gorm/callback_update.go

96 lines
3.1 KiB
Go

package gorm
import (
"fmt"
"strings"
)
func AssignUpdateAttributes(scope *Scope) {
if attrs, ok := scope.InstanceGet("gorm:update_interface"); ok {
if maps := convertInterfaceToMap(attrs); len(maps) > 0 {
protected, ok := scope.Get("gorm:ignore_protected_attrs")
_, updateColumn := scope.Get("gorm:update_column")
updateAttrs, hasUpdate := scope.updatedAttrsWithValues(maps, ok && protected.(bool))
if updateColumn {
scope.InstanceSet("gorm:update_attrs", maps)
} else if len(updateAttrs) > 0 {
scope.InstanceSet("gorm:update_attrs", updateAttrs)
} else if !hasUpdate {
scope.SkipLeft()
return
}
}
}
}
func BeforeUpdate(scope *Scope) {
if _, ok := scope.Get("gorm:update_column"); !ok {
scope.CallMethodWithErrorCheck("BeforeSave")
scope.CallMethodWithErrorCheck("BeforeUpdate")
}
}
func UpdateTimeStampWhenUpdate(scope *Scope) {
if _, ok := scope.Get("gorm:update_column"); !ok {
scope.SetColumn("UpdatedAt", NowFunc())
}
}
func Update(scope *Scope) {
if !scope.HasError() {
var sqls []string
if updateAttrs, ok := scope.InstanceGet("gorm:update_attrs"); ok {
for key, value := range updateAttrs.(map[string]interface{}) {
if scope.changeableDBColumn(key) {
sqls = append(sqls, fmt.Sprintf("%v = %v", scope.Quote(key), scope.AddToVars(value)))
}
}
} else {
fields := scope.Fields()
for _, field := range fields {
if scope.changeableField(field) && !field.IsPrimaryKey && field.IsNormal {
sqls = append(sqls, fmt.Sprintf("%v = %v", scope.Quote(field.DBName), scope.AddToVars(field.Field.Interface())))
} else if relationship := field.Relationship; relationship != nil && relationship.Kind == "belongs_to" {
for _, dbName := range relationship.ForeignDBNames {
if relationField := fields[dbName]; !scope.changeableField(relationField) && !relationField.IsBlank {
sql := fmt.Sprintf("%v = %v", scope.Quote(relationField.DBName), scope.AddToVars(relationField.Field.Interface()))
sqls = append(sqls, sql)
}
}
}
}
}
if len(sqls) > 0 {
scope.Raw(fmt.Sprintf(
"UPDATE %v SET %v %v",
scope.QuotedTableName(),
strings.Join(sqls, ", "),
scope.CombinedConditionSql(),
))
scope.Exec()
}
}
}
func AfterUpdate(scope *Scope) {
if _, ok := scope.Get("gorm:update_column"); !ok {
scope.CallMethodWithErrorCheck("AfterUpdate")
scope.CallMethodWithErrorCheck("AfterSave")
}
}
func init() {
DefaultCallback.Update().Register("gorm:assign_update_attributes", AssignUpdateAttributes)
DefaultCallback.Update().Register("gorm:begin_transaction", BeginTransaction)
DefaultCallback.Update().Register("gorm:before_update", BeforeUpdate)
DefaultCallback.Update().Register("gorm:save_before_associations", SaveBeforeAssociations)
DefaultCallback.Update().Register("gorm:update_time_stamp_when_update", UpdateTimeStampWhenUpdate)
DefaultCallback.Update().Register("gorm:update", Update)
DefaultCallback.Update().Register("gorm:save_after_associations", SaveAfterAssociations)
DefaultCallback.Update().Register("gorm:after_update", AfterUpdate)
DefaultCallback.Update().Register("gorm:commit_or_rollback_transaction", CommitOrRollbackTransaction)
}