How-To Guides

How to start with an existing database schema

If you already have a project with an existing schema, you can easily integrate Miggy:

1. Run miggy makemigrations.

2. Review and adjust the generated migration if necessary.

3. Run miggy migrate –fake to mark the migration as applied.

How to merge migrations

Over time, the number of migration files in a project may grow, which can gradually increase the time required to generate new migrations. In such cases, you can merge all migrations into a single file using the miggy merge. command. This command merge all existing migrations into one and updates the migratehistory table accordingly to reflect the merged state.

Unfortunately, using this command is not always possible, as projects often contain custom migrations—whether they add data or are written with custom SQL because Miggy’s capabilities may be limited. In such cases, migrations can be merged manually:

1. Delete all migration files.

2. Run miggy makemigrations.

3. Review and adjust the generated migration if necessary.

4. Manually update the migratehistory table. It should contain only the migration created in step 2