Problem: when you have a DO with production data and you want to alter the schema, you can't just do this in the constructor as it will be ran every time.
npm install migratable-objectProblem: when you have a DO with production data and you want to alter the schema, you can't just do this in the constructor as it will be ran every time.
Solution: migratable-object runs each new version just once upon construction such that your schemas can always be up-to-date.
``
npm i migratable-object
`ts
import { Migratable } from "migratable-object";
@Migratable({
migrations: {
"1": ["CREATE TABLE users (id INTEGER PRIMARY KEY, name TEXT)"],
"2": ["ALTER TABLE users ADD COLUMN email TEXT"],
},
})
class MyMigratableObject extends DurableObject {
async fetch(request: Request): Promise
// Your regular request can assume the migrations were ran.
return new Response("Hello World!");
}
}
``