public IHttpActionResult UpdateCourse(int id, CourseUpdateViewModel model)
{
if (ModelState.IsValid)
{
try
{
var result = _service.UpdateCourse(id, model);
return Content(HttpStatusCode.OK, result);
}
catch (AppObjectNotFoundException)
{
return StatusCode(HttpStatusCode.NotFound);
}
}
else
{
return StatusCode(HttpStatusCode.PreconditionFailed);
}
}
/// <summary>
/// Updates a specific course by a given id.
/// </summary>
/// <param name="id"></param>
/// <param name="model"></param>
/// <returns></returns>
public CourseDTO UpdateCourse(int id, CourseUpdateViewModel model)
{
// Validate
var courseEntity = _db.Courses.SingleOrDefault(x => x.ID == id);
if(courseEntity == null)
{
throw new AppObjectNotFoundException();
}
//make changes to the entity object and save changes to database
courseEntity.StartDate = model.StartDate;
courseEntity.EndDate = model.EndDate;
if(model.MaxStudents != 0)
{
courseEntity.MaxStudents = model.MaxStudents;
}
_db.SaveChanges();
// Return
var courseTemplate = _db.CourseTemplates.SingleOrDefault(x => x.TemplateID == courseEntity.TemplateID);
if (courseTemplate == null)
{
//return 500 internal server error
throw new ApplicationException("");
}
var count = _db.CourseStudents.Count(x => x.CourseID == courseEntity.ID);
var result = new CourseDTO
{
ID = courseEntity.ID,
Name = courseTemplate.Name,
StartDate = courseEntity.StartDate,
StudentCount = count
};
return result;
}
