Feat: support slice on isOneOf

baked_in.go

@@ -250,11 +250,7 @@ func isHTML(fl FieldLevel) bool {
 	return hTMLRegex.MatchString(fl.Field().String())
 }
 
-func isOneOf(fl FieldLevel) bool {
+func checkIsOneOf(field reflect.Value, vals []string) bool {
-	vals := parseOneOfParam2(fl.Param())
-
-	field := fl.Field()
-
 	var v string
 	switch field.Kind() {
 	case reflect.String:
@@ -266,6 +262,7 @@ func isOneOf(fl FieldLevel) bool {
 	default:
 		panic(fmt.Sprintf("Bad field type %T", field.Interface()))
 	}
+
 	for i := 0; i < len(vals); i++ {
 		if vals[i] == v {
 			return true
@@ -274,6 +271,24 @@ func isOneOf(fl FieldLevel) bool {
 	return false
 }
 
+func isOneOf(fl FieldLevel) bool {
+	vals := parseOneOfParam2(fl.Param())
+	field := fl.Field()
+
+	value, kind, _ := fl.ExtractType(field)
+	if kind == reflect.Slice {
+		for i := 0; i < value.Len(); i++ {
+			if !checkIsOneOf(value.Index(i), vals) {
+				return false
+			}
+		}
+
+		return true
+	}
+
+	return checkIsOneOf(field, vals)
+}
+
 // isUnique is the validation function for validating if each array|slice|map value is unique
 func isUnique(fl FieldLevel) bool {
 	field := fl.Field()

validator_test.go

@@ -5493,10 +5493,13 @@ func TestOneOfValidation(t *testing.T) {
 	}{
 		{f: "red", t: "oneof=red green"},
 		{f: "green", t: "oneof=red green"},
+		{f: []string{"red", "green"}, t: "oneof=red green"},
 		{f: "red green", t: "oneof='red green' blue"},
 		{f: "blue", t: "oneof='red green' blue"},
+		{f: []string{"red green", "blue"}, t: "oneof='red green' blue"},
 		{f: 5, t: "oneof=5 6"},
 		{f: 6, t: "oneof=5 6"},
+		{f: []int{6, 5}, t: "oneof=5 6"},
 		{f: int8(6), t: "oneof=5 6"},
 		{f: int16(6), t: "oneof=5 6"},
 		{f: int32(6), t: "oneof=5 6"},
@@ -5521,9 +5524,11 @@ func TestOneOfValidation(t *testing.T) {
 		{f: "", t: "oneof=red green"},
 		{f: "yellow", t: "oneof=red green"},
 		{f: "green", t: "oneof='red green' blue"},
+		{f: []string{"green", "blue"}, t: "oneof='red green' blue"},
 		{f: 5, t: "oneof=red green"},
 		{f: 6, t: "oneof=red green"},
 		{f: 6, t: "oneof=7"},
+		{f: []int{6, 7}, t: "oneof=7"},
 		{f: uint(6), t: "oneof=7"},
 		{f: int8(5), t: "oneof=red green"},
 		{f: int16(5), t: "oneof=red green"},