Marten Query with Enum Value

marten.cs

// See https://aka.ms/new-console-template for more information

using Marten;
using Weasel.Core;

async Task StoreUser(DocumentStore documentStore)
{
    await using var session = documentStore.OpenSession();
    var newUser = new User
    {
        UserName = "khalid.abuhakmeh",
        Role = Roles.Admin
    };

    session.Store(newUser);
    await session.SaveChangesAsync();
}

using var store = DocumentStore.For(cfg =>
{
    cfg.Connection("Server=127.0.0.1;Port=5432;Database=marten;User Id=postgres;Password=Pass123!;");
    cfg.AutoCreateSchemaObjects = AutoCreate.All;
});

await StoreUser(store);

await using var session = store.LightweightSession();
var user = session
    .Query<User>()
    .First(u => u.Role == Roles.Admin);

Console.WriteLine($"{user.UserName} is an {user.Role}");

public class User
{
    public int Id { get; set; }
    public Roles Role { get; set; }
    public string UserName { get; set; } = "";
}

public enum Roles
{
    User,
    Admin
}