From 66b43f9b274d599a4e911fa0c0060acbb72b1e5e Mon Sep 17 00:00:00 2001
From: Holger Brunn <hbrunn@therp.nl>
Date: Tue, 6 Dec 2016 14:22:53 +0100
Subject: [PATCH] [ADD] migrate from 8.0 if possible in init hook

---
 account_payment_mode/__init__.py    |  1 +
 account_payment_mode/__openerp__.py |  1 +
 account_payment_mode/hooks.py       | 26 ++++++++++++++++++++++++++
 3 files changed, 28 insertions(+)
 create mode 100644 account_payment_mode/hooks.py

diff --git a/account_payment_mode/__init__.py b/account_payment_mode/__init__.py
index cde864bae..4826db065 100644
--- a/account_payment_mode/__init__.py
+++ b/account_payment_mode/__init__.py
@@ -1,3 +1,4 @@
 # -*- coding: utf-8 -*-
 
 from . import models
+from .hooks import pre_init_hook
diff --git a/account_payment_mode/__openerp__.py b/account_payment_mode/__openerp__.py
index 90c9e4378..6ad583fed 100644
--- a/account_payment_mode/__openerp__.py
+++ b/account_payment_mode/__openerp__.py
@@ -19,5 +19,6 @@
         'views/account_journal.xml',
     ],
     'demo': ['demo/payment_demo.xml'],
+    'pre_init_hook': 'pre_init_hook',
     'installable': True,
 }
diff --git a/account_payment_mode/hooks.py b/account_payment_mode/hooks.py
new file mode 100644
index 000000000..7b67dd107
--- /dev/null
+++ b/account_payment_mode/hooks.py
@@ -0,0 +1,26 @@
+# -*- coding: utf-8 -*-
+# © 2016 Therp BV <http://therp.nl>
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+
+
+def pre_init_hook(cr):
+    migrate_from_8(cr)
+
+
+def migrate_from_8(cr):
+    """If we're installed on a database which has the payment_mode table
+    from 8.0, move its table so that we use the already existing modes"""
+    cr.execute("SELECT 1 FROM pg_class WHERE relname = 'payment_mode'")
+    if not cr.fetchone():
+        return
+    try:
+        from openupgradelib.openupgrade import rename_models
+        rename_models(cr, [('payment.mode', 'account.payment.mode')])
+    except ImportError:
+        cr.execute('ALTER TABLE payment_mode RENAME TO account_payment_mode')
+        cr.execute('ALTER SEQUENCE payment_mode_id_seq '
+                   'RENAME TO account_payment_mode_id_seq')
+    cr.execute(
+        'ALTER TABLE account_payment_mode '
+        'RENAME COLUMN journal TO fixed_journal_id'
+    )