Question

如何在Mongo文档的子属性中设置整个数组？这是我当前的文档模型，是一间带房间的房子，每个房间都有家具。

public enum Furnitures{
   Table,
   Chair
}

public class House{

   public string Id {get; set;}

   public Room[] Rooms {get; set;}
}

public class Room {

    public string Id {get; set;}

    public Furniture[] Furnitures {get; set;}
}

这是我的更新方法，但不起作用：

void InteriorDesign( IMongoCollection<House> collection, string houseId, string roomId, Furniture[] newfurnitures)

{
    filterBuilder = Builders<House>().Filter;
    var filter = filterBuilder.Eq( x => x.Id, houseId) &
      filterBuilder.ElemMatch( house => house.Rooms, room => room.Id == roomId);

    updateBuilder = Builders<House>.Update;
    var update= 
    // HERE I EXPECT the NEW array replace the old one
    updateBuilder.Set( house => house.Rooms[-1].Funitures, newfurnitures);

    collection.FindOneAndUpdate(filter,update);
}

如何用另一个全新的阵列替换一个阵列的内容？

Answer 1

您的代码正确无误，但FindOneAndUpdate返回文档修改前（

FindOneAndUpdateOptions<House> options = new FindOneAndUpdateOptions<House>();
options.ReturnDocument = ReturnDocument.After;

var result = collection.FindOneAndUpdate(filter, update, options);

Mongo C＃，在嵌套属性中设置所有数组元素

1 个答案: