rails i18n - translating text with links inside

Question

I\'d like to i18n a text that looks like this:

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Note that there is a link on the text. On this example

Answer 1

We had the following:

module I18nHelpers
  def translate key, options={}, &block
    s = super key, options  # Default translation
    if block_given?
      String.new(ERB::Util.html_escape(s)).gsub(/%\|([^\|]*)\|/){
        capture($1, &block)  # Pass in what's between the markers
      }.html_safe
    else
      s
    end
  end
  alias :t :translate
end

or more explicitly:

module I18nHelpers

  # Allows an I18n to include the special %|something| marker.
  # "something" will then be passed in to the given block, which
  # can generate whatever HTML is needed.
  #
  # Normal and _html keys are supported.
  #
  # Multiples are ok
  #
  #     mykey:  "Click %|here| and %|there|"
  #
  # Nesting should work too.
  #
  def translate key, options={}, &block

    s = super key, options  # Default translation

    if block_given?

      # Escape if not already raw HTML (html_escape won't escape if already html_safe)
      s = ERB::Util.html_escape(s)

      # ActiveSupport::SafeBuffer#gsub broken, so convert to String.
      # See https://github.com/rails/rails/issues/1555
      s = String.new(s)

      # Find the %|| pattern to substitute, then replace it with the block capture
      s = s.gsub /%\|([^\|]*)\|/ do
        capture($1, &block)  # Pass in what's between the markers
      end

      # Mark as html_safe going out
      s = s.html_safe
    end

    s
  end
  alias :t :translate


end

then in ApplicationController.rb just

class ApplicationController < ActionController::Base
  helper I18nHelpers

Given a key in the en.yml file like

mykey: "Click %|here|!"

can be used in ERB as

<%= t '.mykey' do |text| %>
  <%= link_to text, 'http://foo.com' %>
<% end %>

should generate

Click here!