Rails/Devise - Customize flash message (devise.en.yml) with a link_to

I would like to customize the following flash msg provided by devise in the devise.en.yml file:

devise:
   failure:
      unconfirmed: 'You have to confirm your account before continuing.'

with ruby code in order to get a link to new_user_confirmation_path.

in other words, I want my flash message displays something like :

'You have to confirm your account before continuing. Didn't receive confirm开发者_运维技巧ation instructions?'

where 'Didn't receive confirmation instructions?' is a link to new_user_confirmation_path.

I would like to know if I can do this without editing the user controller cause Devise doesn't provide it by default.

Thanks for your answer!

new_user_confirmation_path is a static url equivalent to /users/confirmation/new

So you can just do this in your devise.en.yml file:

devise:
  failure:
    unconfirmed: "You have to confirm your account before continuing. <a href='/users/confirmation/new'>Didn't receive confirmation instructions?</a>"

In the controller actions where you display your flash make sure you have .html_safe e.g. flash[:error].html_safe

In one of my apps I am using Devise and CanCan. I rescue from CanCan's errors with something like the following in my application conroller.

rescue_from CanCan::AccessDenied do |exception|
  if current_user
    flash[:error] = exception.message
    redirect_to root_url
  else
    flash[:error] = t("devise.failure.unauthenticated")
    redirect_to new_user_session_path
  end
end

Perhaps you could do something similar and rescue from Devise? Your flash message could then be something like:

flash[:error] = t("devise.failure.unconfirmed") + link_to "Didn't receive confirmation instructions?", new_user_confirmation_path

Even better would be to put the "Didn't receive..." in it's own translation yml if need be.

I think the right way for Rails 3 & Rails 4 to add required links and other information to Devise flash messages is to write your own Devise::FailureApp:

# lib/custom_failure.rb
class CustomFailure < Devise::FailureApp
  def i18n_options(options)
    path = Rails.application.routes.url_helpers.new_user_confirmation_path
    link = ActionController::Base.helpers.link_to(I18n.t('.unconfirmed_link_text', options), path)

    super(options).merge(new_user_confirmation_link: link)
  end
end

And add interpolation to translations:

devise:
  failure:
    unconfirmed: You have to confirm your account before continuing.%{new_user_confirmation_link}
    unconfirmed_link_text: Didn't receive confirmation instructions?

don't forget to add to config/initializers/devise.rb:

config.warden do |manager|
  manager.failure_app = CustomFailure
end

If I'm understand put question right the bit of code t('devise...you must place to our view, where you want to show this message.

For example devise/new.erb:

<%= t('devise.failure.unconfirmed',
      :confirm_link => link_to(
        t('devise.failure.confirm_link_text'),
        new_user_confirmation_path).html_safe
      ) unless user.confirmed %>

You can also do it in your devise specific layout: app/views/layouts/devise.html.slim

- flash.each do |type, message| 
  - if ['alert', 'error', 'notice'].include?(type.to_s)
    .alert-box class=type
      => message
      - case message
      - when t('devise.failure.unauthenticated')
        = link_to "Forgot your password?", new_password_path(resource_name)
      - when t('devise.failure.unconfirmed')
        = link_to "Didn't receive confirmation instructions?", new_confirmation_path(resource_name)
      - when t('devise.failure.locked')
        - if resource_class.unlock_strategy_enabled?(:email) 
          = link_to "Didn't receive unlock instructions?", new_unlock_path(resource_name)