Django South错误，初始迁移 [英] Django South error with initial migration

问题描述

我已经创建了一个新的Django 1.3项目和应用程序。我向南加了我的 settings.py ，还没有运行 syncdb 。当我根据南方教程和文档执行以下命令时，我收到以下错误：

• 有什么问题导致的问题？ 更新：未正确安装South（请参阅答案）。


• South 0.7.3是否与Django 1.3兼容？

执行的命令和南方错误

$ b $在$ / Users / matthew / development / quest-projects / qexpense-tracker / quexptrkr中创建迁移目录，b

  $ python ./manage.py schemamigration qexpenses /../ quexptrkr / qexpenses / migrations'... 
在'/Users/matthew/development/quest-projects/qexpense-tracker/quexptrkr/../quexptrkr/qexpenses/migrations'中创建__init__.py。 .. 
 +添加模型qexpenses.Buyer 
 +添加模型qexpenses.Vendor 
 +添加模型qexpenses.Department 
 +添加模型qexpenses.Project 
 +添加模型qexp .PurchaseType 
 +添加的模型qexpenses.PurchaseOrder 
创建的0001_initial.py。您现在可以使用以下方式应用此迁移：./manage.py migrate qexpenses 
（qexpense-tracker）matthew @ Matthew-Rankins-MacBook-Pro：〜/ development / quest-projects / qexpense-tracker / quexptrkr 
 $ python ./manage.py migrate 
追溯（最近的最后一次调用）：
文件./manage.py，第14行在< module> 
 execute_manager（settings）
文件/Users/matthew/.virtualenvs/qexpense-tracker/lib/python2.7/site-packages/django/core/management/__init__.py，第438行，在execute_manager 
 utility.execute（）
文件/Users/matthew/.virtualenvs/qexpense-tracker/lib/python2.7/site-packages/django/core/management/__init__.py中，行379，执行
 self.fetch_command（子命令）.run_from_argv（self.argv）
文件/Users/matthew/.virtualenvs/qexpense-tracker/lib/python2.7/site-packages/ django / core / management / base.py，第191行，在run_from_argv 
 self.execute（* args，** options .__ dict__）
文件/Users/matthew/.virtualenvs/qexpense-tracker /lib/python2.7/site-packages/django/core/management/base.py，行220，执行
 output = self.handle（* args，** options）
文件 /Users/matthew/.virtualenvs/qexpense-tracker/lib/python2.7/site-packages/south/management/commands/migrate.py，第105行，处理
 ignore_ghosts = ignore_ghosts，
网络连接le/Users/matthew/.virtualenvs/qexpense-tracker/lib/python2.7/site-packages/south/migration/__init__.py，第171行，在migrate_app 
 applied = check_migration_histories（applied，delete_ghosts， ignore_ghosts）
文件/Users/matthew/.virtualenvs/qexpense-tracker/lib/python2.7/site-packages/south/migration/__init__.py，第72行，check_migration_histories 
 for h在历史中：
文件/Users/matthew/.virtualenvs/qexpense-tracker/lib/python2.7/site-packages/django/db/models/query.py，第107行，在_result_iter 
 self._fill_cache（）
文件/Users/matthew/.virtualenvs/qexpense-tracker/lib/python2.7/site-packages/django/db/models/query.py，第772行，位于_fill_cache中
 self._result_cache.append（self._iter.next（））
文件/Users/matthew/.virtualenvs/qexpense-tracker/lib/python2.7/site-packages/django/db/ models / query.py，第273行，迭代器
在compile.results_iter（）中的行：
文件/Users/matthew/.virtualenvs/qexpense-tracker/l ib / python2.7 / site-packages / django / db / models / sql / compiler.py，第680行，result_iter 
 for self.execute_sql（MULTI）中的行：
文件/ Users /matthew/.virtualenvs/qexpense-tracker/lib/python2.7/site-packages/django/db/models/sql/compiler.py，第735行，在execute_sql 
 cursor.execute（sql，params） 
文件/Users/matthew/.virtualenvs/qexpense-tracker/lib/python2.7/site-packages/django/db/backends/util.py，第34行，执行
 return self .cursor.execute（sql，params）
文件/Users/matthew/.virtualenvs/qexpense-tracker/lib/python2.7/site-packages/django/db/backends/sqlite3/base.py，行234，执行
返回Database.Cursor.execute（self，query，params）
 django.db.utils.DatabaseError：没有这样的表：south_migrationhistory 
（qexpense-tracker）matthew @ Matthew-Rankins-MacBook-Pro：〜/ development / quest-projects / qexpense-tracker / quexptrkr 
 $ 
  

