How can I customize Devise error message?

Question

In my password change controller, I m allowing users to change their password provided they have valid password request token.

However after they've already used one it becomes invalid and so if they want to re-use it again, the user gets an error on the model:

Reset password token is invalid

This is from Devise itself. How can modify this message to be :

User reset password token already used

If I cannot change the message via some configuration, then is there a method that would allow me to check if the token is valid or not?

So that I can manually render this message in this case

Answer 1

It's not Devise, but ActiveModel error message:

person.errors.full_message(:name, 'is invalid') # => "Name is invalid"

And you can overwrite it in your locale file.

en:
  activerecord:
    attributes:
      user:
        reset_password_token: User reset password token
    errors:
      models:
        user:
          attributes:
            reset_password_token:
              invalid: already used