public void Initialize(Person connectedPerson)
{
ConnectedPerson = connectedPerson;
// Get the list of existing classes
ClassesTableData = new ObservableCollection <ClassData>(_schoolData.Classes.AsEnumerable().Select(currClass => ModelClassToClassData(currClass)).ToList());
// Create the basic list of available classes
AvailableTeachers.Clear();
// Add a 'No teacher' option, as not all classes have a teacher assigned to them.
AvailableTeachers.Add(NOT_ASSIGNED, "אין מורה משויך");
// Create the list of teachers that are not homeroom teachers already.
_schoolData.Teachers.Where(teacher => teacher.classID == null && !teacher.Person.User.isDisabled).ToList()
.ForEach(teacher => AvailableTeachers.Add(teacher.teacherID, teacher.Person.firstName + " " + teacher.Person.lastName));
// Create the basic list of available rooms
AvailableRooms.Clear();
// Add a 'no room' option, as not all classes have an an assigned room.
AvailableRooms.Add(NOT_ASSIGNED, "אין חדר משויך");
// Create the list of rooms that are not assigned to a specific class already
_schoolData.Rooms.Where(room => room.Classes.Count() == 0).ToList()
.ForEach(room => AvailableRooms.Add(room.roomID, room.roomName));
// Reset selections
SelectedTeacher = NOT_ASSIGNED;
SelectedRoom = NOT_ASSIGNED;
// For some reason, after re-initializing this view, the selections are not updated properly in the view unless called again
OnPropertyChanged("SelectedTeacher");
OnPropertyChanged("SelectedRoom");
}
public object GetAllTeachersAvailableForSlotForASubject(string PeriodNo, int SubjectId)
{
using (SqlConnection Connection = new SqlConnection(ConnectionInformation))
{
try
{
Connection.Open();
string AvailablityTeachers = "select distinct u.Id,u.Name,s.Period_No from users u left join slot s on u.Id = s.Teacher_Id " +
"left join Teacher_Subject t on u.Id = t.Teacher_Id WHERE t.Subject_Id = @Subject_Id ";
SqlCommand QueryCommand = new SqlCommand(AvailablityTeachers, Connection);
QueryCommand.Parameters.AddWithValue("@Subject_Id", SubjectId);
SqlDataReader reader = QueryCommand.ExecuteReader();
List <AvailableTeachers> entities = new List <AvailableTeachers>();
while (reader.Read())
{
AvailableTeachers user = new AvailableTeachers()
{
Id = Convert.ToInt32(reader["Id"]),
Name = Convert.ToString(reader["Name"]),
Period_No = Convert.ToString(reader["Period_No"]),
};
entities.Add(user);
}
foreach (var entry in entities.ToList())
{
if (entry.Period_No == PeriodNo)
{
foreach (var user in entities.ToList())
{
if (user.Id == entry.Id)
{
entities.Remove(user);
}
}
}
}
var result = entities.GroupBy(X => X.Id).Select(x => x.First());
reader.Close();
if (!result.Any())
{
return("No Teachers available");
}
else
{
return(result);
}
}
catch (Exception e)
{
return(e.Message);
}
finally
{
Connection.Close();
}
}
}
/// <summary>
/// Choose a specific class and view its information.
/// </summary>
/// <param name="selectedClass">The class's data</param>
private void UseSelectedClass(ClassData selectedClass)
{
// Cleanup previous selections
SelectedTeacher = NOT_ASSIGNED;
SelectedRoom = NOT_ASSIGNED;
ClassName = string.Empty;
LessonsInSelectedClass = new ObservableCollection <LessonInClass>();
StudentsInSelectedClass = new ObservableCollection <string>();
// Remove the previous class's homeroom teacher from the available teachers list as he/she are already assigned to the previous class
if (_previousHomeroomTeacher != null)
{
AvailableTeachers.Remove(_previousHomeroomTeacher.Value);
}
// Remove the previous class's room from the available rooms list as it is already assigned to the previous class
if (_previousRoom != null)
{
AvailableRooms.Remove(_previousRoom.Value);
}
// Update the properties per the selected class
if (selectedClass != null)
{
ClassName = selectedClass.Name;
// If the class has an teacher, add it first to the available teachers list
if (selectedClass.HomeroomTeacherID != null)
{
AvailableTeachers.Add(selectedClass.HomeroomTeacherID.Value, selectedClass.HomeroomTeacherName);
SelectedTeacher = selectedClass.HomeroomTeacherID.Value;
}
// If the class has a room associated with it, add it first to the available rooms list
if (selectedClass.RoomID != null)
{
AvailableRooms.Add(selectedClass.RoomID.Value, selectedClass.RoomName);
SelectedRoom = selectedClass.RoomID.Value;
}
// Save the homeroom teacher and room IDs so they can be removed when we select another class
_previousHomeroomTeacher = selectedClass.HomeroomTeacherID;
_previousRoom = selectedClass.RoomID;
// Create the list of lessons in the current class
if (selectedClass.LessonsInThisClass != null)
{
LessonsInSelectedClass = new ObservableCollection <LessonInClass>(selectedClass.LessonsInThisClass);
}
// Create the list of students in the current clas
if (selectedClass.StudentsInThisClass != null)
{
StudentsInSelectedClass = new ObservableCollection <string>(selectedClass.StudentsInThisClass);
}
}
}
/// <summary>
/// Assistant method that clears all the ViewModel properties
/// </summary>
private void ResetData()
{
AvailableSearchChoices.Clear();
LessonsTableData.Clear();
AvailableClasses.Clear();
AvailableCourses.Clear();
AvailableTeachers.Clear();
AvailableRooms.Clear();
SelectedLesson = null;
SelectedSearchChoice = NOT_ASSIGNED;
SelectedTeacher = NOT_ASSIGNED;
SelectedClass = NOT_ASSIGNED;
LessonFirstDay = NOT_ASSIGNED;
LessonSecondDay = NOT_ASSIGNED;
LessonThirdDay = NOT_ASSIGNED;
LessonFourthDay = NOT_ASSIGNED;
LessonFirstHour = NOT_ASSIGNED;
LessonSecondHour = NOT_ASSIGNED;
LessonThirdHour = NOT_ASSIGNED;
LessonFourthHour = NOT_ASSIGNED;
}
public void Initialize(Person connectedPerson)
{
ConnectedPerson = connectedPerson;
ResetData();
// Create the lists of possible classes, courses, teachers
_schoolData.Classes.ToList().ForEach(schoolClass => AvailableClasses.Add(schoolClass.classID, schoolClass.className));
_schoolData.Courses.ToList().ForEach(course => AvailableCourses.Add(course.courseID, course.courseName));
_schoolData.Teachers.Where(teacher => !teacher.Person.User.isDisabled).ToList()
.ForEach(teacher => AvailableTeachers.Add(teacher.teacherID, teacher.Person.firstName + " " + teacher.Person.lastName));
// Initialize the rooms list. Note that a room is optional and therefore has a NOT_ASSIGNED option
AvailableRooms.Add(NOT_ASSIGNED, "ללא");
_schoolData.Rooms.ToList().ForEach(room => AvailableRooms.Add(room.roomID, room.roomName));
SearchingByClass = true;
// For some reason, after re-initializing this view, the selections are not updated properly in the view unless called again
OnPropertyChanged("SelectedClass");
OnPropertyChanged("SelectedCourse");
OnPropertyChanged("SelectedTeacher");
OnPropertyChanged("SelectedRoom");
}
