public async Task <JsonResult> GetGrainTypes(string priceAreaId, string productItemId)
{
var supplier = UserManager.GetActiveCustomer(HttpContext);
if (SiteUser == null || supplier == null)
{
return(Json(new {}, JsonRequestBehavior.AllowGet));
}
var grainType = await _agreementRepository.GetGrainTypesPoolAgreementAsync(priceAreaId, productItemId);
return(Json(grainType, JsonRequestBehavior.AllowGet));
}