public async Task <ActionResult> CreateClass(ClassCreateViewModel model)
{
var departments = await InstitutionManager.GetAllDepartmentsAsync();
SelectList departSelectList = new SelectList(departments, "Id", "Name");
ViewBag.departSelectList = departSelectList;
var majors = await InstitutionManager.GetMajorsForDepartmentAsync(departments.ElementAtOrDefault(0));
SelectList majorSelectList = new SelectList(majors, "Id", "Name");
ViewBag.majorSelectList = majorSelectList;
var grades = await InstitutionManager.GetAllGradesAsync();
SelectList gradeSelectList = new SelectList(grades, "Id", "GradeNum");
ViewBag.gradeSelectList = gradeSelectList;
ViewBag.Classes = await InstitutionManager.GetAllClassesAsync();
if (ModelState.IsValid)
{
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));
}
var class1 = new Class
{
ClassDefination = model.Defination,
Grade = grade,
Major = major
};
if (await InstitutionManager.IsClassExistAsync(c =>
!c.IsDeleted && c.Grade.Id == class1.Grade.Id && c.Major.Id == class1.Major.Id &&
c.ClassDefination == class1.ClassDefination))
{
ModelState.AddModelError("", "已存在Class");
return(View(model));
}
await InstitutionManager.AddClassAsync(class1);
return(RedirectToAction("AllClass"));
}
return(View(model));
}