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96 lines
3.6 KiB
Python
96 lines
3.6 KiB
Python
5 years ago
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"""
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Quick conversion command module.
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"""
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from __future__ import print_function
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from optparse import make_option
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import sys
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from django.core.management.base import BaseCommand
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from django.core.management.color import no_style
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from django.conf import settings
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from django.db import models
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from django.core import management
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from django.core.exceptions import ImproperlyConfigured
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from south.migration import Migrations
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from south.hacks import hacks
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from south.exceptions import NoMigrations
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class Command(BaseCommand):
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option_list = BaseCommand.option_list
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if '--verbosity' not in [opt.get_opt_string() for opt in BaseCommand.option_list]:
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option_list += (
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make_option('--verbosity', action='store', dest='verbosity', default='1',
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type='choice', choices=['0', '1', '2'],
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help='Verbosity level; 0=minimal output, 1=normal output, 2=all output'),
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)
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option_list += (
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make_option('--delete-ghost-migrations', action='store_true', dest='delete_ghosts', default=False,
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help="Tells South to delete any 'ghost' migrations (ones in the database but not on disk)."),
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make_option('--ignore-ghost-migrations', action='store_true', dest='ignore_ghosts', default=False,
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help="Tells South to ignore any 'ghost' migrations (ones in the database but not on disk) and continue to apply new migrations."),
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)
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help = "Quickly converts the named application to use South if it is currently using syncdb."
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def handle(self, app=None, *args, **options):
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# Make sure we have an app
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if not app:
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print("Please specify an app to convert.")
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return
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# See if the app exists
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app = app.split(".")[-1]
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try:
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app_module = models.get_app(app)
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except ImproperlyConfigured:
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print("There is no enabled application matching '%s'." % app)
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return
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# Try to get its list of models
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model_list = models.get_models(app_module)
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if not model_list:
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print("This application has no models; this command is for applications that already have models syncdb'd.")
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print("Make some models, and then use ./manage.py schemamigration %s --initial instead." % app)
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return
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# Ask South if it thinks it's already got migrations
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try:
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Migrations(app)
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except NoMigrations:
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pass
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else:
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print("This application is already managed by South.")
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return
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# Finally! It seems we've got a candidate, so do the two-command trick
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verbosity = int(options.get('verbosity', 0))
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management.call_command("schemamigration", app, initial=True, verbosity=verbosity)
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# Now, we need to re-clean and sanitise appcache
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hacks.clear_app_cache()
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hacks.repopulate_app_cache()
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# And also clear our cached Migration classes
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Migrations._clear_cache()
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# Now, migrate
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management.call_command(
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"migrate",
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app,
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"0001",
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fake=True,
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verbosity=verbosity,
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ignore_ghosts=options.get("ignore_ghosts", False),
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delete_ghosts=options.get("delete_ghosts", False),
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)
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print()
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print("App '%s' converted. Note that South assumed the application's models matched the database" % app)
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print("(i.e. you haven't changed it since last syncdb); if you have, you should delete the %s/migrations" % app)
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print("directory, revert models.py so it matches the database, and try again.")
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