Realm database. Can merging between 2 realm files ? in Flutter

MongoDB Atlas App Services & Realm Realm
1

How to merging between 2 realm files in Flutter

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Hi @zmonx_gg!
There is no automated way for merging for now. But you can open both realm files and copy the data between them. Be sure to re-create the primary keys in case there are duplicated. It will be good to make a copy of the realm files before this operation.
Here is an example:

    final configRead = Configuration.local([Product.schema], isReadOnly: true, path: r"absolute path to realm file to read");
    final realmRead = Realm(configRead);

    final configWrite = Configuration.local([Product.schema], path: r"absolute path to realm file to write");
    final realmWrite = Realm(configWrite);    

    realmWrite.write(() {
      realmWrite.addAll<Product>(realmRead.all<Product>().map((p) => Product(ObjectId(), p.name)));
    });
    realmWrite.close();
    realmRead.close();
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