Sample: "Exploring the world of Realm with embedded objects in React

Can anyone share specific instances of utilizing realm with React Native and TypeScript while incorporating embedded objects?

Typically, you can supply a partial object containing properties to be sent to realm for CRUD operations:

realm.write(() => {
  realm.create<SomeSchemaObject>(
    SchemaObject.schema.name,
    {
        id: 1,
        someListType: ??? // where someListType represents an embedded schema object.
    },
    UpdateMode.Modified
  )
}

When using typescript and supplying an array of partial properties for the embedded object, I encounter type errors. Despite extensive searching through the Realm-JS repository and documentation, examples featuring the use of TypeScript and embedded objects are nowhere to be found.

typescriptreact-nativerealm

Answer №1

After some exploration on my own, I discovered the solution before seeking help. In my application, I don't directly use realm entities; instead, I convert them to DTOs during processing. All my DTOs adhere to an interface that includes a method for retrieving the property object needed for insert/update operations. Previously, I mistakenly defined the return object as Partial when it should have been RealmInsertionModel.

I hope this explanation benefits others facing a similar issue.

toRealmInsertionModel(): RealmInsertionModel<UserSessionEntity> {
    // Within my schema, UserSessionEntity contains an embedded list of ScopeEntity.
    const entities: RealmInsertionModel<ScopeEntity>[] = this.scopes.map(
      scopeDto => scopeDto.toRealmInsertionModel(),
    );

    return {
      id: this.id,
      accessToken: this.accessToken,
      refreshToken: this.refreshToken,
      idToken: this.idToken,
      tokenType: this.tokenType,
      scopes: entities,
    };
}

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