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https://github.com/go-gorm/gorm/issues/4296

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There is no data to update when updating data, the update time should not change
This commit is contained in:
yiranzai 2021-04-17 21:57:45 +08:00
parent 7701c88507
commit 01dd7167a9
1 changed files with 12 additions and 0 deletions
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12
callbacks/update.go
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@ -165,6 +165,7 @@ func ConvertToAssignments(stmt *gorm.Statement) (set clause.Set) {
switch value := updatingValue.Interface().(type) {
case map[string]interface{}:
var updateAtFieldName string
set = make([]clause.Assignment, 0, len(value))
keys := make([]string, 0, len(value))
@ -206,6 +207,7 @@ func ConvertToAssignments(stmt *gorm.Statement) (set clause.Set) {
now := stmt.DB.NowFunc()
assignValue(field, now)
updateAtFieldName = field.DBName
if field.AutoUpdateTime == schema.UnixNanosecond {
set = append(set, clause.Assignment{Column: clause.Column{Name: field.DBName}, Value: now.UnixNano()})
} else if field.AutoUpdateTime == schema.UnixMillisecond {
@ -219,9 +221,14 @@ func ConvertToAssignments(stmt *gorm.Statement) (set clause.Set) {
}
}
}
// This method only works if there is only one AutoUpdateTime field
if len(set) == 1 && set[0].Column.Name == updateAtFieldName {
return set[0:0]
}
default:
switch updatingValue.Kind() {
case reflect.Struct:
var updateAtFieldName string
set = make([]clause.Assignment, 0, len(stmt.Schema.FieldsByDBName))
for _, dbName := range stmt.Schema.DBNames {
field := stmt.Schema.LookUpField(dbName)
@ -229,6 +236,7 @@ func ConvertToAssignments(stmt *gorm.Statement) (set clause.Set) {
if v, ok := selectColumns[field.DBName]; (ok && v) || (!ok && (!restricted || (!stmt.SkipHooks && field.AutoUpdateTime > 0))) {
value, isZero := field.ValueOf(updatingValue)
if !stmt.SkipHooks && field.AutoUpdateTime > 0 {
updateAtFieldName = field.DBName
if field.AutoUpdateTime == schema.UnixNanosecond {
value = stmt.DB.NowFunc().UnixNano()
} else if field.AutoUpdateTime == schema.UnixMillisecond {
@ -252,6 +260,10 @@ func ConvertToAssignments(stmt *gorm.Statement) (set clause.Set) {
}
}
}
// This method only works if there is only one AutoUpdateTime field
if len(set) == 1 && set[0].Column.Name == updateAtFieldName {
return set[0:0]
}
default:
stmt.AddError(gorm.ErrInvalidData)
}