CODEWITHSUNDEEP
c#
BaptX
BaptX

Reputation: 589

c# shorthand for if not null in property new

I have a method like this :

public string GenerateJwtToken(User user, Transaction? transaction)
{
    // generate token that is valid for time from app.config
    var tokenHandler = new JwtSecurityTokenHandler();
    var key = Encoding.ASCII.GetBytes(_appSettings.Secret);

    var tokenDescriptor = new SecurityTokenDescriptor
    {
        Subject = new ClaimsIdentity(new[] {
            new Claim(Constants.JWT_CLAIMS_USER_ID, user.Id.ToString()),

        }),
        IssuedAt = DateTime.UtcNow,
        Issuer = Constants.JWT_ISSUER,
        Expires = DateTime.UtcNow.AddSeconds(_appSettings.JwtTokenExpirationTime),
        SigningCredentials = new SigningCredentials(new SymmetricSecurityKey(key), SecurityAlgorithms.HmacSha256Signature)
    };
    // Some Stuff
}

Is it possible to add a claim if transaction is not null ? I'm looking for the equivalent of :

var tokenDescriptor = new SecurityTokenDescriptor
{
    Subject = new ClaimsIdentity(new[] {
        new Claim(Constants.JWT_CLAIMS_USER_ID, user.Id.ToString()),
        HERE --> transaction != null ? new Claim(Constants.JWT_CLAIMS_TRANSACTION_GUID : /*DO NOTHING */, transaction.Guid.ToString()),
    }),
    IssuedAt = DateTime.UtcNow,
    Issuer = Constants.JWT_ISSUER,
    Expires = DateTime.UtcNow.AddSeconds(_appSettings.JwtTokenExpirationTime),
    SigningCredentials = new SigningCredentials(new SymmetricSecurityKey(key), SecurityAlgorithms.HmacSha256Signature)
};

It seems to be a simple question, but I don't know the answer...

Upvotes: 0

Views: 72

Answers (1)

David
David

Reputation: 218828

Not everything has to be shortened to a single line.

Create your list of Claim objects:

var claims = new List<Claim> { new Claim(Constants.JWT_CLAIMS_USER_ID, user.Id.ToString()) };

Conditionally append to it:

if (transaction != null)
    claims.Add(new Claim(Constants.JWT_CLAIMS_TRANSACTION_GUID));

Use the list:

var tokenDescriptor = new SecurityTokenDescriptor
{
    Subject = new ClaimsIdentity(claims.ToArray()),
    //...
};

Upvotes: 1

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