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feat: copy dest fields to model struct

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riverchu 2021-09-05 23:12:24 +08:00 committed by Jinzhu
parent 4581e8b590
commit eaa63d15e7
1 changed files with 28 additions and 1 deletions
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29
callbacks/update.go
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@ -23,11 +23,38 @@ func SetupUpdateReflectValue(db *gorm.DB) {
rel.Field.Set(db.Statement.ReflectValue, dest[rel.Name])
}
}
} else if modelType, destType := findType(db.Statement.Model), findType(db.Statement.Dest); modelType.Kind() == reflect.Struct && destType.Kind() == reflect.Struct {
db.Statement.Dest = transToModel(reflect.Indirect(reflect.ValueOf(db.Statement.Dest)), reflect.New(modelType).Elem())
}
}
}
}
func findType(target interface{}) reflect.Type {
t := reflect.TypeOf(target)
if t.Kind() == reflect.Ptr {
return t.Elem()
}
return t
}
func transToModel(from, to reflect.Value) interface{} {
if from.String() == to.String() {
return from.Interface()
}
fromType := from.Type()
for i := 0; i < fromType.NumField(); i++ {
fieldName := fromType.Field(i).Name
fromField, toField := from.FieldByName(fieldName), to.FieldByName(fieldName)
if !toField.IsValid() || !toField.CanSet() || toField.Kind() != fromField.Kind() {
continue
}
toField.Set(fromField)
}
return to.Interface()
}
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) {
@ -227,7 +254,7 @@ func ConvertToAssignments(stmt *gorm.Statement) (set clause.Set) {
set = make([]clause.Assignment, 0, len(stmt.Schema.FieldsByDBName))
for _, dbName := range stmt.Schema.DBNames {
field := stmt.Schema.LookUpField(dbName)
if !field.PrimaryKey || (!updatingValue.CanAddr() || stmt.Dest != stmt.Model) {
if !field.PrimaryKey || !updatingValue.CanAddr() || stmt.Dest != stmt.Model {
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 {