public static User_Role Create(User_Role source)
{
using (KeunhongInstituteDBEntities dbContext = new KeunhongInstituteDBEntities())
{
User_Role ur = new User_Role();
try
{
ur.CreatedBy = source.CreatedBy;
ur.CreatedDateTime = DateTime.Now;
ur.IsActive = true;
ur.ModifiedBy = source.ModifiedBy;
ur.ModifiedDateTime = DateTime.Now;
ur.Role_ID = source.Role_ID;
ur.User_ID = source.User_ID;
dbContext.User_Role.Add(ur);
dbContext.SaveChanges();
}
catch (Exception)
{
return(null);
}
return(ur);
}
}
public static User GetUser(this User_Role context)
{
using (KeunhongInstituteDBEntities dbContext = new KeunhongInstituteDBEntities())
{
return(dbContext.Users.FirstOrDefault(u => u.IsActive && u.User_ID.Equals(context.User_ID)));
}
}
public static List <Role> GetAllRoles()
{
using (KeunhongInstituteDBEntities dbContext = new KeunhongInstituteDBEntities())
{
return(dbContext.Roles.Where(r => r.IsActive).ToList());
}
}
public static Role GetRole(this User context)
{
using (KeunhongInstituteDBEntities dbContext = new KeunhongInstituteDBEntities())
{
return(dbContext.User_Role.FirstOrDefault(u => u.IsActive && u.User_ID == context.User_ID).GetRole());
}
}
public static Student_Course GetStudentCourse(this User context, Course_Schedule schedule)
{
using (KeunhongInstituteDBEntities dbContext = new KeunhongInstituteDBEntities())
{
return(dbContext.Student_Course.FirstOrDefault(sc => sc.IsActive && sc.User_ID.Equals(context.User_ID) && sc.CourseSchedule_ID.Equals(schedule.CourseSchedule_ID)));
}
}
public static Role GetRole(this User_Role context)
{
using (KeunhongInstituteDBEntities dbContext = new KeunhongInstituteDBEntities())
{
return(dbContext.Roles.FirstOrDefault(r => r.IsActive && r.Role_ID.Equals(context.Role_ID)));
}
}
public static List <Course_Schedule> GetSchedulesOf(User user, RoleTypes roleType)
{
using (KeunhongInstituteDBEntities dbContext = new KeunhongInstituteDBEntities())
{
//Check role type
if (roleType == RoleTypes.Student)
{
//Find all student course object with the user's id
var selections = dbContext.Student_Course.Where(sc => sc.User_ID.Equals(user.User_ID) && sc.IsActive);
//Convert student_course to course_schedule
List <Course_Schedule> courseSchedules = new List <Course_Schedule>();
foreach (Student_Course sc in selections)
{
Course_Schedule cs = sc.GetSchedule();
if (cs != null)
{
courseSchedules.Add(cs);
}
}
//Return the list
return(courseSchedules);
}
else
{
//Return all course_schedules where its teacher_id equals the given user's id.
