RavenDB If extension method

RavenDB.cs

// usage

_db.Query<Story, Stories_Search>()
   .If(status.HasValue, q => q.Where(x => x.Status == status))
   .If(!curatorId.IsEmpty(), q => q.Where(x => x.CuratorId == curatorId))
   .If(publicationDate.HasValue, q => q.Where(x => x.ProposedPublicationDate == publicationDate.Value.Date))
  .OrderByDescending(x => x.CreatedAt)
  .ToPagedList(page, size);


// extension methods

public static IRavenQueryable<T> If<T>(this IRavenQueryable<T> query, bool should, params Func<IRavenQueryable<T>, IRavenQueryable<T>>[] transforms)
{
  return should ? transforms.Aggregate(query, (current, transform) => transform.Invoke(current)) : query;
}

public static IDocumentQuery<T> If<T>(this IDocumentQuery<T> query, bool should, params Func<IDocumentQuery<T>, IDocumentQuery<T>>[] transforms)
{
  return should ? transforms.Aggregate(query, (current, transform) => transform.Invoke(current)) : query;
}