Question 117626 in Mongodb Question posted in
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Assign value to multiple variables in dotnet webapi object with mongodb

I have this simple Object class, which is filled by json content of the api controller.

[BsonId] public string Id { get; }
[JsonIgnore] public string UserId { get; set; }

I want both of these variables to access the same GUID.

  1. Making guid static does not work as I want to create a new one on every object creation

  2. I tried using a constructor, but it seems not to be supported

     UserObject()
 {
 string guid = Guid.NewGuid().ToString();
 Id = guid;
 UserId = guid;
 }

How can this be accomplished?

Tags:

2

Answers


  1. 0

    Firstly why do you need two duplicate fields?

    anyway…

    change object to:

        [BsonId]
    [BsonRepresentation(BsonType.String)]
    public Guid Id { get; set; }

    Mongo will store it as string but you can use GUID in code

    when you create object just use:

       new objectname(){
    Id = Guid.NewGuid(),
    ...
   }
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  2. 0

    If you need both fields, you could "redirect" the UserId property to read and write the value of Id, e.g.:

    [BsonId] public string Id { get; }
[JsonIgnore] public string UserId 
{ 
  get { return Id; }
  set { Id = value; }
}

    When the JSON is deserialized in the controller, the Id property is set; as the UserId property uses the value of the Id property internally, the value of the properties is the same.

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