#23749: migrations.RunPython broken with dbrouters.
---------------------------------+---------------------------------
Reporter: alfredperlstein | Owner: nobody
Type: Bug | Status: new
Component: Migrations | Version: 1.7
Severity: Normal | Keywords: migrations dbrouter
Triage Stage: Unreviewed | Has patch: 0
Easy pickings: 0 | UI/UX: 0
---------------------------------+---------------------------------
It seems that the migration system in 1.7 does not properly query the
dbrouter setup when a migrations.RunPython method is invoked.
Running the following command:
{{{
python manage.py migrate mycompany --noinput --traceback --database=logs
--verbosity=2
}}}
Never seems to call the router for the following migration, so as you can
see I've added code to parse sys.argv as an experiment which seems to
sort-of work, but really looks like the wrong way to do this.
{{{
# -*- coding: utf-8 -*-
from __future__ import unicode_literals
from django.db import models, migrations
from applianceUI.mycompany.dbrouter import LogRouter
import sys
def bkd_default_ports(apps, schema_editor):
db = None
for arg in sys.argv:
if '=' not in arg:
continue
print "arg: ", arg
k, v = arg.split('=', 2)
print "k: '%s', v: '%s' " % (k,v)
if k == "--database":
print arg
db = v
break
print "db is %s" % db
router = LogRouter()
Blockd = apps.get_model("mycompany", "Blockd")
if router.allow_migrate(db, Blockd) is False:
return
try:
bkd = Blockd.objects.order_by("-id")[0]
except IndexError:
bkd = Blockd.objects.create()
if bkd.bkd_ports is "":
bkd.bkd_ports = "80, 8080, 3128"
bkd.save()
class Migration(migrations.Migration):
dependencies = [
('mycompany', '0005_auto_direction_and_indexes'),
]
operations = [
migrations.RunPython(bkd_default_ports),
]
}}}
The arguments apps and schema_editor didn't give me enough data to make my
decision. How can i properly derive that the database is "logs"?
--
Ticket URL: <https://code.djangoproject.com/ticket/23749>
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