interpolation_in_translations

🔢 Use Interpolation for Dynamic Content

I18n interpolation lets you insert dynamic values into translations. Define placeholders in your YAML and pass a hash to t when rendering.

# config/locales/en/greetings.en.yml
en:
  greetings:
    hello_user: "Hello, %{name}! Welcome back."

<!-- app/views/welcome/index.html.erb -->
<p><%= t('greetings.hello_user', name: current_user.name) %></p>