Rename comment into note because there is now a comment type

purchase.py

@@ -8,6 +8,7 @@ import datetime
 from trytond.netsvc import LocalService
 from trytond.report import CompanyReport
 from trytond.wizard import Wizard
+from trytond.sql_db import table_handler
 
 _STATES = {
     'readonly': "state != 'draft'",
@@ -801,10 +802,7 @@ class PurchaseLine(OSV):
             }, on_change_with=['type', 'quantity', 'unit_price',
                 '_parent_purchase.currency'])
     description = fields.Text('Description', size=None, required=True)
-    comment = fields.Text('Comment',
-            states={
-                'invisible': "type != 'line'",
-            })
+    note = fields.Text('Note')
     taxes = fields.Many2Many('account.tax', 'purchase_line_account_tax',
             'line', 'tax', 'Taxes', domain=[('parent', '=', False)],
             states={
@@ -831,6 +829,17 @@ class PurchaseLine(OSV):
                     'an "account_expense" default property!',
             })
 
+    def _auto_init(self, cursor, module_name):
+        super(PurchaseLine, self)._auto_init(cursor, module_name)
+        table = table_handler(cursor, self._table, self._name, module_name)
+
+        # Migration from 1.0 comment change into note
+        if 'comment' in table.table:
+            cursor.execute('UPDATE "' + self._table + '" ' \
+                    'SET note = comment')
+            cursor.execute('ALTER TABLE "' + self._table + '" ' \
+                    'DROP COLUMN comment')
+
     def default_type(self, cursor, user, context=None):
         return 'line'
 

purchase.xml

@@ -612,9 +612,9 @@ this repository contains the full copyright notices and license terms. -->
                             <separator name="taxes" colspan="4"/>
                             <field name="taxes" colspan="4"/>
                         </page>
-                        <page string="Comment" id="comment">
-                            <separator name="comment" colspan="4"/>
-                            <field name="comment" colspan="4"
+                        <page string="Notes" id="notes">
+                            <separator name="note" colspan="4"/>
+                            <field name="note" colspan="4"
                                 spell="_parent_purchase.party_lang"/>
                         </page>
                     </notebook>