public async Task <IActionResult> Edit(TeacherCourseDto course)
{
if (ModelState.IsValid)
{
var teacherId = userManager.GetUserId(User);
await teacherCourseService.UpdateAsync(teacherId, course);
return(RedirectToAction(nameof(Index)));
}
return(View(course));
}
// Update Model by Id
public async Task <bool> UpdateAsync(string teacherId, TeacherCourseDto courseDto)
{
if (courseDto == null)
{
return(false);
}
var dbCourse = db.Courses.Find(courseDto.Id);
if (dbCourse == null)
{
return(false);
}
// The teacher can only edit his courses
var TeacherForCourse = db.TeacherCourses.Find(teacherId, dbCourse.Id);
if (TeacherForCourse == null)
{
return(false);
}
try
{
dbCourse.Name = courseDto.Name;
dbCourse.Description = courseDto.Description;
db.Courses.Update(dbCourse);
var result = await db.SaveChangesAsync();
if (result <= 0)
{
return(false);
}
}
catch (DbUpdateConcurrencyException)
{
if (!CourseExists(courseDto.Id))
{
return(false);
}
else
{
throw;
}
}
return(true);
}