var selections = dbContext.Course_Schedule.Where(s => s.Teacher_ID.Equals(user.User_ID) && s.IsActive);
return(selections.ToList());
}
}
}
public static List <Faculty> GetAll()
{
using (KeunhongInstituteDBEntities dbContext = new KeunhongInstituteDBEntities())
{
return(dbContext.Faculties.Where(f => f.IsActive).ToList());
}
}
public static List <Student_Course> GetStudentCourses(this Course_Schedule context)
{
using (KeunhongInstituteDBEntities dbContext = new KeunhongInstituteDBEntities())
{
return(dbContext.Student_Course.Where(sc => sc.IsActive && sc.CourseSchedule_ID.Equals(context.CourseSchedule_ID)).ToList());
}
}
public static User Create(User source)
{
using (KeunhongInstituteDBEntities dbContext = new KeunhongInstituteDBEntities())
{
//Create instance of new user and set values from source
User user = new User();
try
{
user.Address = source.Address;
user.ContactNumber = source.ContactNumber;
user.CreatedBy = source.CreatedBy;
user.CreatedDateTime = DateTime.Now;
user.DateOfBirth = source.DateOfBirth;
user.Email = source.Email;
user.FirstName = source.FirstName;
user.FullName = source.FullName;
user.IsActive = true;
user.LastName = source.LastName;
user.ModifiedBy = source.ModifiedBy;
user.ModifiedDateTime = DateTime.Now;
user.Password = source.Password;
user.Student_ID = source.Student_ID;
//Add the new user to DB and apply change
dbContext.Users.Add(user);
dbContext.SaveChanges();
}
catch (Exception)
{
return(null);
}
return(user);
}
}
public static Course_Schedule GetSchedule(this Student_Course context)
{
using (KeunhongInstituteDBEntities dbContext = new KeunhongInstituteDBEntities())
{
return(dbContext.Course_Schedule.FirstOrDefault(s => s.IsActive && s.CourseSchedule_ID.Equals(context.CourseSchedule_ID)));
}
}
public static List <Course> GetAllCourses()
{
using (KeunhongInstituteDBEntities dbContext = new KeunhongInstituteDBEntities())
{
return(dbContext.Courses.Where(c => c.IsActive).ToList());
}
}
public static Faculty GetFaculty(this Course context)
{
using (KeunhongInstituteDBEntities dbContext = new KeunhongInstituteDBEntities())
{
return(dbContext.Faculties.FirstOrDefault(f => f.IsActive && f.Faculty_ID.Equals(context.Faculty_ID)));
}
}
public static User GetStudent(this Student_Course context)
{
using (KeunhongInstituteDBEntities dbContext = new KeunhongInstituteDBEntities())
{
return(dbContext.Users.FirstOrDefault(u => u.User_ID.Equals(context.User_ID) && u.IsActive));
}
}
public static List <Course_Schedule> GetSchedules(this Course context)
{
using (KeunhongInstituteDBEntities dbContext = new KeunhongInstituteDBEntities())
{
return(dbContext.Course_Schedule.Where(cs => cs.IsActive && cs.Course_ID.Equals(context.Course_ID)).ToList());
}
}
public static Course GetCourse(this Course_Schedule context)
{
using (KeunhongInstituteDBEntities dbContext = new KeunhongInstituteDBEntities())
{
return(dbContext.Courses.FirstOrDefault(c => c.Course_ID.Equals(context.Course_ID) && c.IsActive));
}
}
public static User GetTutor(this Course_Schedule context)
{
using (KeunhongInstituteDBEntities dbContext = new KeunhongInstituteDBEntities())
{
return(dbContext.Users.FirstOrDefault(t => t.User_ID.Equals(context.Teacher_ID) && t.IsActive));
}
}
public static bool IsEnrolled(this User context, Course course)
{
using (KeunhongInstituteDBEntities dbContext = new KeunhongInstituteDBEntities())
{
return(dbContext.Student_Course.FirstOrDefault(c => c.IsActive && c.GetCourse().Course_ID.Equals(course.Course_ID) && c.User_ID.Equals(context.User_ID)) != null);
}
}
public static bool Create(Course source)
{
using (KeunhongInstituteDBEntities dbContext = new KeunhongInstituteDBEntities())
{
try
{
Course course = new Course();
course.Course_Code = source.Course_Code;
course.Course_Description = source.Course_Description;
course.Course_Name = source.Course_Name;
course.CreatedBy = source.CreatedBy;
