No route matches [GET] "/links/www.twitter.com.au" - ruby-on-rails

Question

Hello building a reddit clone.
When i click on this link found here http://postimg.org/delete/saq41zozs/ it should go another website. In this case it's www.twitter.com.au
Error found here http://postimg.org/delete/uhlsxso1e/
Im guessing because i don't have a twitter.com route. I don't know how to set it up so it routes to twitter.com
Here's my routes.rb.
Rails.application.routes.draw do
resources :comments
devise_for :users
resources :links do
member do
put "like", to: "links#upvote"
put "dislike", to: "links#downvote"
end
resources :comments
end
root "links#index"
Here is my show.html.erb
<div class="page-header">
<h1><%= #link.title %><br> <small>Submitted by <%= #link.user.name %></small></h1>
</div>
<div class="btn-group">
<%= link_to 'Visit URL', #link.url, class: "btn btn-primary" %>
</div>
<div class="btn-group pull-right">
<%= link_to like_link_path(#link), method: :put, class: "btn btn-default btn-sm" do %>
<span class="glyphicon glyphicon-chevron-up"></span>
Upvote
<%= #link.get_upvotes.size %>
<% end %>
<%= link_to dislike_link_path(#link), method: :put, class: "btn btn-default btn-sm" do %>
<span class="glyphicon glyphicon-chevron-down">
Downvote
<%= #link.get_downvotes.size %>
<% end %>
</div>
<% if #link.user == current_user -%>
<div class="btn-group">
<%= link_to 'Edit', edit_link_path(#link), class: "btn btn-default" %>
<%= link_to 'Destroy', #link, method: :delete, data: { confirm: 'Are you sure?' }, class: "btn btn-default" %>
</div>
<% end %>
<h3 class="comments_title">
<%= #link.comments.count %> Comments
</h3>
<div id="comments">
<%= render :partial => #link.comments %>
</div>
<%= simple_form_for [#link, Comment.new] do |f| %>
<div class="field">
<%= f.text_area :body, class: "form-control" %>
</div>
<br>
<%= f.submit "Add Comment", class: "btn btn-primary" %>
<% end %>

Answer 1

As you are linking to an external site, as opposed to a relative url, you need to prepend your link with 'http'. Just change the link in question to:
<div class="page-header">
<h1><%= link_to #link.title, "http://#{#link.url}" %><br> <small>Submitted by <%= #link.user.name %></small></h1>
</div>