public int Create(SportField field)
        {
            //TODO Fix it

            this.fields.Add(field);
            this.fields.SaveChanges();

            return 0;
        }
 public void Destroy(SportField field)
 {
     this.fields.Delete(field);
     this.fields.SaveChanges();
 }
 public void Update(SportField field)
 {
     this.fields.Update(field);
     this.fields.SaveChanges();
 }