How do I handle migrations in React Native Realm?

How do I handle migrations in React Native Realm?

To handle migrations in React Native Realm, you need to define a migration function that specifies how to transform your old schema to the new one.

Can you give me an example of a migration function?

Sure! Here's a simple example:

const migration = (oldRealm, newRealm) => {
    const oldObjects = oldRealm.objects('MyObject');
    const newObjects = newRealm.objects('MyObject');

    for (let i = 0; i < oldObjects.length; i++) {
        newObjects[i].newProperty = oldObjects[i].oldProperty;
    }
};

This function copies data from the old schema to the new one.

What if I need to delete a property during migration?

If you need to delete a property, you can simply omit it from the new schema. Realm will handle the removal automatically during the migration.