public async Task <ActionResult> EditClass(ClassEditViewModel model)
{
var departments = await InstitutionManager.GetAllDepartmentsAsync();
SelectList departSelectList = new SelectList(departments.ToList(), "Id", "Name");
ViewBag.departSelectList = departSelectList;
var majors = await InstitutionManager.GetMajorsForDepartmentAsync(departments.ElementAtOrDefault(0));
SelectList majorSelectList = new SelectList(majors.ToList(), "Id", "Name");
ViewBag.majorSelectList = majorSelectList;
var grades = await InstitutionManager.GetAllGradesAsync();
SelectList gradeSelectList = new SelectList(grades.ToList(), "Id", "GradeNum");
ViewBag.gradeSelectList = gradeSelectList;
ViewBag.Classes = await InstitutionManager.GetAllClassesAsync();
if (ModelState.IsValid)
{
var class1 = await InstitutionManager.FindClassByIdAsync(model.Id);
if (class1 == null)
{
ModelState.AddModelError("", "找不到class1");
return(View(model));
}
var grade = await InstitutionManager.FindGradeByIdAsync(model.GradeId);
if (grade == null)
{
ModelState.AddModelError("", "找不到grade");
return(View(model));
}
var major = await InstitutionManager.FindMajorByIdAsync(model.MajorId);
if (major == null)
{
ModelState.AddModelError("", "找不到major");
return(View(model));
}
class1.Major = major;
class1.Grade = grade;
class1.ClassDefination = model.Defination;
await InstitutionManager.UpdateClassAsync(class1);
await UserManager.RemoveStudentsFromClassAsync(model.IdsToRemove ?? new string[] { });
return(RedirectToAction("AllClass"));
}
return(View(model));
}