fix

callbacks/update.go

@@ -1,6 +1,7 @@
 package callbacks
 
 import (
+	"fmt"
 	"reflect"
 	"sort"
 
@@ -33,13 +34,13 @@ func SetupUpdateReflectValue(db *gorm.DB) {
 func BeforeUpdate(db *gorm.DB) {
 	if db.Error == nil && db.Statement.Schema != nil && !db.Statement.SkipHooks && (db.Statement.Schema.BeforeSave || db.Statement.Schema.BeforeUpdate) {
 		callMethod(db, func(value interface{}, tx *gorm.DB) (called bool) {
-			// rv := reflect.ValueOf(value)
-			// for rv.Kind() == reflect.Ptr {
-			// 	rv = rv.Elem()
-			// }
-			// // save a copy before executing the hook so that can find out which fields were modified after the hook is executed.
-			// rvClone := reflect.New(rv.Type()).Elem()
-			// rvClone.Set(rv)
+			rv := reflect.ValueOf(value)
+			for rv.Kind() == reflect.Ptr {
+				rv = rv.Elem()
+			}
+			// save a copy before executing the hook so that can find out which fields were modified after the hook is executed.
+			rvClone := reflect.New(rv.Type()).Elem()
+			rvClone.Set(rv)
 
 			if db.Statement.Schema.BeforeSave {
 				if i, ok := value.(BeforeSaveInterface); ok {
@@ -55,18 +56,20 @@ func BeforeUpdate(db *gorm.DB) {
 				}
 			}
 
-			// if called {
-			// 	fields := db.Statement.Schema.Fields
-			// 	for i := 0; i < len(fields); i++ {
-			// 		if fields[i].PrimaryKey {
-			// 			continue
-			// 		}
-			// 		// compare with the copy value and update the field if there is a difference
-			// 		if !reflect.DeepEqual(rv.FieldByName(fields[i].Name).Interface(), rvClone.FieldByName(fields[i].Name).Interface()) {
-			// 			db.Statement.SetColumn(fields[i].DBName, rv.Field(i).Interface())
-			// 		}
-			// 	}
-			// }
+			if called {
+				fields := db.Statement.Schema.Fields
+				for i := 0; i < len(fields); i++ {
+					if fields[i].PrimaryKey {
+						continue
+					}
+
+					// compare with the copy value and update the field if there is a difference
+					if !reflect.DeepEqual(rv.FieldByName(fields[i].Name).Interface(), rvClone.FieldByName(fields[i].Name).Interface()) {
+						fmt.Println(rv.FieldByName(fields[i].Name).Interface(), rvClone.FieldByName(fields[i].Name).Interface())
+						db.Statement.SetColumn(fields[i].DBName, rv.Field(i).Interface())
+					}
+				}
+			}
 			return called
 		})
 	}