public void EvaluateAjaxRequest(AjaxRequestResult requestResult)
{
//The easy way
requestResult.IsAjaxRequest = (_httpRequest[XRequestedWith] == XmlHttpRequest) ||
(_httpRequest.Headers[XRequestedWith] == XmlHttpRequest);
//If we are not sure that we have an AJAX request or that we have to return JSON
//we fall back to Reflection
if (!requestResult.IsAjaxRequest)
{
try
{
//We create a controller instance
var controllerFactory = new DefaultControllerFactory();
var controller = controllerFactory.CreateController(_httpRequest.RequestContext, requestResult.RequestController) as Controller;
//We get the controller actions
if (controller != null)
{
var controllerDescriptor = new ReflectedControllerDescriptor(controller.GetType());
var controllerActions = controllerDescriptor.GetCanonicalActions();
//We search for our action
if (SeekControllerActionWithJson(requestResult, controllerActions))
{
requestResult.IsAjaxRequest = true;
}
}
}
catch
{
}
}
}
public AjaxRequestResult RequestResult()
{
var requestResult = new AjaxRequestResult
{
RequestController = string.Format("{0}", _httpRequest.RequestContext.RouteData.Values["controller"] ?? string.Empty),
RequestControllerAction = string.Format("{0}", _httpRequest.RequestContext.RouteData.Values["action"] ?? string.Empty)
};
return(requestResult);
}
private bool SeekControllerActionWithJson(AjaxRequestResult requestResult, IEnumerable <ActionDescriptor> controllerActions)
{
return(controllerActions.Cast <ReflectedActionDescriptor>()
.Where(actionDescriptor => actionDescriptor.ActionName.ToUpper() == requestResult.RequestControllerAction.ToUpper())
.Any(actionDescriptor => actionDescriptor.MethodInfo.ReturnType == typeof(JsonResult)));
}
