Understanding Migrations in Django - PowerPoint PPT Presentation

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Understanding Migrations in Django

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In Django, the fake option in the migrate command is used to mark migrations as applied without actually running them. – PowerPoint PPT presentation

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Title: Understanding Migrations in Django


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Understanding Migrations in Django
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  • Django's migration system is a powerful tool for
    managing changes to your database schema over
    time. However, there are instances where you may
    need more control over the migration process,
    especially when dealing with complex scenarios or
    debugging issues. This is where fake migrations
    come into play. In this article, we'll explore
    what fake migrations are, why they are useful,
    and provide practical examples to demonstrate
    their usage in Django projects.
  • Understanding Migrations in Django Before we
    dive into fake migrations, let's review the
    basics of Django migrations. Migrations are
    Python files generated by Django's makemigrations
    command, which represent changes to your models.
    These changes can include creating new models,
    altering existing ones, or deleting them. When
    you run migrate, Django applies these migrations
    to the database, ensuring that your database
    schema matches the structure defined in your
    Django models.
  • https//erpsolutions.oodles.io/developer-blogs/Und
    erstanding-Migrations-in-Django/

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  • What are Fake Migrations? Fake migrations allow
    you to mark migrations as applied to the database
    without actually executing the SQL commands
    associated with them. This can be useful in
    scenarios where you want to skip applying certain
    migrations temporarily or resolve dependency
    issues between migrations.
  • Example 1 Resolving Dependency Issues Suppose
    you have two migrations, 0001_initial.py and
    0002_auto_20220318.py, where 0002_auto_20220318.py
    depends on 0001_initial.py. However, you realize
    that you need to make changes to 0001_initial.py
    before applying 0002_auto_20220318.py. In this
    case, you can use a fake migration to mark
    0001_initial.py as applied without executing it
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