Open print dialog automatically

.gitignore

@@ -108,3 +108,6 @@ bundler_stubs/*
 
 vendor/bundle/*
 *.db
+
+#ignore jetbrains ide file
+*.iml

app/views/layouts/crawler.html.erb

@@ -71,4 +71,5 @@
       <%= raw SiteCustomization.custom_body_tag(session[:preview_style]) %>
     <%- end %>
   </body>
+  <%= yield :after_body %>
 </html>

app/views/topics/show.html.erb

@@ -76,3 +76,11 @@
 <% end %>
 
 <% content_for(:title) { "#{@topic_view.page_title}" } %>
+
+<% if @topic_view.print %>
+  <% content_for :after_body do %>
+      <script>
+        window.print();
+      </script>
+  <% end %>
+<% end %>

lib/topic_view.rb

@@ -5,7 +5,7 @@ require_dependency 'gaps'
 
 class TopicView
 
-  attr_reader :topic, :posts, :guardian, :filtered_posts, :chunk_size
+  attr_reader :topic, :posts, :guardian, :filtered_posts, :chunk_size, :print
   attr_accessor :draft, :draft_key, :draft_sequence, :user_custom_fields, :post_custom_fields
 
   def self.slow_chunk_size
@@ -41,6 +41,7 @@ class TopicView
     @user = user
     @guardian = Guardian.new(@user)
     @topic = find_topic(topic_id)
+    @print = options[:print].present?
     check_and_raise_exceptions
 
     options.each do |key, value|
@@ -50,7 +51,7 @@ class TopicView
     @page = 1 if (!@page || @page.zero?)
     @chunk_size = case
                     when options[:slow_platform] then TopicView.slow_chunk_size
-                    when options[:print] then 1000
+                    when @print then 1000
                     else TopicView.chunk_size
                   end
     @limit ||= @chunk_size