public virtual bool TryGetResult(ViewResultBase viewResult, ContentType responseFormat, out MultiFormatActionResult actionResult)
{
if (FormatManager.Current.CanSerialize(responseFormat))
{
if (viewResult.ViewData.Model == null)
{
throw new HttpException((int)this.StatusOnNullModel, this.StatusOnNullModel.ToString());
}
actionResult = new MultiFormatActionResult(viewResult.ViewData.Model, responseFormat);
return(true);
}
switch (responseFormat.MediaType)
{
case "application/octet-stream":
case "application/x-www-form-urlencoded":
case "text/html":
case "*/*":
actionResult = null;
return(true);
default:
actionResult = null;
return(false);
}
}
public override void ExecuteResult(ControllerContext context) {
if (this.details != null) {
MultiFormatActionResult rar = new MultiFormatActionResult(this.details, this.responseFormat, this.statusCode);
if (rar.TryExecuteResult(context, this.details, this.responseFormat)) {
return;
}
}
context.HttpContext.Response.ClearContent();
context.HttpContext.Response.StatusCode = (int)this.statusCode;
context.HttpContext.Response.TrySkipIisCustomErrors = true;
}
public override void ExecuteResult(ControllerContext context)
{
if (this.details != null)
{
MultiFormatActionResult rar = new MultiFormatActionResult(this.details, this.responseFormat, this.statusCode);
if (rar.TryExecuteResult(context, this.details, this.responseFormat))
{
return;
}
}
context.HttpContext.Response.ClearContent();
context.HttpContext.Response.StatusCode = (int)this.statusCode;
context.HttpContext.Response.TrySkipIisCustomErrors = true;
}
public virtual bool TryGetResult(ViewResultBase viewResult, ContentType responseFormat, out MultiFormatActionResult actionResult)
{
if (FormatManager.Current.CanSerialize(responseFormat))
{
if (viewResult.ViewData.Model == null)
{
throw new HttpException((int)this.StatusOnNullModel, this.StatusOnNullModel.ToString());
}
actionResult = new MultiFormatActionResult(viewResult.ViewData.Model, responseFormat);
return true;
}
switch (responseFormat.MediaType)
{
case "application/octet-stream":
case "application/x-www-form-urlencoded":
case "text/html":
case "*/*":
actionResult = null;
return true;
default:
actionResult = null;
return false;
}
}
public override void OnActionExecuted(ActionExecutedContext filterContext)
{
MultiFormatActionResult multiFormatResult = filterContext.Result as MultiFormatActionResult;
if (multiFormatResult == null)
{
ViewResultBase viewResult = filterContext.Result as ViewResultBase;
if (viewResult != null && viewResult.ViewData != null)
{
bool handled = false;
foreach (ContentType responseFormat in filterContext.RequestContext.GetResponseFormats())
{
// CONSIDER: making this lookup optional if perf is an issue
for (int i = 0; i < FormatManager.Current.ResponseFormatHandlers.Count; ++i)
{
IResponseFormatHandler handler = FormatManager.Current.ResponseFormatHandlers[i];
if (handler.CanSerialize(responseFormat))
{
// we can't use the full ContentType's name (EG: "text/xml")
// instead we use the FriendlyName on the matching IResponseFormatHandler
string friendlyName = handler.FriendlyName;
string viewName = viewResult.ViewName;
if (String.IsNullOrEmpty(viewName))
{
viewName = filterContext.RouteData.GetRequiredString("action");
}
// CONSIDER: is this naming convention sufficient? look at extensibility (how can I customize the FindView process?)
viewName = viewName + "." + friendlyName;
// CONSIDER: ViewEngineCollection queries view engines in registration order and returns 1st match,
// would it make sense to let the client provide a hint in case
ViewEngineResult result = viewResult.ViewEngineCollection.FindView(filterContext, viewName, null);
// ignore errors and fallback to default behavior
if (result != null && result.View != null)
{
Encoding encoding = Encoding.UTF8;
if (!String.IsNullOrEmpty(responseFormat.CharSet))
{
try
{
encoding = Encoding.GetEncoding(responseFormat.CharSet);
}
catch (ArgumentException)
{
throw new HttpException((int)HttpStatusCode.NotAcceptable, String.Format(CultureInfo.CurrentCulture, MvcResources.Resources_UnsupportedFormat, responseFormat));
}
}
responseFormat.CharSet = encoding.HeaderName;
filterContext.HttpContext.Response.ContentType = responseFormat.ToString();
filterContext.HttpContext.Response.ContentEncoding = encoding;
// we have set the Response.ContentType but know that the webforms view engine will override it
// a different ViewPage base class that sets this can be used to workaround this
// so we make the computed responseFormat available in ViewData
viewResult.ViewData[DefaultFormatHelper.ResponseFormatKey] = responseFormat;
viewResult.View = result.View;
viewResult.ViewName = viewName;
handled = true;
break;
}
}
}
if (handled)
{
break;
}
if (TryGetResult(viewResult, responseFormat, out multiFormatResult))
{
if (multiFormatResult != null)
{
filterContext.Result = multiFormatResult;
}
handled = true;
break;
}
}
if (!handled)
{
// if enumeration doesn't yield a handler the request is not acceptable
// CONSIDER: returning all formats considered in the exception messages
throw new HttpException((int)HttpStatusCode.NotAcceptable, "None of the formats specified by the accept header is supported.");
}
}
}
base.OnActionExecuted(filterContext);
RedirectToRouteResult redirectResult = filterContext.Result as RedirectToRouteResult;
if (redirectResult != null && !filterContext.RequestContext.IsBrowserRequest())
{
filterContext.Result = new ResourceRedirectToRouteResult(redirectResult);
}
}
