我有这个 :
{ "_id" : ObjectId("4fb4fd04b748611ca8da0d48"),"Name" : "Categories","categories" : [{ "_id" : ObjectId("4fb4fd04b748611ca8da0d46"),"name" : "SubCategory","sub-categories" : [{ "_id" : ObjectId("4fb4fd04b748611ca8da0d47"),"name" : "SubSubCategory","standards" : [] }] }] }
解决方法
您可以使用FindOneAndUpdateAsync和位置运算符执行此操作
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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