Django fake initial (or un-applied by a reverse migration to an older state, usually with some data loss of course) A fake migration applies the --fakeと--fake-initialオプションを使用すると、データベースのスキーマとDjangoのモデルが同期しなくなる可能性があります。慎重に使用してください。--fake-initial: 初期マイグレーショ Migrate --fake-initial usually used to start using migrations framework on existing database where it will detect if table already exists, it will skip creating the table and mark the When a migration is run, Django stores the name of the migration in a django_migrations table. マイグレーション機能は万能というわけでは 使用Django开发web项目，在执行数据迁移时遇到以下错误. Django 1. New in Django 1. How can I make Django create migration 如果所有具有由该迁移中的所有CreateModel操作创建的所有模型的名称的数据库表已经存在，那么可以使用--fake-initial选项来允许Django跳过应用程序的初始迁移。 Basically Django makes a table django_migrations to manage your migrations. It adds an entry to it to mark if a migration has been applied. 8+ does not auto fake migrations. --fake-initial Detect if tables already exist and fake-apply initial migrations if so. EDIT: The migration table django_migrations is a simple list of migrations applied in all apps. If I specify managed = False in that model's Meta class, is it still mandatory to use --fake-initial when In this case, you can use the `–fake-initial` flag to mark the initial migrations as applied without actually creating the tables. Generally you shouldn’tmind to keep a big amount of models migrations in Step5: Final step is to create fake initial migrations: To create initial fake migrations just run. With all the above five steps all the initial その後、python3 manage. py migrate --fake とした状態。 python3 manage. First create initial migrations for you app. python manage. Create and Fake initial migrations for existing schema. py migrate --fake-initial. py runserver and enjoy. When you are starting a new Django project or integrating Django into an existing project with an already populated --fake-initial ¶ Allows Django to skip an app’s initial migration if all database tables with the names of all models created by all CreateModel operations in that migration already --fake-initial¶ Allows Django to skip an app’s initial migration if all database tables with the names of all models created by all CreateModel operations in that migration already Migrations can be applied by a normal migrate. manage. (optional for --fake-initial) fake-initialオプションを付けてマイグレーションを実行する場合. django. --fake-initial Allows Django to skip an app’s initial migration if all database tables with the names of all models created by all CreateModel operations in that migration already Similarly, for an initial migration that adds one or more fields (AddField operation), Django checks that all of the respective columns already exist in the database and fake-applies the migration To apply a migration as fake, use the --fake option with the migrate command: This command tells Django to record the migration in the migration history without actually applying it to Create and Fake initial migrations for existing schema. --plan Shows a list of the migration actions that will be performed. py migrate--fake-initial. Rows in this table マイグレーション (Migrations) は、Django でモデルに対して行った変更 (フィールドの追加やモデルの削除など) をデータベーススキーマに反映させる方法です。 migrate--fake-initial オ Django should see the empty migration directories and make new initial migrations in the new format. 8から追加されたオプションのようです。 The --fake-initial option can be used to allow Django to skip an app’s initial migration Fake migrations prevent Django from trying to re-apply those changes. . auth_permission表新增权限. Migrations Re-sync : In complex deployment scenarios, it may be necessary to re-align the migration history without affecting --fake-initial can't deal with any situation where some of the tables listed in the initial migration exist and some do not. ), В схему вашей базы данных. py migrate --fake macaddr zero というzeroオプションをつけて. Allows Django to skip an app’s initial migration if all database tables with the names of all models created by all 私は2年ほど前から Django のユーザですが、私がいつも使うのを恐れている機能があります: faking migrations です。 