Angularfire 文档参考集合

Question

    return this.orderCollection.snapshotChanges().pipe(
      map(actions =>
        actions.map(a => {
          const data = a.payload.doc.data() as Order;
          const id = a.payload.doc.id;
          return { id, ...data };
        })
      )
    );
  }

现在如何在 angularfire2 中获取文档参考数据？

Answer 1

您需要单独加载引用的文档。所以像：

customerRef = a.payload.doc.get("customerId");
customerRef.get().then((doc) => {
  console.log(doc.data());
})