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fix: can not set field in-place in join

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This commit is contained in:
a631807682 2022-06-13 13:32:08 +08:00
parent ebac31ea48
commit 8039ba0eb1
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GPG Key ID: 137D1D75522168AB
2 changed files with 41 additions and 10 deletions
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17
scan.go
View File

@ -66,18 +66,23 @@ func (db *DB) scanIntoStruct(rows Rows, reflectValue reflect.Value, values []int
db.RowsAffected++ db.RowsAffected++
db.AddError(rows.Scan(values...)) db.AddError(rows.Scan(values...))
joinedSchemaMap := make(map[*schema.Field]interface{}, 0)
for idx, field := range fields { for idx, field := range fields {
if field != nil { if field != nil {
if len(joinFields) == 0 || joinFields[idx][0] == nil { if len(joinFields) == 0 || joinFields[idx][0] == nil {
db.AddError(field.Set(db.Statement.Context, reflectValue, values[idx])) db.AddError(field.Set(db.Statement.Context, reflectValue, values[idx]))
} else { } else {
relValue := joinFields[idx][0].ReflectValueOf(db.Statement.Context, reflectValue) joinSchema := joinFields[idx][0]
if relValue.Kind() == reflect.Ptr && relValue.IsNil() { relValue := joinSchema.ReflectValueOf(db.Statement.Context, reflectValue)
if value := reflect.ValueOf(values[idx]).Elem(); value.Kind() == reflect.Ptr && value.IsNil() { if relValue.Kind() == reflect.Ptr {
continue if _, ok := joinedSchemaMap[joinSchema]; !ok {
} if value := reflect.ValueOf(values[idx]).Elem(); value.Kind() == reflect.Ptr && value.IsNil() {
continue
}
relValue.Set(reflect.New(relValue.Type().Elem())) relValue.Set(reflect.New(relValue.Type().Elem()))
joinedSchemaMap[joinSchema] = nil
}
} }
db.AddError(joinFields[idx][1].Set(db.Statement.Context, relValue, values[idx])) db.AddError(joinFields[idx][1].Set(db.Statement.Context, relValue, values[idx]))
} }

34
tests/query_test.go
View File

@ -1260,6 +1260,11 @@ func TestQueryScannerWithSingleColumn(t *testing.T) {
} }
func TestQueryResetNullValue(t *testing.T) { func TestQueryResetNullValue(t *testing.T) {
type QueryResetItem struct {
ID string `gorm:"type:varchar(5)"`
Name string
}
type QueryResetNullValue struct { type QueryResetNullValue struct {
ID int ID int
Name string `gorm:"default:NULL"` Name string `gorm:"default:NULL"`
@ -1268,10 +1273,14 @@ func TestQueryResetNullValue(t *testing.T) {
Number2 uint64 `gorm:"default:NULL"` Number2 uint64 `gorm:"default:NULL"`
Number3 float64 `gorm:"default:NULL"` Number3 float64 `gorm:"default:NULL"`
Now *time.Time `gorm:"defalut:NULL"` Now *time.Time `gorm:"defalut:NULL"`
Item1Id string
Item1 *QueryResetItem `gorm:"references:ID"`
Item2Id string
Item2 *QueryResetItem `gorm:"references:ID"`
} }
DB.Migrator().DropTable(&QueryResetNullValue{}) DB.Migrator().DropTable(&QueryResetNullValue{}, &QueryResetItem{})
DB.AutoMigrate(&QueryResetNullValue{}) DB.AutoMigrate(&QueryResetNullValue{}, &QueryResetItem{})
now := time.Now() now := time.Now()
q1 := QueryResetNullValue{ q1 := QueryResetNullValue{
@ -1281,9 +1290,26 @@ func TestQueryResetNullValue(t *testing.T) {
Number2: 200, Number2: 200,
Number3: 300.1, Number3: 300.1,
Now: &now, Now: &now,
Item1: &QueryResetItem{
ID: "u_1_1",
Name: "item_1_1",
},
Item2: &QueryResetItem{
ID: "u_1_2",
Name: "item_1_2",
},
} }
q2 := QueryResetNullValue{} q2 := QueryResetNullValue{
Item1: &QueryResetItem{
ID: "u_2_1",
Name: "item_2_1",
},
Item2: &QueryResetItem{
ID: "u_2_2",
Name: "item_2_2",
},
}
var err error var err error
err = DB.Create(&q1).Error err = DB.Create(&q1).Error
@ -1297,7 +1323,7 @@ func TestQueryResetNullValue(t *testing.T) {
} }
var qs []QueryResetNullValue var qs []QueryResetNullValue
err = DB.Find(&qs).Error err = DB.Joins("Item1").Joins("Item2").Find(&qs).Error
if err != nil { if err != nil {
t.Errorf("failed to find:%v", err) t.Errorf("failed to find:%v", err)
} }