public void Edit(TEntity entity)
{
var entry = _context.Entry <TEntity>(entity);
var pkey = _dbSet.Create().GetType().GetProperty("id").GetValue(entity);
if (entry.State == EntityState.Detached)
{
var set = _context.Set <TEntity>();
TEntity attachedEntity = set.Find(pkey); // access the key
if (attachedEntity != null)
{
var attachedEntry = _context.Entry(attachedEntity);
attachedEntry.CurrentValues.SetValues(entity);
}
else
{
entry.State = EntityState.Modified; // attach the entity
}
}
_context.SaveChanges();
}
public void ModifySubject(Subject modifiedSubject)
{
try
{
using (var context = new ContextDB())
{
context.Subjects.Attach(modifiedSubject);
context.Entry(modifiedSubject).State = EntityState.Modified;
context.SaveChanges();
}
}
catch (Exception)
{
throw new SubjectPersistanceException("Se ha perdido la conexion con el servidor");
}
}
private void ModifySchoolVan(SchoolVan modifiedSchoolVan)
{
try
{
using (var context = new ContextDB())
{
SchoolVan oldSchoolVan = Get(modifiedSchoolVan.Id);
context.SchoolVans.Attach(oldSchoolVan);
oldSchoolVan.Capacity = modifiedSchoolVan.Capacity;
context.Entry(oldSchoolVan).State = EntityState.Modified;
context.SaveChanges();
}
}
catch (Exception e)
{
throw new SchoolVanPersistanceException("Se ha perdido la conexion con el servidor");
}
}
private void ModifyActivity(Activity modifiedActivity)
{
try
{
using (var context = new ContextDB())
{
Activity oldActivity = Get(modifiedActivity.Id);
context.Activities.Attach(oldActivity);
oldActivity.Name = modifiedActivity.Name;
oldActivity.Cost = modifiedActivity.Cost;
oldActivity.Date = modifiedActivity.Date;
context.Entry(oldActivity).State = EntityState.Modified;
context.SaveChanges();
}
}
catch (Exception e)
{
throw new ActivityPersistanceException("Se ha perdido la conexion con el servidor");
}
}
public void ModifyTeacher(Teacher modifiedTeacher)
{
try
{
using (var context = new ContextDB())
{
Teacher oldTeacher = Get(modifiedTeacher.Id);
context.Teachers.Attach(oldTeacher);
oldTeacher.Id = modifiedTeacher.Id;
oldTeacher.Name = modifiedTeacher.Name;
oldTeacher.LastName = modifiedTeacher.LastName;
oldTeacher.Subjects = modifiedTeacher.Subjects;
oldTeacher.Subjects = GetSubjectListAttached(context, modifiedTeacher);
context.Entry(oldTeacher).State = EntityState.Modified;
context.SaveChanges();
}
}
catch (Exception e)
{
throw new StudentPersistanceException("Se ha perdido la conexion con el servidor");
}
}
private void ModifyStudent(Student modifiedStudent)
{
try
{
using (var context = new ContextDB())
{
Student oldStudent = Get(modifiedStudent.Id);
context.Students.Attach(oldStudent);
oldStudent.Name = modifiedStudent.Name;
oldStudent.LastName = modifiedStudent.LastName;
oldStudent.StudentNumber = modifiedStudent.StudentNumber;
oldStudent.Coordinates = modifiedStudent.Coordinates;
oldStudent.Ci = modifiedStudent.Ci;
oldStudent.Subjects = modifiedStudent.Subjects;
oldStudent.Subjects = GetSubjectListAttached(context, modifiedStudent);
context.Entry(oldStudent).State = EntityState.Modified;
context.SaveChanges();
}
}
catch (Exception e)
{
throw new StudentPersistanceException("Se ha perdido la conexion con el servidor");
}
}