public bool AddTeacherToGroup(int groupId, int teacherId)
{
Group group = context.Groups.FirstOrDefault(x => x.Id == groupId);
Teacher teacher = context.Teachers.FirstOrDefault(x => x.Id == teacherId);
if (group != null && teacher != null)
{
GroupTeacher groupTeacher = context.GroupTeachers.FirstOrDefault(x => x.GroupID == groupId && x.TeacherID == teacherId);
if (groupTeacher != null)
{
return(false);
}
GroupTeacher newGroupTeacher = new GroupTeacher()
{
GroupID = group.Id, TeacherID = teacher.Id
};
context.GroupTeachers.Add(newGroupTeacher);
var result = context.SaveChanges();
if (result > 0)
{
return(true);
}
}
return(false);
}
public bool DeleteTeacherFromGroup(int groupId, int teacherId)
{
GroupTeacher groupTeacher = context.GroupTeachers.FirstOrDefault(x => x.GroupID == groupId && x.TeacherID == teacherId);
if (groupTeacher != null)
{
context.GroupTeachers.Remove(groupTeacher);
var result = context.SaveChanges();
if (result > 0)
{
return(true);
}
}
return(false);
}