配置

我正在运行OS X 10.6.7。以下是我的 pip 1.0 requirements.txt的输出。 virtualenv.org/en/latest/\"> virtualenv ：

  $ cat requirements.txt 
 Django == 1.3 
 South == 0.7.3 
 distribute == 0.6.15 
 virtualenv == 1.6 
 virtualenvwrapper == 2.6.3 
 wsgiref == 0.1。 2 
  

解决方案

Ken Cochrane的对StackOverflow问题的回答如何来我的南方迁移不适用于Django 的关键。

对于一个新的Django项目和应用程序，我必须执行以下步骤：

1. 添加南到 INSTALLED_APPS 在 settings.py 中，但是做n添加您的应用程序


2. 运行 syncdb 添加 Django 和 South 表到数据库。 South 修改 syncdb ，所以重要的是要有<您的 INSTALLED_APPS 中的href =http://south.aeracode.org/ =nofollow noreferrer>南。


3. 将应用程序添加到 INSTALLED_APPS 中 settings.py


4. 为每个应用程序运行 python manage.py schemamigration app_name --initial


5. 运行 python manage.py migrate app_name

阅读说明 - 否，所有说明

我很高兴开始使用 South ，我跳过阅读安装文档。我使用 pip install south 安装 South ，然后刚添加到我的 INSTALLED_APPS 。这是我的错误。

配置Django安装部分的安装文档状态：

一旦添加了South，您需要运行 ./ manage.py syncdb 使 South 迁移跟踪表（ South 不会为自己的模型使用迁移，由于种种原因）。

I have a new Django 1.3 project and app that I've created. I added south to my settings.py and have not yet run syncdb. When I execute the following commands per the South tutorial and documentation, I received the error shown below.

• Any thoughts on what's causing the problem? Update: Not properly installing South (see answer).
• Is South 0.7.3 compatible with Django 1.3? Update: Yes.

