Wt

I use the following simple template:

<hr/>
${title}
<hr/><br/>

${tr:preferences-select-lang-label} ${lang-select}

<hr/>

which is used as follows:

    auto template_widget = std::make_unique<Wt::WTemplate>();
    template_widget->addFunction("tr", &Wt::WTemplate::Functions::tr);
    template_widget->setTemplateText(loadTemplate("language_select.tpl"));
    (...)

    auto langCombo = std::make_unique<Wt::WComboBox>();
    (...)
    langCombo->sactivated().connect(this, &LanguagePage::languageChanged);
    template_widget->bindWidget("lang-select", std::move(langCombo));

    addWidget(std::move(template_widget));

When the user selects another language with the combobox, the Wt application calls

    Wt::WApplication::instance()->setLocale(Wt::WLocale(newLocale));

After this, the text of the preferences-select-lang-label item is not translated yet in the web browser.

Only after the user refreshes the web page, the correct translation is shown.

I tested this with both Firefox 52.4.0 and Chrome 58.0.3029.110 on Linux.

If there is no solution to update the translation without refresh, then it would be nice if this will be mentioned in the WTemplate documentation.