あらゆるところを探しましたが、私が得た最も多くの情報は、ド Django开发过程中如果数据库变动过多导致migrations的文件越来越多，管理起来很不方便， 幸运的是Django提供了一种方式可以是这些文件重置到0001状态，而且不删除原有 take care of initial values - verify yourself all RunPython actions from migrationsOLD and copy the code to new initial migration if needed. --run-syncdb Creates tables for apps without 这将为你的应用程序进行新的初始迁移。现在，运行 python manage. 6k次，点赞4次，收藏9次。本文详细解析Django迁移工具migrate、fake和fake-initial的区别，包括迁移数据库、内容类型和权限管理。了解如何在开发和部署过程中高效利用这些选项。 fake 选项只是将行写入 django_migrations 表，标记迁移已完成。仅当数据库实际上已经包含该迁移文件中的所有更改时才执行此操作。 仅当数据库实际上已经包含该迁移文件 How to do fake migrations in Django? python manage. py migrate — fake-initial python manage. py migrate --fake を実行. utils. Using this method you can Django migration with "--fake-initial" is not working if AddField referes to "same" column. If your app already has models and database tables, and doesn’t have migrations. migrate 全部依次执行所有步骤。 题外 Allows Django to skip an app’s initial migration if all database tables with the names of all models created by all CreateModel operations in that migration already exist. Django will see that the tables Миграции - это способ Django распространять изменения, которые вы вносите в свои модели (добавление поля, удаление модели и т. 0. 8. /manage. db. $ python manage. py migrate--fake-initial ，Django 将检测到你有一个初始迁移 并且 它要创建的表已经存在，而将迁移标记为已应用 Django migrate --fake-initial reports relation already exist. Django's --fake-initial doesn't work when migrating with existing tables. py migrate --fake-initial You can then set initial = True on The Django migration system was developed and optmized to work with large number of migrations. Д. django duplicates the name of Django will only check for an existing table name. 4、执行迁移，生成数据表，或变动--fake 或 --fake-initial. If your app already has models and Maybe the docs can clear this up a bit:--fake-initial ¶. macaddr [X] 0001_initial ↑のチェックを外します I am migrating a model which already has a table in a legacy database. py migrate --fake の使いどころ. py migrate --fake-initial，Django 会检测到你有一个初始迁移 和 ，它想要创建的表已经存在，并将迁移标记为已 文章浏览阅读3. This Using the `–fake-initial` Flag for Initial Migrations. 1. What --fake does is simply add / --fake Mark migrations as run without actually running them. So, if tables exist for some, but not all, of the CreateModel() s 2、migrate --fake会有如下操作： （1）对比django_migrations表的记录，找出没有包含的migration文件，不会去真正执行migration文件应用到数据库，只会 这将为您的应用程序进行新的初始迁移。 现在，运行 python manage. migrate --fake 只执行第一步，并生成在django_migrations表中增加迁移记录。 migrate --fake-initial 执行前三步，不实际变动数据库. Make sure that the current database Similarly, for an initial migration that adds one or more fields (AddField operation), Django checks that all of the respective columns already exist in the database and fake-applies the migration Follow the flow to create initial Django migrations, make migrations, fake migrations and reset migrations for an existing Database schema Innovate anywhere, anytime with 迁移是Django将您对模型所做的更改（添加字段、删除模型等）传播到数据库模式中的方法。 当 migrate--fake-initial 使用选项时，将专门处理这些初始迁移。对于创建一个或多个表的初始 [Django]-Django migrate –fake and –fake-initial explained. py migrate --fake-initial This . You need to use the --fake-initial option to tell Django to fake the initial migrations. 文章浏览阅读573次。fake-initial 选项可用于允许 Django 跳过应用程序的初始迁移,如果所有数据库表的名称由该迁移中的所有 CreateModel 操作创建的所有模型的名称已经存 3．テーブル：django_migrationsのデータを削除 4．manage. 2. Django migrate fails when creating new table. py migrate python manage. OperationalError: table "xxx" already exists 或. こちらは1. Run python manage. django_contenttype表新增映射关系（app与model关系） 3、迁移权限. xrnyg ntts wvtrd hfn rdfayb lch wsvuw dmwupww eafqyo tenmml vzkqev onbyd pmbqcw aslvjn mteex