course.CreatedDateTime = DateTime.Now;
course.Faculty_ID = source.Faculty_ID;
course.IsActive = true;
course.ModifiedBy = source.ModifiedBy;
course.ModifiedDateTime = DateTime.Now;
dbContext.Courses.Add(course);
dbContext.SaveChanges();
}
catch (Exception)
{
return(false);
}
}
return(true);
}
public static bool Create(Course_Schedule source)
{
using (KeunhongInstituteDBEntities dbContext = new KeunhongInstituteDBEntities())
{
try
{
Course_Schedule schedule = new Course_Schedule();
schedule.Course_ID = source.Course_ID;
schedule.CreatedBy = source.CreatedBy;
schedule.CreatedDateTime = DateTime.Now;
schedule.DT_From = source.DT_From;
schedule.DT_To = source.DT_To;
schedule.IsActive = true;
schedule.ModifiedBy = source.ModifiedBy;
schedule.ModifiedDateTime = DateTime.Now;
schedule.Teacher_ID = source.Teacher_ID;
dbContext.Course_Schedule.Add(schedule);
dbContext.SaveChanges();
}
catch (Exception)
{
return(false);
}
}
return(true);
}
public static int GetCourseCount()
{
using (KeunhongInstituteDBEntities dbContext = new KeunhongInstituteDBEntities())
{
return(dbContext.Courses.Where(c => c.IsActive).Count());
}
}
public static bool Create(Student_Course source)
{
using (KeunhongInstituteDBEntities dbContext = new KeunhongInstituteDBEntities())
{
try
{
Student_Course sc = new Student_Course();
sc.CourseSchedule_ID = source.CourseSchedule_ID;
sc.CreatedBy = source.CreatedBy;
sc.CreatedDateTime = DateTime.Now;
sc.IsActive = true;
sc.ModifiedBy = source.ModifiedBy;
sc.ModifiedDateTime = DateTime.Now;
sc.User_ID = source.User_ID;
sc.Grade = source.Grade;
dbContext.Student_Course.Add(sc);
dbContext.SaveChanges();
}
catch (Exception)
{
return(false);
}
}
return(true);
}
public static RoleTypes GetRoleOf(User user)
{
using (KeunhongInstituteDBEntities dbContext = new KeunhongInstituteDBEntities())
{
var selection = dbContext.User_Role.FirstOrDefault(u => u.IsActive && u.User_ID == user.User_ID);
return((RoleTypes)selection.Role_ID);
}
}
public static List <Course_Schedule> GetAllSchedules()
{
using (KeunhongInstituteDBEntities dbContext = new KeunhongInstituteDBEntities())
{
//Get all schedules and return
return(dbContext.Course_Schedule.Where(cs => cs.IsActive).ToList());
}
}
public static List <User> GetAllUsers()
{
using (KeunhongInstituteDBEntities dbContext = new KeunhongInstituteDBEntities())
{
//Return all users
return(dbContext.Users.Where(u => u.IsActive).ToList());
}
}
public static void Delete(User user)
{
using (KeunhongInstituteDBEntities dbContext = new KeunhongInstituteDBEntities())
{
dbContext.Users.Remove(user);
dbContext.SaveChanges();
}
}
public static User Exists(string username)
{
using (KeunhongInstituteDBEntities dbContext = new KeunhongInstituteDBEntities())
{
//Check if a user exists with given username and pw.
return(dbContext.Users.FirstOrDefault(user => user.Student_ID.Equals(username) && user.IsActive));
}
}
public static User Login(string username, string password)
{
password = Renko.MD5Encryption.Encrypt(password);
using (KeunhongInstituteDBEntities dbContext = new KeunhongInstituteDBEntities())
{
return(dbContext.Users.FirstOrDefault(user => user.Student_ID.Equals(username) && password.Equals(user.Password) && user.IsActive));
}
}
public static List <Student_Course> GetStudentCoursesOf(User user)
{
using (KeunhongInstituteDBEntities dbContext = new KeunhongInstituteDBEntities())
{
//Return all course_schedules where its teacher_id equals the given user's id.
var selections = dbContext.Student_Course.Where(s => s.User_ID.Equals(user.User_ID) && s.IsActive);
return(selections.ToList());
}
}
public static void DoDBOperation(Action <KeunhongInstituteDBEntities> operation, Action <Exception> onCatch = null)
{
using (KeunhongInstituteDBEntities dbContext = new KeunhongInstituteDBEntities())
{
try
{
operation(dbContext);
}
catch (Exception e)
{
onCatch(e);
}
}
}
