func LoadDetails(orders []*model.Order) error {
if orders != nil {
for _, o := range orders {
details, err := orderdao.GetOrderDetails(o.TrackNumber)
if err != nil {
return err
}
o.Details = details
}
}
return nil
}
// load all suborders, with all details. set to order
func LoadSubOrders(order *model.Order) ([]*model.Order, error) {
// now := time.Now()
suborders, err := orderdao.ListSubOrders(order.TrackNumber)
if err != nil {
return nil, err
}
// load all details. cascaded.
for _, o := range suborders {
details, err := orderdao.GetOrderDetails(o.TrackNumber)
if err != nil {
return nil, err
}
o.Details = details
}
// fmt.Println()
return suborders, nil
}
func _processingUpdateOrderDetails(order *model.Order) error {
if nil == order {
return nil // || order.Details == nil || len(order.Details) <= 0
}
var createGroup = []*model.OrderDetail{}
var updateGroup = []*model.OrderDetail{}
var deleteGroup = []*model.OrderDetail{}
// 1. load all details;
details, err := orderdao.GetOrderDetails(order.TrackNumber)
if err != nil {
return err
}
if details == nil || len(details) == 0 {
if order.Details != nil {
createGroup = order.Details
}
} else {
// normal case, create, update and delete;
var deleteWhoIsFalse = make([]bool, len(details)) // make(map[int]bool, len(details))
if order.Details != nil {
// find who should create and who need update.
for _, d := range order.Details {
// Liner find match in details.
var find = false
for idx2, d2 := range details {
// find the matched item.
if d.ProductId == d2.ProductId && d.Color == d2.Color && d.Size == d2.Size {
// assign id into it; update operation need id.
d.Id = d2.Id
// if any value changed; If quantity changed to 0, delete it;
if d.Quantity != d2.Quantity || d.SellingPrice != d2.SellingPrice || d.Note != d2.Note {
if d.Quantity > 0 {
updateGroup = append(updateGroup, d)
}
}
// if quantity equails 0, mark as delete;
find = true
if d.Quantity == 0 {
deleteWhoIsFalse[idx2] = false // nothing, just remind it.
} else {
deleteWhoIsFalse[idx2] = true
}
break
}
}
if !find {
createGroup = append(createGroup, d) // if not found, create this.
}
}
}
// --------------------------------------------------------------------------------
fmt.Println(">>>> details and order details:")
if nil != details {
for _, d := range details {
fmt.Println("\tdetails: ", d.OrderTrackNumber, d.Color, d.Size, " = ", d.Quantity, d.SellingPrice)
}
}
if nil != order.Details {
for _, d := range order.Details {
fmt.Println("\torder details: ", d.OrderTrackNumber, d.Color, d.Size, " = ", d.Quantity, d.SellingPrice)
}
}
fmt.Println(">>>> who is false?")
for idx, b := range deleteWhoIsFalse {
fmt.Println("\t >> who is false: ", idx, b)
}
// who will be deleted?
for idx, b := range deleteWhoIsFalse { // } i := 0; i < len(details); i++ {
if !b {
deleteGroup = append(deleteGroup, details[idx])
}
}
}
var debugdetails = false
if debugdetails {
fmt.Println("\n\n\n--------------------------------------------------------------------------------")
fmt.Println("Order Detail Create Group:")
if nil != createGroup {
for _, d := range createGroup {
fmt.Println("\tcreate: ", d.OrderTrackNumber, d.Color, d.Size, " = ", d.Quantity, d.SellingPrice)
}
}
fmt.Println("Order Detail Update Group:")
if nil != updateGroup {
for _, d := range updateGroup {
fmt.Println("\tupdate: ", d.OrderTrackNumber, d.Color, d.Size, " = ", d.Quantity, d.SellingPrice)
}
}
fmt.Println("Order Detail Delete Group:")
if nil != deleteGroup {
for _, d := range deleteGroup {
fmt.Println("\tdelete: ", d.OrderTrackNumber, d.Color, d.Size, " = ", d.Quantity, d.SellingPrice)
}
}
fmt.Println("==========================================================================\n\nDebug Done!")
}
// final process: create, update, and delete
if createGroup != nil {
if err := orderdao.CreateOrderDetail(createGroup); err != nil {
return err
}
}
if updateGroup != nil {
if err := orderdao.BatchUpdateOrderDetail(updateGroup); err != nil {
return err
}
}
if deleteGroup != nil {
if err := orderdao.DeleteOrderDetails(deleteGroup); err != nil {
return err
}
}
return nil
}