1
我添加了一對列和字段到我的Django模型，並能運行命令南部如：沒有任何錯誤添加在南一欄給出了錯誤
$ python manage.py schemamigration [model_name] --auto
$ python manage.py migrate
罰款本地機器。然而，當我切換到服務器，拉所有的新移民+代碼文件和材料那裏，這樣做：
$蟒蛇manage.py遷移
它給了我下面粘貼下面的錯誤。我使用版本MySQL 5.6（與InnoDB），如果這將是一個有用的信息。我已經嘗試過在網上查找和Stackoverflow來找出如何解決這個問題（例如，this post非常接近幫助我理解問題，但並不完全是我所面臨的......），但我似乎無法找到解決這個問題。
我現在應該怎麼做才能成功進行遷移？
[[email protected]: t4s (develop)]$ python manage.py migrate
Running migrations for accounts:
- Migrating forwards to 0012_auto__add_timelimit.
> accounts:0005_auto__add_twilioaccount
> accounts:0006_auto__add_field_twilioaccount_created_at__add_field_twilioaccount_crea
> accounts:0007_auto__del_twilioaccount
> accounts:0008_auto__add_twilioaccount
> accounts:0009_auto__chg_field_twilioaccount_created_by__add_unique_twilioaccount_cre
> accounts:0010_auto__del_twilioaccount
> accounts:0011_auto__add_twilioaccount
> accounts:0012_auto__add_timelimit
- Loading initial data for accounts.
Installed 0 object(s) from 0 fixture(s)
Running migrations for smsmessages:
- Nothing to migrate.
- Loading initial data for smsmessages.
Installed 0 object(s) from 0 fixture(s)
Running migrations for organizations:
- Nothing to migrate.
- Loading initial data for organizations.
Installed 0 object(s) from 0 fixture(s)
Running migrations for campaigns:
- Migrating forwards to 0003_auto__add_field_taskqueue_twilio.
> campaigns:0003_auto__add_field_taskqueue_twilio
! Error found during real run of migration! Aborting.
! Since you have a database that does not support running
! schema-altering statements in transactions, we have had
! to leave it in an interim state between migrations.
! You *might* be able to recover with: - no dry run output for delete_foreign_key() due to dynamic DDL, sorry
= ALTER TABLE `campaigns_taskqueue` DROP COLUMN `twilio_id` CASCADE; []
! The South developers regret this has happened, and would
! like to gently persuade you to consider a slightly
! easier-to-deal-with DBMS (one that supports DDL transactions)
! NOTE: The error which caused the migration to fail is further up.
Error in migration: campaigns:0003_auto__add_field_taskqueue_twilio
Traceback (most recent call last):
File "manage.py", line 10, in <module>
execute_from_command_line(sys.argv)
File "/usr/lib/python2.6/site-packages/django/core/management/__init__.py", line 399, in execute_from_command_line
utility.execute()
File "/usr/lib/python2.6/site-packages/django/core/management/__init__.py", line 392, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/usr/lib/python2.6/site-packages/django/core/management/base.py", line 242, in run_from_argv
self.execute(*args, **options.__dict__)
File "/usr/lib/python2.6/site-packages/django/core/management/base.py", line 285, in execute
output = self.handle(*args, **options)
File "/usr/lib64/python2.6/site-packages/south/management/commands/migrate.py", line 111, in handle
ignore_ghosts = ignore_ghosts,
File "/usr/lib64/python2.6/site-packages/south/migration/__init__.py", line 220, in migrate_app
success = migrator.migrate_many(target, workplan, database)
File "/usr/lib64/python2.6/site-packages/south/migration/migrators.py", line 254, in migrate_many
result = migrator.__class__.migrate_many(migrator, target, migrations, database)
