将元素插入Mongodb中的嵌套数组 [英] Insert element into nested array in Mongodb
本文介绍了将元素插入Mongodb中的嵌套数组的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我有这个:
{
"_id" : ObjectId("4fb4fd04b748611ca8da0d48"),
"Name" : "Categories",
"categories" : [{
"_id" : ObjectId("4fb4fd04b748611ca8da0d46"),
"name" : "SubCategory",
"sub-categories" : [{
"_id" : ObjectId("4fb4fd04b748611ca8da0d47"),
"name" : "SubSubCategory",
"standards" : []
}]
}]
}
我想使用C#驱动程序添加一个新的 SubCategory .有最佳的方法吗?
I would like to add a new SubCategory using the C# driver. Is there an optimal way to do this?
推荐答案
您可以使用FindOneAndUpdateAsync
和位置运算符
You can do this using FindOneAndUpdateAsync
and positional operator
public async Task Add(string productId, string categoryId, SubCategory newSubCategory)
{
var filter = Builders<Product>.Filter.And(
Builders<Product>.Filter.Where(x => x.Id == productId),
Builders<Product>.Filter.Eq("Categories.Id", categoryId));
var update = Builders<Product>.Update.Push("Categories.$.SubCategories", newSubCategory);
await collection.FindOneAndUpdateAsync(filter, update);
}
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