Validation: remove suffix '[]' from n-dimensional array elements fiel…

…d name in error messages

service.go

@@ -14,5 +14,3 @@ type Service interface {
 	// to retrieve the service.
 	Name() string
 }
-
-// TODO Document why Service, why repository, how they are initialized, etc

validation/validator.go

@@ -590,7 +590,13 @@ func translateFieldName(lang *lang.Language, fieldName string) string {
 	if i := strings.LastIndex(fieldName, "."); i != -1 {
 		fieldName = fieldName[i+1:]
 	}
-	fieldName = strings.TrimSuffix(fieldName, "[]")
+	for {
+		f := strings.TrimSuffix(fieldName, "[]")
+		if len(f) == len(fieldName) {
+			break
+		}
+		fieldName = f
+	}
 	entry := "validation.fields." + fieldName
 	name := lang.Get(entry)
 	if name == entry {

validation/validator_test.go

@@ -507,7 +507,7 @@ func TestValidate(t *testing.T) {
 						Elements: ArrayErrors{
 							0: &Errors{
 								Elements: ArrayErrors{
-									1: &Errors{Errors: []string{"The narray[] elements must be integers."}}, // TODO should the "[]" be completely removed?
+									1: &Errors{Errors: []string{"The narray elements must be integers."}},
 								},
 							},
 						},
@@ -641,7 +641,7 @@ func TestValidate(t *testing.T) {
 						Elements: ArrayErrors{
 							0: &Errors{
 								Elements: ArrayErrors{
-									1: &Errors{Errors: []string{"The narray[] elements must be integers."}},
+									1: &Errors{Errors: []string{"The narray elements must be integers."}},
 									2: &Errors{Errors: []string{"merge err"}},
 								},
 							},