const { SchemaField, ObjectField, NumberField, StringField, DocumentIdField, ArrayField, } = foundry.data.fields; export class GroupDataModel extends foundry.abstract.TypeDataModel { static defineSchema() { return { name: new StringField(), inventory: new SchemaField({ quantity: new NumberField(), item: new DocumentIdField(Item) }), groupId: new DocumentIdField(Actor), characters: new ArrayField( new DocumentIdField(Actor) ), settings: new ObjectField(), } } _onCreate(data, options, userId) { super._onCreate(data, options, userId); Folder.implementation.createDocuments([{name: data.name, type: "Actor"}]).then(( folder ) => { this.parent.update({"system.groupId": folder[0]._id}); }) } }