Add build option flag TranslateTitle (#15)

Author: tiendc

app_error.go

@@ -175,6 +175,7 @@ func (e *defaultAppError) BuildConfig(lang Language, options ...InfoBuilderOptio
 		Language:        lang,
 		ErrorSeparator:  globalConfig.MultiErrorSeparator,
 		TranslationFunc: globalConfig.TranslationFunc,
+		TranslateTitle:  true,
 		FallbackToErrorContentOnMissingTranslation: globalConfig.FallbackToErrorContentOnMissingTranslation,
 	}
 	for _, opt := range options {
@@ -253,7 +254,7 @@ func (e *defaultAppError) buildMessage(buildCfg *InfoBuilderConfig, result *Info
 		}
 	}
 
-	if title != "" {
+	if buildCfg.TranslateTitle && title != "" {
 		transTitle, err := buildCfg.TranslationFunc(buildCfg.Language, title, params)
 		if err != nil {
 			result.TransMissingKeys = append(result.TransMissingKeys, title)

error_info.go

@@ -25,6 +25,7 @@ type InfoBuilderConfig struct {
 	Language                                   Language
 	ErrorSeparator                             string
 	TranslationFunc                            TranslationFunc
+	TranslateTitle                             bool
 	FallbackToErrorContentOnMissingTranslation bool
 }
 
@@ -62,6 +63,13 @@ func InfoBuilderOptionTranslationFunc(translationFunc TranslationFunc) InfoBuild
 	}
 }
 
+// InfoBuilderOptionTranslateTitle sets flag indicating title translation
+func InfoBuilderOptionTranslateTitle(translateTitle bool) InfoBuilderOption {
+	return func(cfg *InfoBuilderConfig) {
+		cfg.TranslateTitle = translateTitle
+	}
+}
+
 // InfoBuilderOptionSeparator sets custom content separator
 func InfoBuilderOptionSeparator(errorSeparator string) InfoBuilderOption {
 	return func(cfg *InfoBuilderConfig) {

error_info_test.go

@@ -23,6 +23,9 @@ func Test_InfoBuilderOption(t *testing.T) {
 	})(buildConfig)
 	assert.NotNil(t, buildConfig.TranslationFunc)
 
+	InfoBuilderOptionTranslateTitle(true)(buildConfig)
+	assert.True(t, buildConfig.TranslateTitle)
+
 	InfoBuilderOptionSeparator("abc123")(buildConfig)
 	assert.Equal(t, "abc123", buildConfig.ErrorSeparator)