File "/usr/lib64/python2.6/site-packages/south/migration/migrators.py", line 329, in migrate_many
result = self.migrate(migration, database)
File "/usr/lib64/python2.6/site-packages/south/migration/migrators.py", line 133, in migrate
result = self.run(migration, database)
File "/usr/lib64/python2.6/site-packages/south/migration/migrators.py", line 114, in run
return self.run_migration(migration, database)
File "/usr/lib64/python2.6/site-packages/south/migration/migrators.py", line 8
migration_function()
File "/usr/lib64/python2.6/site-packages/south/migration/migrators.py", line 6
return (lambda: direction(orm))
File "/opt/dev/t4sfeature/t4sdev/t4s/campaigns/migrations/0003_auto__add_field
keep_default=False)
File "/usr/lib64/python2.6/site-packages/south/db/generic.py", line 47, in _ca
return func(self, table, *args, **opts)
File "/usr/lib64/python2.6/site-packages/south/db/generic.py", line 418, in ad
self.execute(sql)
File "/usr/lib64/python2.6/site-packages/south/db/generic.py", line 282, in ex
cursor.execute(sql, params)
File "/usr/lib/python2.6/site-packages/django/db/backends/util.py", line 69, i
return super(CursorDebugWrapper, self).execute(sql, params)
File "/usr/lib/python2.6/site-packages/django/db/backends/util.py", line 53, i
return self.cursor.execute(sql, params)
File "/usr/lib/python2.6/site-packages/django/db/backends/mysql/base.py", line
return self.cursor.execute(query, args)
File "/usr/lib64/python2.6/site-packages/MySQLdb/cursors.py", line 175, in exe
if not self._defer_warnings: self._warning_check()
File "/usr/lib64/python2.6/site-packages/MySQLdb/cursors.py", line 89, in _war
warn(w[-1], self.Warning, 3)
_mysql_exceptions.Warning: TIME/TIMESTAMP/DATETIME columns of old format have been upgraded
當我再次嘗試運行python manage.py migrate時，我得到了一個稍微不同的錯誤，如下所示。
[[email protected]: t4s (develop)]$ python manage.py migrate
Running migrations for accounts:
- Nothing to migrate.
- Loading initial data for accounts.
Installed 0 object(s) from 0 fixture(s)
Running migrations for smsmessages:
- Nothing to migrate.
- Loading initial data for smsmessages.
Installed 0 object(s) from 0 fixture(s)
Running migrations for organizations:
- Nothing to migrate.
- Loading initial data for organizations.
Installed 0 object(s) from 0 fixture(s)
Running migrations for campaigns:
- Migrating forwards to 0003_auto__add_field_taskqueue_twilio.
> campaigns:0003_auto__add_field_taskqueue_twilio
FATAL ERROR - The following SQL query failed: ALTER TABLE `campaigns_taskqueue` ADD COLUMN `twilio_id` integer NULL;
The error was: (1060, "Duplicate column name 'twilio_id'")
! Error found during real run of migration! Aborting.
! Since you have a database that does not support running
! schema-altering statements in transactions, we have had
! to leave it in an interim state between migrations.
! You *might* be able to recover with: - no dry run output for delete_foreign_key() due to dynamic DDL, sorry
= ALTER TABLE `campaigns_taskqueue` DROP COLUMN `twilio_id` CASCADE; []
! The South developers regret this has happened, and would
! like to gently persuade you to consider a slightly
! easier-to-deal-with DBMS (one that supports DDL transactions)
! NOTE: The error which caused the migration to fail is further up.
