ent/examples/migration

Versioned Migration Example

The full reference example for https://entgo.io/docs/versioned-migrations#create-a-migration-files-generator.

Migration directory

Versioned migration files exists under ent/migrate/migrations and follows the golang-migrate format.

Changes to the Ent schema

1. Change the ent/schema.

2. Run go generate ./ent

Generate new versioned migration

1. Create a dev-database container if there is no one.

docker run --name migration --rm -p 3306:3306 -e MYSQL_ROOT_PASSWORD=pass -e MYSQL_DATABASE=test -d mysql

2. Generate a new versioned migration file:

go run -mod=mod ent/migrate/main.go <name>

Run migration linting

atlas migrate lint \
  --dev-url="mysql://root:pass@localhost:3306/test" \
  --dir="file://ent/migrate/migrations" \
  --latest=1