// Product details page > back in stock subscribe
public virtual async Task <IActionResult> SubscribePopup(int productId)
{
var product = await _productService.GetProductByIdAsync(productId);
if (product == null || product.Deleted)
{
throw new ArgumentException("No product found with the specified id");
}
var model = new BackInStockSubscribeModel
{
ProductId = product.Id,
ProductName = await _localizationService.GetLocalizedAsync(product, x => x.Name),
ProductSeName = await _urlRecordService.GetSeNameAsync(product),
IsCurrentCustomerRegistered = await _customerService.IsRegisteredAsync(await _workContext.GetCurrentCustomerAsync()),
MaximumBackInStockSubscriptions = _catalogSettings.MaximumBackInStockSubscriptions,
CurrentNumberOfBackInStockSubscriptions = (await _backInStockSubscriptionService
.GetAllSubscriptionsByCustomerIdAsync((await _workContext.GetCurrentCustomerAsync()).Id, (await _storeContext.GetCurrentStoreAsync()).Id, 0, 1))
.TotalCount
};
if (product.ManageInventoryMethod == ManageInventoryMethod.ManageStock &&
product.BackorderMode == BackorderMode.NoBackorders &&
product.AllowBackInStockSubscriptions &&
await _productService.GetTotalStockQuantityAsync(product) <= 0)
{
//out of stock
model.SubscriptionAllowed = true;
model.AlreadySubscribed = await _backInStockSubscriptionService
.FindSubscriptionAsync((await _workContext.GetCurrentCustomerAsync()).Id, product.Id, (await _storeContext.GetCurrentStoreAsync()).Id) != null;
}
return(PartialView(model));
}