Error in migration: campaigns:0003_auto__add_field_taskqueue_twilio
Traceback (most recent call last):
File "manage.py", line 10, in <module>
execute_from_command_line(sys.argv)
File "/usr/lib/python2.6/site-packages/django/core/management/__init__.py", line 399, in execute_from_command_line
utility.execute()
File "/usr/lib/python2.6/site-packages/django/core/management/__init__.py", line 392, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/usr/lib/python2.6/site-packages/django/core/management/base.py", line 242, in run_from_argv
self.execute(*args, **options.__dict__)
File "/usr/lib/python2.6/site-packages/django/core/management/base.py", line 285, in execute
output = self.handle(*args, **options)
File "/usr/lib64/python2.6/site-packages/south/management/commands/migrate.py", line 111, in handle
ignore_ghosts = ignore_ghosts,
File "/usr/lib64/python2.6/site-packages/south/migration/__init__.py", line 220, in migrate_app
success = migrator.migrate_many(target, workplan, database)
File "/usr/lib64/python2.6/site-packages/south/migration/migrators.py", line 254, in migrate_many
result = migrator.__class__.migrate_many(migrator, target, migrations, database)
File "/usr/lib64/python2.6/site-packages/south/migration/migrators.py", line 329, in migrate_many
result = self.migrate(migration, database)
File "/usr/lib64/python2.6/site-packages/south/migration/migrators.py", line 133, in migrate
result = self.run(migration, database)
File "/usr/lib64/python2.6/site-packages/south/migration/migrators.py", line 114, in run
return self.run_migration(migration, database)
File "/usr/lib64/python2.6/site-packages/south/migration/migrators.py", line 84, in run_migration
migration_function()
File "/usr/lib64/python2.6/site-packages/south/migration/migrators.py", line 60, in <lambda>
return (lambda: direction(orm))
File "/opt/dev/t4sfeature/t4sdev/t4s/campaigns/migrations/0003_auto__add_field
keep_default=False)
File "/usr/lib64/python2.6/site-packages/south/db/generic.py", line 47, in _ca
return func(self, table, *args, **opts)
File "/usr/lib64/python2.6/site-packages/south/db/generic.py", line 418, in ad
self.execute(sql)
File "/usr/lib64/python2.6/site-packages/south/db/generic.py", line 282, in ex
cursor.execute(sql, params)
File "/usr/lib/python2.6/site-packages/django/db/backends/util.py", line 69, i
return super(CursorDebugWrapper, self).execute(sql, params)
File "/usr/lib/python2.6/site-packages/django/db/backends/util.py", line 53, i
return self.cursor.execute(sql, params)
File "/usr/lib/python2.6/site-packages/django/db/utils.py", line 99, in __exit
six.reraise(dj_exc_type, dj_exc_value, traceback)
File "/usr/lib/python2.6/site-packages/django/db/backends/util.py", line 53, i
return self.cursor.execute(sql, params)
File "/usr/lib/python2.6/site-packages/django/db/backends/mysql/base.py", line
return self.cursor.execute(query, args)
File "/usr/lib64/python2.6/site-packages/MySQLdb/cursors.py", line 173, in exe
self.errorhandler(self, exc, value)
File "/usr/lib64/python2.6/site-packages/MySQLdb/connections.py", line 36, in
raise errorclass, errorvalue
django.db.utils.OperationalError: (1060, "Duplicate column name 'twilio_id'")
介紹最新南遷有關campaigns模型文件（名爲0003_auto__add_field_taskqueue_twilio.py）具有這樣的：
u'campaigns.taskqueue': {
'Meta': {'object_name': 'TaskQueue'},
'campaign': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['campaigns.Campaign']"}),
'created_at': ('django.db.models.fields.DateTimeField', [], {'auto_now_add': 'True', 'blank': 'True'}),
'created_by': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['auth.User']"}),
'groups': ('django.db.models.fields.related.ManyToManyField', [], {'to': u"orm['organizations.Group']", 'symmetrical': 'False'}),
u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
'launch_time': ('django.db.models.fields.DateTimeField', [], {}),
'status': ('django.db.models.fields.CharField', [], {'default': "'pending'", 'max_length': '30'}),
'twilio': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['accounts.TwilioAccount']", 'null': 'True'})
},
至於我記得，我只是說此行的campaigns/models.py文件：
class TaskQueue(models.Model):
campaign = models.ForeignKey(Campaign)
launch_time = models.DateTimeField()
twilio = models.ForeignKey(TwilioAccount, null=True) # new line recently added
created_at = models.DateTimeField(auto_now_add=True)
created_by = models.ForeignKey(User)
and TwilioAccount型號是這樣的：
class TwilioAccount(models.Model):
name = models.CharField(max_length=50, blank=True)
number = models.CharField(max_length=16, blank=True)
sid = models.CharField(max_length=100, blank=True)
token = models.CharField(max_length=100, blank=True)
created_at = models.DateTimeField(auto_now_add=True)
非常感謝您的回答。