Json Question posted in
Our archive of expertly curated questions and answers provides insights and solutions to common problems related to this popular data interchange format. From parsing and manipulating JSON data to integrating it with various programming languages and web services, our archive has got you covered. Start exploring today and take your JSON skills to the next level

Multiple JSON Property name on property

I have a requirement in which I must have property that can bind it’s value by "debtAmount" or "Amount"

class

I did try to have annotation from above, and it works for debtAmount but value won’t bind using "amount"

Binds on debtAMount

I want to achieve one an optional binding for one property (either by amount or debtAmount)

Tags:

2

Answers


  1. 0

    if you want multiple JSON properties during deserialization, you can use JsonConverter

    public class NewAccountRequestJsonConverter : JsonConverter<NewAccountRequest>
{
    public override NewAccountRequest Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
    {
        var newAccountRequest = new NewAccountRequest();

        while (reader.Read())
        {
            if (reader.TokenType == JsonTokenType.EndObject)
                return newAccountRequest;

            if (reader.TokenType == JsonTokenType.PropertyName)
            {
                string propertyName = reader.GetString();

                if (propertyName == "amount" || propertyName == "debtAmount")
                {
                    reader.Read();
                    newAccountRequest.Amount = reader.GetDecimal();
                }
                else
                {
                    reader.Skip();
                }
            }
        }

        throw new JsonException();
    }

    public override void Write(Utf8JsonWriter writer, NewAccountRequest value, JsonSerializerOptions options)
    {
        writer.WriteStartObject();
        writer.WriteNumber("amount", value.Amount);
        writer.WriteEndObject();
    }
}

    During Deserialize use this NewAccountRequestJsonConverter as options

     var options = new JsonSerializerOptions();
 options.Converters.Add(new NewAccountRequestJsonConverter());

 var result = JsonSerializer.Deserialize<NewAccountRequest>(jsonString, options);
    Login or Signup to reply.
  2. 0

    One approach, already presented is to put some mapping logic inside JsonConverter (inherit from it and override some logic).

    Second approach, as I see, could be mapping both fields to their respective fields Amount and debtAmount and have some method to fetch that info based on both properties, something along those lines:

    public static class Extensions
{
    public static decimal? GetAmount(this NewAccountRequest request) =>
        request.Ammount ?? request.DebtAmount;
}

    You would need to make amount fields nullable, to detect when they’re not provided at all. Or you can treat default value of 0 as "empty value", if 0 won’t be valid number.

    Login or Signup to reply.
Please signup or login to give your own answer.

Back To Top
Search