.xml",
         "stock_workflow.xml",
         "stock_incoterms.xml",
         "stock_wizard.xml",        
diff --git a/addons/stock/product_view.xml b/addons/stock/product_view.xml
index 9f9dd4b6ec2..d027465c34d 100644
--- a/addons/stock/product_view.xml
+++ b/addons/stock/product_view.xml
@@ -54,6 +54,20 @@
             </field>
         </record>
 
+		<record id="view_product_standard_price_form" model="ir.ui.view">
+            <field name="name">product.product.standard.price.form.inherit</field>
+            <field name="model">product.product</field>
+            <field name="type">form</field>
+            <field name="inherit_id" ref="product.product_normal_form_view"/>
+            <field name="arch" type="xml">
+				<field name="standard_price" position="replace">
+					<group col="4" colspan="2">
+						<field name="standard_price" readonly="True"/>
+						<button name="%(action_view_change_standard_price)d" string="Change Price" type="action" icon="gtk-execute"/>
+	           		</group>
+	           	</field>
+	        </field>
+	    </record>
 
         <record id="view_normal_property_acc_form" model="ir.ui.view">
             <field name="name">product.normal.stock.acc.property.form.inherit</field>
diff --git a/addons/stock/wizard/__init__.py b/addons/stock/wizard/__init__.py
index 4d0db45aa45..fabee37650c 100644
--- a/addons/stock/wizard/__init__.py
+++ b/addons/stock/wizard/__init__.py
@@ -36,5 +36,7 @@ import stock_inventory_line_split
 import stock_invoice_onshipping
 import stock_location_product
 
+import stock_change_standard_price
+
 # vim:expandtab:smartindent:tabstop=4:softtabstop=4:shiftwidth=4:
 
