public int UpdateStudent(Student student, List <Course> courses)
{
using (var db = new MiniDbContext())
{
var oldStudent = db.Students
.Include("Courses")
.Include("Address")
.SingleOrDefault(s => s.StudentId == student.StudentId);
foreach (var item in oldStudent.Courses.ToList())
{
oldStudent.Courses.Remove(item);
}
db.Entry(oldStudent).CurrentValues.SetValues(student);
db.Entry(oldStudent.Address).CurrentValues.SetValues(student.Address);
foreach (var item in courses)
{
oldStudent.Courses.Add(item);
}
return(db.SaveChanges());
}
}
public async Task <IActionResult> PutSource(int id, Source source)
{
if (id != source.Id)
{
return(BadRequest());
}
_context.Entry(source).State = EntityState.Modified;
try
{
await _context.SaveChangesAsync();
}
catch (DbUpdateConcurrencyException)
{
if (!SourceExists(id))
{
return(NotFound());
}
else
{
throw;
}
}
return(NoContent());
}
public int AddStudent(Student student, List <Course> courses)
{
using (var db = new MiniDbContext())
{
student.Courses = courses;
db.Students.Add(student);
//Ne dodaje child tabeli objekte, vec ih samo vezuje za parenta.
foreach (Course course in courses)
{
db.Entry(course).State = EntityState.Unchanged;
}
return(db.SaveChanges());
}
}
public async Task AddAsync(T entity)
{
dbContext.Entry(entity).State = Microsoft.EntityFrameworkCore.EntityState.Added;
await dbContext.SaveChangesAsync();
}