如何使用 mongoDb C# 驱动程序在 MongoDb asp.net 核心应用程序中处理多种语言的排序

Question

I have a collection in which title can be in multiple language

example: If my Platform language is Spanish all the titles will be in Spanish. so how can I sort with Title

public class Collection
    {
        public string Id { get; set; }
        public string Title { get; set; }
    }

Answer 1

there are two Ways to sort,

1. Mongo Linq
2. Fluent Aggregate Syntax

for both cases you have to use AggregateOptions and Set Collation.Local to your desired local, you can toggle other flags to get your appropriate case sorting as well.

collation: {
   locale: <string>,
   caseLevel: <boolean>,
   caseFirst: <string>,
   strength: <int>,
   numericOrdering: <boolean>,
   alternate: <string>,
   maxVariable: <string>,
   backwards: <boolean>
}

For MongoDb Linq

var option = new AggregateOptions
                {
                    Collation = new Collation(searchParam.Local, false)
                };


        var list = collection.AsQueryable(option).OrderBy(x=>x.Title).
                ToListAsync(ct);

For Fluent Aggregate Syntax

 var option = new AggregateOptions
            {
                Collation = new Collation(searchParam.Local, false)
            };



  var result collection.Aggregate(option).Match(searchFilter).
                Sort(Builders<Collection>.Sort.Ascending(x=>x.Title).
                ToListAsync(ct);