forked from mirror/gorm
101 lines
3.3 KiB
Go
101 lines
3.3 KiB
Go
package gorm
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import "reflect"
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func beginTransactionCallback(scope *Scope) {
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scope.Begin()
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}
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func commitOrRollbackTransactionCallback(scope *Scope) {
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scope.CommitOrRollback()
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}
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func saveBeforeAssociationsCallback(scope *Scope) {
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if !scope.shouldSaveAssociations() {
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return
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}
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for _, field := range scope.Fields() {
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if scope.changeableField(field) && !field.IsBlank && !field.IsIgnored {
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if relationship := field.Relationship; relationship != nil && relationship.Kind == "belongs_to" {
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fieldValue := field.Field.Addr().Interface()
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scope.Err(scope.NewDB().Save(fieldValue).Error)
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if len(relationship.ForeignFieldNames) != 0 {
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// set value's foreign key
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for idx, fieldName := range relationship.ForeignFieldNames {
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associationForeignName := relationship.AssociationForeignDBNames[idx]
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if foreignField, ok := scope.New(fieldValue).FieldByName(associationForeignName); ok {
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scope.Err(scope.SetColumn(fieldName, foreignField.Field.Interface()))
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}
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}
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}
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}
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}
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}
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}
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func saveAfterAssociationsCallback(scope *Scope) {
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if !scope.shouldSaveAssociations() {
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return
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}
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for _, field := range scope.Fields() {
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if scope.changeableField(field) && !field.IsBlank && !field.IsIgnored {
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if relationship := field.Relationship; relationship != nil &&
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(relationship.Kind == "has_one" || relationship.Kind == "has_many" || relationship.Kind == "many_to_many") {
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value := field.Field
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switch value.Kind() {
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case reflect.Slice:
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for i := 0; i < value.Len(); i++ {
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newDB := scope.NewDB()
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elem := value.Index(i).Addr().Interface()
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newScope := newDB.NewScope(elem)
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if relationship.JoinTableHandler == nil && len(relationship.ForeignFieldNames) != 0 {
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for idx, fieldName := range relationship.ForeignFieldNames {
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associationForeignName := relationship.AssociationForeignDBNames[idx]
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if f, ok := scope.FieldByName(associationForeignName); ok {
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scope.Err(newScope.SetColumn(fieldName, f.Field.Interface()))
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}
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}
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}
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if relationship.PolymorphicType != "" {
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value := scope.TableName()
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if relationship.PolymorphicValue != "" {
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value = relationship.PolymorphicValue
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}
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scope.Err(newScope.SetColumn(relationship.PolymorphicType, value))
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}
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scope.Err(newDB.Save(elem).Error)
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if joinTableHandler := relationship.JoinTableHandler; joinTableHandler != nil {
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scope.Err(joinTableHandler.Add(joinTableHandler, newDB, scope.Value, newScope.Value))
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}
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}
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default:
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elem := value.Addr().Interface()
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newScope := scope.New(elem)
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if len(relationship.ForeignFieldNames) != 0 {
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for idx, fieldName := range relationship.ForeignFieldNames {
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associationForeignName := relationship.AssociationForeignDBNames[idx]
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if f, ok := scope.FieldByName(associationForeignName); ok {
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scope.Err(newScope.SetColumn(fieldName, f.Field.Interface()))
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}
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}
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}
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if relationship.PolymorphicType != "" {
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value := scope.TableName()
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if relationship.PolymorphicValue != "" {
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value = relationship.PolymorphicValue
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}
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scope.Err(newScope.SetColumn(relationship.PolymorphicType, value))
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}
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scope.Err(scope.NewDB().Save(elem).Error)
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}
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}
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}
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}
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}
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