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How to Move Django Models Between Apps Using Migrations?

Patricia Arquette
Release: 2024-11-07 08:05:03
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How to Move Django Models Between Apps Using Migrations?

Moving Models Between Django Apps with Migrations

Organizing models into separate Django app structures can enhance project maintainability and structure. While previous attempts using South may have proved difficult, Django 1.7's migration system offers a seamless solution.

Procedure

Using migrations.SeparateDatabaseAndState allows you to concurrently modify the database and update the state of the model:

  1. Removing from the Old App:

    • Create an empty migration for the old app using makemigrations.
    • Define the SeparateDatabaseAndState operation in the migration to rename the table, delete the model from the old app's state, and add the model to the new app's state.
  2. Adding to the New App:

    • Copy the model file to the new app.
    • Create a migration for the new app using makemigrations.
    • Enclose the existing CreateModel operation in a SeparateDatabaseAndState operation, ensuring the migration depends on the old app's migration.

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