Fields list in selects

[grechkin-pogrebnyakov]

Now it generates:

// One is used to retrieve one result. It returns gorm.ErrRecordNotFound
// if nothing was fetched
func (qs PaymentQuerySet) One(ret *Payment) error {
 return qs.db.First(ret).Error
}

If would be awesome if it was this like:

// One is used to retrieve one result. It returns gorm.ErrRecordNotFound
// if nothing was fetched
func (qs PaymentQuerySet) One(ret *Payment, fields ...paymentDBSchemaField) error {
 if (len(fields) != 0) {
  qs = qs.w(qs.db.Select(fields...))
 }
 return qs.db.First(ret).Error
}

I think that pull request #58 handles this.

[derElektrobesen]

Fixed in #58