Batch update ignore custom type conversion (Npgsql)

[heggi]

I use custom converter for convert from enum to string and back (storing enum in DB as string)

public class CustomEnumConverter<TEnum> : ValueConverter<TEnum, string> where TEnum : struct, Enum
{
    public CustomEnumConverter(ConverterMappingHints mappingHints = null)
        : base(toStringExpr, toEnumExpr, mappingHints) { }

    private readonly static Expression<Func<TEnum, string>> toStringExpr = x => ToDbString(x);
    private readonly static Expression<Func<string, TEnum>> toEnumExpr = x => ToEnum(x);

    public static string ToDbString(TEnum tEnum)
    {
        var enumType = tEnum.GetType();
        var memInfo = enumType.GetMember(tEnum.ToString());

        var attr = (EnumMemberAttribute)memInfo[0]
            .GetCustomAttributes(typeof(EnumMemberAttribute), false)
            .FirstOrDefault();

        return attr.Value;
    }

    public static TEnum ToEnum(string value)
    {
        foreach (var name in Enum.GetNames<TEnum>()) {
            var attr = typeof(TEnum)
                .GetRuntimeField(name)
                .GetCustomAttribute<EnumMemberAttribute>(true);
            if (attr != null && attr.Value == value) {
                return Enum.Parse<TEnum>(name);
            }
        }

        return default;
    }
}

When I use standard EFCore functions (such as context.Sess.Add(entity)), all works fine (enums stored as string),
but batchUpdate save to DB int value of enum member, not string.

    db.BatchUpdate<Entities.Sess>()
          .Set(m => m.Status, m => Enums.SessStatus.Stopreq) // '1' in DB, must be 'stopreq'
          .Execute()

My Enum and Entity

public enum SessStatus
{
    [EnumMember(Value = "active")]
    Active,

    [EnumMember(Value = "stopreq")]
    Stopreq,

    [EnumMember(Value = "stopping")]
    Stopping,
}

public class Sess
{
    ...
    public SessStatus Status { get; set; }
    ...
}

public class AppDbContext : DbContext
{
    protected override void OnModelCreating(ModelBuilder modelBuilder)
    {
        modelBuilder
            .Entity<Sess>()
            .Property(m => m.Status)
            .HasConversion(new Converters.CustomEnumConverter<SessStatus>());

        base.OnModelCreating(modelBuilder);
    }
}

[yangzhongke]

Thanks for you feedback, and I will check it later.

[yangzhongke]

Bug fixed, please update to the latest NuGet package.
Please let me know if it solves your issue.

[yangzhongke]

hello