Extract Page#headline_asset

The same related_assets.find_by(headline: true) query was written by
hand in three places -- content_helper, nodes#show, and the chapter
teaser partial (which was still using assets.first, the old
position-based rule, until now). Collapsed to one method, one query.

1 files changed, 2 insertions, 2 deletions

diff --git a/app/views/custom/partials/_chapter.html.erb b/app/views/custom/partials/_chapter.html.erb
index 47f3950c..5d47679e 100644
--- a/app/views/custom/partials/_chapter.html.erb
+++ b/app/views/custom/partials/_chapter.html.erb
@@ -1,7 +1,7 @@
 <div class="article_partial chapter_partial" lang="<%= page.effective_lang %>">
   <div class="chapter_partial_layout">
-    <% if page.assets.images.any? %>
-      <%= link_to_path image_tag(page.assets.images.first.upload.url(:thumb), :alt => ""), page.node.unique_name, class: "chapter_thumbnail" %>
+    <% if page.headline_asset %>
+      <%= link_to_path image_tag(page.headline_asset.upload.url(:thumb), :alt => ""), page.node.unique_name, class: "chapter_thumbnail" %>
     <% end %>
     <div class="chapter_partial_content">
       <h2 class="headline"><%= link_to_path page.title, page.node.unique_name %></h2>