Commands Executed and South Error

$ python ./manage.py schemamigration qexpenses --initial
Creating migrations directory at '/Users/matthew/development/quest-projects/qexpense-tracker/quexptrkr/../quexptrkr/qexpenses/migrations'...
Creating __init__.py in '/Users/matthew/development/quest-projects/qexpense-tracker/quexptrkr/../quexptrkr/qexpenses/migrations'...
 + Added model qexpenses.Buyer
 + Added model qexpenses.Vendor
 + Added model qexpenses.Department
 + Added model qexpenses.Project
 + Added model qexpenses.PurchaseType
 + Added model qexpenses.PurchaseOrder
Created 0001_initial.py. You can now apply this migration with: ./manage.py migrate qexpenses
(qexpense-tracker)matthew@Matthew-Rankins-MacBook-Pro:~/development/quest-projects/qexpense-tracker/quexptrkr
$ python ./manage.py migrate
Traceback (most recent call last):
  File "./manage.py", line 14, in <module>
    execute_manager(settings)
  File "/Users/matthew/.virtualenvs/qexpense-tracker/lib/python2.7/site-packages/django/core/management/__init__.py", line 438, in execute_manager
    utility.execute()
  File "/Users/matthew/.virtualenvs/qexpense-tracker/lib/python2.7/site-packages/django/core/management/__init__.py", line 379, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/Users/matthew/.virtualenvs/qexpense-tracker/lib/python2.7/site-packages/django/core/management/base.py", line 191, in run_from_argv
    self.execute(*args, **options.__dict__)
  File "/Users/matthew/.virtualenvs/qexpense-tracker/lib/python2.7/site-packages/django/core/management/base.py", line 220, in execute
    output = self.handle(*args, **options)
  File "/Users/matthew/.virtualenvs/qexpense-tracker/lib/python2.7/site-packages/south/management/commands/migrate.py", line 105, in handle
    ignore_ghosts = ignore_ghosts,
  File "/Users/matthew/.virtualenvs/qexpense-tracker/lib/python2.7/site-packages/south/migration/__init__.py", line 171, in migrate_app
    applied = check_migration_histories(applied, delete_ghosts, ignore_ghosts)
  File "/Users/matthew/.virtualenvs/qexpense-tracker/lib/python2.7/site-packages/south/migration/__init__.py", line 72, in check_migration_histories
    for h in histories:
  File "/Users/matthew/.virtualenvs/qexpense-tracker/lib/python2.7/site-packages/django/db/models/query.py", line 107, in _result_iter
    self._fill_cache()
  File "/Users/matthew/.virtualenvs/qexpense-tracker/lib/python2.7/site-packages/django/db/models/query.py", line 772, in _fill_cache
    self._result_cache.append(self._iter.next())
  File "/Users/matthew/.virtualenvs/qexpense-tracker/lib/python2.7/site-packages/django/db/models/query.py", line 273, in iterator
    for row in compiler.results_iter():
  File "/Users/matthew/.virtualenvs/qexpense-tracker/lib/python2.7/site-packages/django/db/models/sql/compiler.py", line 680, in results_iter
    for rows in self.execute_sql(MULTI):
  File "/Users/matthew/.virtualenvs/qexpense-tracker/lib/python2.7/site-packages/django/db/models/sql/compiler.py", line 735, in execute_sql
    cursor.execute(sql, params)
  File "/Users/matthew/.virtualenvs/qexpense-tracker/lib/python2.7/site-packages/django/db/backends/util.py", line 34, in execute
    return self.cursor.execute(sql, params)
  File "/Users/matthew/.virtualenvs/qexpense-tracker/lib/python2.7/site-packages/django/db/backends/sqlite3/base.py", line 234, in execute
    return Database.Cursor.execute(self, query, params)
django.db.utils.DatabaseError: no such table: south_migrationhistory
(qexpense-tracker)matthew@Matthew-Rankins-MacBook-Pro:~/development/quest-projects/qexpense-tracker/quexptrkr
$ 

Configuration

I'm running OS X 10.6.7. Below is the output of pip 1.0 requirements.txt for my virtualenv:

$ cat requirements.txt 
Django==1.3
South==0.7.3
distribute==0.6.15
virtualenv==1.6
virtualenvwrapper==2.6.3
wsgiref==0.1.2

解决方案

Ken Cochrane's answer to the StackOverflow question How Come My South Migrations Doesn't Work for Django held the key.

For a new Django project and app, I had to perform the following steps:

1. Add South to INSTALLED_APPS in settings.py, but do not add your apps
2. Run syncdb to add the Django and South tables to the database. South modifies syncdb, so it's important to have South in your INSTALLED_APPS.
3. Add apps to INSTALLED_APPS in settings.py
4. Run python manage.py schemamigration app_name --initial for each app
5. Run python manage.py migrate app_name

Read the instructions—No, all of the instructions

I was so excited to start using South that I skipped reading the installation documentation. I simply installed South using pip install south and then just added it to my INSTALLED_APPS. That was my mistake.

The Configuring Your Django Installation section of the installation documentation states:

Once South is added in, you’ll need to run ./manage.py syncdb to make the South migration-tracking tables (South doesn’t use migrations for its own models, for various reasons).

这篇关于Django South错误，初始迁移的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！