How to translate active record model validations

Question

When I submit a form with an error in it, it returns an error message. How can I translate these error messages with i18n? I already have translation for all the other texts in

Answer 1

The rails I18n guide covers this pretty well.

You can put the following in config/locales/nl.yml to translate the attributes:

nl:
  activerecord:
    models:
      user: "User"
    attributes:
      email: "Email"

For the error messages, ActiveRecord will look them up in the following namespaces:

activerecord.errors.models.[model_name].attributes.[attribute_name]
activerecord.errors.models.[model_name]
activerecord.errors.messages
errors.attributes.[attribute_name]
errors.messages

model, attribute and value are interpolated and available in your translations, for example:

nl:
  errors:
    messages:
      blank: "Please fill the %{model}'s %{attribute}"