public ActionResult Assigned(string isbn, string httpVerb)
{
var param = Session[SESSION_KEY] as SessionParameters;
if (param == null)
{
return(View("BookError"));
}
ICourse course = new Course(param);
string errorMessage = string.Empty;
try {
switch (httpVerb)
{
case "GET":
var items = course.AssignedBooks();
var results = new BookItemResults {
Items = items, CanEdit = param.CanEdit
};
return(View("BookList", results));
case "POST":
errorMessage = "Unable to assign book(" + isbn + ") to course.";
course.AddBook(isbn);
return(Json(new { Error = false }));
case "DELETE":
errorMessage = "Unable to remove book(" + isbn + ") from course.";
course.RemoveBook(isbn);
return(Json(new { Error = false }));
}
} catch (InvalidOperationException e) {
if (httpVerb == "GET")
{
ViewBag.ErrorMessage = e.Message;
return(View("BookError"));
}
Response.StatusCode = (int)HttpStatusCode.BadRequest;
return(Json(new { Error = true, Message = errorMessage + e.Message }));
}
return(View("BookError"));
}
