Metadata API + Custom Label Translation

Question

Hello Salesforce experts!

I would like to dynamically create "CustomLabelTranslation" using Metadata API. I am able to retrieve the translated value using specific language, but not able to then set that value for different label. Please see the code below, it is working upto first debug statement.

Example, consider I have 2 labels, I would like to dynamically set translated value from myLabel_1 into myLabel_2

Label 1: Name=myLabel_1, Language='en_US', translatedValue='Hello'

Label 2: Name=myLabel_2, Language='en_US', translatedValue=Label.translatedValue

One obvious reason why this will not work is there is no "Language" tag for CustomLabelTranslation, so not sure how the system is going to understand which language is the value for.

// Read Translation
Map<String, String> labelMapping = new Map<String, String>{'SourceLabelName' => 'TargetLabelName'};
String language = 'da';
MetadataService.Translations translations =
   (MetadataService.Translations) service.readMetadata('Translations',new String[] { language }).getRecords()[0];
for(MetadataService.CustomLabelTranslation customLabelTranslation : translations.customLabels) {
    if(labelMapping.containsKey(customLabelTranslation.name)) {
        String sourceLabel = customLabelTranslation.name;
        String targetLabel = labelMapping.get(sourceLabel);
        String translatedValue = customLabelTranslation.label;
        if(String.isNotBlank(translatedValue)) {

        // -------  Working --------- //
        System.debug('Language ' + language + '. Translation for ' + sourceLabel + ' is ' + translatedValue);


        // ------- Not Working --------- //

        //Insert translated value from source to target label

        List<MetadataService.Metadata> allMetadataList = new List<MetadataService.Metadata>();
        MetadataService.CustomLabelTranslation clTranslation = new MetadataService.CustomLabelTranslation();
        clTranslation.name = targetLabel;
        clTranslation.label = translatedValue;
        //clTranslation.language = language; //There is no language attribute on CustomLabelTranslation
        allMetadataList.add(clTranslation);
        List<MetadataService.SaveResult> results = service.updateMetadata(allMetadataList);
        for(MetadataService.SaveResult result: results){
            system.debug('Insert custom label translation results success=' + result.success);
        }    

        // ------- Not Working --------- //            

    }
}

}

Answer 1

Let's say we have such a Custom Label:

We want to add French translation for this label. Using same Apex library (apex-mdapi) code will look like this:

 public static void updateTranslation() {

    MetadataService.MetadataPort service = createService();

    // Read whole Translation for given language - in this case french
    MetadataService.Translations translations = (MetadataService.Translations) service.readMetadata('Translations',
            new String[] { 'fr_CA' }).getRecords()[0];

    //Add new custom label translation
    MetadataService.CustomLabelTranslation customLabelTranslation = new MetadataService.CustomLabelTranslation();
    customLabelTranslation.label = 'Text in French'; // new value in french
    customLabelTranslation.name = 'SomeCustomLabel'; // name of the custom label we want to translate

    //Clear custom labels and add only these ones you want to add
    translations.customLabels = new List<MetadataService.CustomLabelTranslation>();
    translations.customLabels.add(customLabelTranslation);

    //Clear rest of translations
    translations.customApplications = new List<MetadataService.CustomApplicationTranslation>();
    translations.customDataTypeTranslations = new List<MetadataService.CustomDataTypeTranslation>();
    translations.customPageWebLinks = new List<MetadataService.CustomPageWebLinkTranslation>();
    translations.customTabs = new List<MetadataService.CustomTabTranslation>();
    translations.flowDefinitions = new List<MetadataService.FlowDefinitionTranslation>();
    translations.quickActions = new List<MetadataService.GlobalQuickActionTranslation>();
    translations.reportTypes = new List<MetadataService.ReportTypeTranslation>();
    translations.scontrols = new List<MetadataService.ScontrolTranslation>();

    // Update
    handleSaveResults(service.updateMetadata(new List<MetadataService.Metadata> { translations })[0]);
}

And the result:

Hope this solution will help someone !