How to secure data when changing the database architecture?

Question

Django

For example, there was a news table with fields: id, alias, title, description . After that, I decided to install multilanguage and installed django-parler. I started the migration of the news table , the fields became: id, alias and a new news_translation table was created with the fields: id, language_code, title, description, master_id .
In general, all the data that was in news disappeared after the migration.

Answer 1

If wisely, you should first perform a migration that creates an additional table, then create and perform data migration , and then perform a migration that removes fields from the original table. Or execute the dumpdata command , perform the migration, and then throw in a simple script that will fill the new table with previously saved data.