public IHttpActionResult AddCourse(AddCourseViewModel newCourse)
{
if (ModelState.IsValid)
{
try
{
CourseDetailsDTO course = _service.AddCourse(newCourse);
var location = Url.Link("GetCourse", new { id = course.ID });
return Created(location, course);
}
catch(CourseNotFoundException)
{
throw new HttpResponseException(HttpStatusCode.NotFound);
}
}
else
{
return StatusCode(HttpStatusCode.PreconditionFailed);
}
}
/// <summary>
/// Adds the course to the list of courses.
/// If an entry for the given CourseID does not exist
/// in the course template list, an object not found exception is thrown.
/// </summary>
/// <param name="course"></param>
/// <returns></returns>
public CourseDetailsDTO AddCourse(AddCourseViewModel course)
{
// 1. Validation
var courseTemplate = _db.CourseTemplates.SingleOrDefault(x => x.CourseID == course.CourseID);
if (courseTemplate == null)
{
throw new CourseNotFoundException();
}
// 2. Create the database object
var courseEntity = new Course
{
CourseID = course.CourseID,
StartDate = course.StartDate,
EndDate = course.EndDate,
Semester = course.Semester
};
_db.Courses.Add(courseEntity);
_db.SaveChanges();
// 3. Create the return object
var createdCourseEntity = _db.Courses.SingleOrDefault(x => x.CourseID == course.CourseID && x.Semester == course.Semester);
CourseDetailsDTO courseDTO = new CourseDetailsDTO
{
ID = createdCourseEntity.ID,
CourseID = course.CourseID,
StartDate = course.StartDate,
EndDate = course.EndDate,
Name = courseTemplate.Name,
Students = null
};
return courseDTO;
}
