// LTI Outcomes reverse the relationship between Tool Consumers and Tool Providers. The Tool
// Provider becomes a consumer of the Outcomes service hosted by the Tool Consumer. In this
// sample, the Tool Provider and tell the Tool Consumer to save, read, and delete scores.
#region LTI 1.1 Outcomes (scores)
/// <summary>
/// Display the Basic Outcomes settings and provide buttons to exercise the three actions.
/// </summary>
/// <param name="lisOutcomeServiceUrl">The URL to the Outcomes service hosted by the Tool Consumer.</param>
/// <param name="lisResultSourcedId">The SourcedId of the LisResult used in the demo.</param>
/// <param name="consumerKey">The OAuth Consumer Key to use when sending requests to the Outcomes Service.</param>
/// <param name="consumerSecret">The OAuth Consumer Secret to use when sending requests to the Outcomes Service.</param>
/// <remarks>
/// The Outcomes service is hosted by the Tool Consumer. The Tool Provider call the Outcomes service.
/// </remarks>
public ActionResult BasicOutcomes(string lisOutcomeServiceUrl, string lisResultSourcedId, string consumerKey, string consumerSecret)
{
var model = new BasicOutcomeModel
{
LisOutcomeServiceUrl = lisOutcomeServiceUrl,
LisResultSourcedId = lisResultSourcedId,
ConsumerKey = consumerKey,
ConsumerSecret = consumerSecret
};
return View(model);
}
public ActionResult BasicOutcomes(BasicOutcomeModel model, string submit)
{
switch (submit)
{
case "Send Grade":
if (LtiLibrary.Core.Outcomes.v1.OutcomesClient.PostScore(model.LisOutcomeServiceUrl, model.ConsumerKey, model.ConsumerSecret,
model.LisResultSourcedId, model.Score))
{
ViewBag.Message = "Grade sent";
}
else
{
ViewBag.Message = "Invalid request";
}
break;
case "Read Grade":
var lisResult = LtiLibrary.Core.Outcomes.v1.OutcomesClient.ReadScore(model.LisOutcomeServiceUrl, model.ConsumerKey,
model.ConsumerSecret, model.LisResultSourcedId);
if (lisResult.IsValid)
{
model.Score = lisResult.Score;
ViewBag.Message = "Grade read";
}
else
{
ViewBag.Message = "No grade";
}
break;
case "Delete Grade":
if (LtiLibrary.Core.Outcomes.v1.OutcomesClient.DeleteScore(model.LisOutcomeServiceUrl, model.ConsumerKey, model.ConsumerSecret,
model.LisResultSourcedId))
{
model.Score = null;
ViewBag.Message = "Grade deleted";
}
else
{
ViewBag.Message = "Invalid request";
}
break;
}
return View(model);
}