diff --git a/addons/stock/wizard/stock_change_standard_price.py b/addons/stock/wizard/stock_change_standard_price.py
new file mode 100644
index 00000000000..982dd252a62
--- /dev/null
+++ b/addons/stock/wizard/stock_change_standard_price.py
@@ -0,0 +1,132 @@
+# -*- coding: utf-8 -*-
+##############################################################################
+#
+#    OpenERP, Open Source Management Solution
+#    Copyright (C) 2004-2010 Tiny SPRL (<http://tiny.be>).
+#
+#    This program is free software: you can redistribute it and/or modify
+#    it under the terms of the GNU Affero General Public License as
+#    published by the Free Software Foundation, either version 3 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 Affero General Public License for more details.
+#
+#    You should have received a copy of the GNU Affero General Public License
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+##############################################################################
+
+from osv import fields, osv
+from tools.translate import _
+
+class change_standard_price(osv.osv_memory):
+    _name = "stock.change.standard.price"
+    _description = "Change Standard Price"
+    _columns = {
+            'new_price': fields.float('Price', required=True),
+    }
+    
+    def default_get(self, cr, uid, fields, context):
+        """ 
+             @summary: To get default values for the object.
+            
+             @param self: The object pointer.
+             @param cr: A database cursor
+             @param uid: ID of the user currently logged in
+             @param fields: List of fields for which we want default values 
+             @param context: A standard dictionary 
+             
+             @return: A dictionary which of fields with values. 
+        
+        """ 
+        rec_id = context and context.get('active_id', False)
+        res = {}
+        price = self.pool.get('product.product').browse(cr, uid, rec_id)
+        res['new_price'] = price.standard_price
+        return res
+    
+    def change_price(self, cr, uid, ids, context):
+        """ 
+             @summary: Changes the Standard Price of Product. 
+                       And creates an account move accordingly.
+            
+             @param self: The object pointer.
+             @param cr: A database cursor
+             @param uid: ID of the user currently logged in
+             @param ids: List of IDs selected 
+             @param context: A standard dictionary 
+             
+             @return:  
+        
+        """
+        rec_id = context and context.get('active_id', False)
+        prod_obj = self.pool.get('product.template')
+        location_obj = self.pool.get('stock.location')
+        lot_obj = self.pool.get('stock.report.prodlots')
+        move_obj = self.pool.get('account.move')
+        move_line_obj = self.pool.get('account.move.line')
+        
+        res = self.read(cr, uid, ids[0], ['new_price'])
+        new_price = res.get('new_price',[])
+        data = prod_obj.browse(cr, uid, rec_id)
+        diff = data.standard_price - new_price
+        prod_obj.write(cr, uid, rec_id, {'standard_price': new_price})
+        
+        loc_ids = location_obj.search(cr, uid, [('account_id','<>',False),('usage','=','internal')])
+        lot_ids = lot_obj.search(cr, uid, [('location_id', 'in', loc_ids),('product_id','=',rec_id)])
+        qty = 0
+        debit = 0.0
+        credit = 0.0
+        stock_input_acc = data.property_stock_account_input.id or data.categ_id.property_stock_account_input_categ.id
+        stock_output_acc = data.property_stock_account_output.id or data.categ_id.property_stock_account_output_categ.id
+            
+        for lots in lot_obj.browse(cr, uid, lot_ids):
+            qty += lots.name
+
+        if stock_input_acc and stock_output_acc:
+            move_id = move_obj.create(cr, uid, {'journal_id': data.property_stock_journal.id})
+            if diff > 0:
+                credit = qty * diff
+                move_line_obj.create(cr, uid, {
+                                'name': data.name,
+                                'account_id': stock_input_acc,
+                                'credit': credit,
+                                'move_id': move_id
+                                })
+                for lots in lot_obj.browse(cr, uid, lot_ids):
+                    credit = lots.name * diff
+                    move_line_obj.create(cr, uid, {
+                                    'name': 'Expense',
+                                    'account_id': lots.location_id.account_id.id,
+                                    'debit': credit,
+                                    'move_id': move_id
+                                    })
+            elif diff < 0:
+                debit = qty * -diff
+                move_line_obj.create(cr, uid, {
+                                'name': data.name,
+                                'account_id': stock_output_acc,
+                                'debit': debit,
+                                'move_id': move_id
+                                })
+                for lots in lot_obj.browse(cr, uid, lot_ids):
+                    debit = lots.name * -diff
+                    move_line_obj.create(cr, uid, {
+                                    'name': 'Income',
+                                    'account_id': lots.location_id.account_id.id,
+                                    'credit': debit,
+                                    'move_id': move_id
+                                    })
+            else:
+                raise osv.except_osv(_('Warning!'),_('No Change in Price.'))
+        else:
+            raise osv.except_osv(_('Warning!'),_('No Accounts are defined for ' 
+                        'this product on its location.\nCan\'t create Move.'))
+        return {}
+
+change_standard_price()
+
+# vim:expandtab:smartindent:tabstop=4:softtabstop=4:shiftwidth=4:
diff --git a/addons/stock/wizard/stock_change_standard_price_view.xml b/addons/stock/wizard/stock_change_standard_price_view.xml
new file mode 100644
index 00000000000..38ba579848d
--- /dev/null
+++ b/addons/stock/wizard/stock_change_standard_price_view.xml
@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="utf-8"?>
+<openerp>
+    <data>
+   		<record id="view_change_standard_price" model="ir.ui.view">
+            <field name="name">Change Standard Price</field>
+            <field name="model">stock.change.standard.price</field>
+            <field name="type">form</field>
+            <field name="arch" type="xml">
+              <form string="Change Standard Price">
+              		<field name="new_price"/>
+              		<newline/>
+              		<group col="2" colspan="4">
+	              		<button special="cancel" string="Cancel" icon="gtk-cancel"/>
+	              		<button name="change_price" string="Change" type="object" icon="gtk-ok"/>
+              		</group>
+              </form>
+            </field>
+		</record>
+
+		<record id="action_view_change_standard_price" model="ir.actions.act_window">
+            <field name="name">Change Standard Price</field>
+            <field name="type">ir.actions.act_window</field>
+            <field name="res_model">stock.change.standard.price</field>
+            <field name="view_type">form</field>
+            <field name="view_mode">form</field>
+            <field name="view_id" ref="view_change_standard_price"/>
+            <field name="target">new</field>            
+        </record>
+
+    </data>
+</openerp>