Added icons for non-image Assets

app/helpers/smithy/assets_helper.rb

@@ -5,5 +5,26 @@ def asset_image_tag(asset_id)
       return unless asset
       image_tag(asset.file.url(:host => "#{request.protocol}#{request.host_with_port}"), :alt => asset.name)
     end
+
+    def file_type_icon(asset)
+      case asset.file_type
+      when :image
+        nil
+      when :pdf
+        'smithy/icons/pdf.png'
+      when :word
+        'smithy/icons/doc.png'
+      when :excel
+        'smithy/icons/xls.png'
+      when :powerpoint
+        'smithy/icons/ppt.png'
+      when :text
+        'smithy/icons/txt.png'
+      when :document
+        'smithy/icons/_page.png'
+      when :default
+        'smithy/icons/_blank.png'
+      end
+    end
   end
 end

app/models/smithy/asset.rb

@@ -27,6 +27,28 @@ def file
       dragonfly_attachments[:file].to_value
     end
 
+    def file_type
+      ext = File.extname(file.name).sub(/^\./, '')
+      case ext
+      when 'jpg', 'jpeg', 'gif', 'png'
+        :image
+      when 'pdf'
+        :pdf
+      when 'doc', 'docx'
+        :word
+      when 'xls', 'xlsx'
+        :excel
+      when 'ppt', 'pps', 'pptx', 'ppsx'
+        :powerpoint
+      when 'txt'
+        :text
+      when 'rtf'
+        :document
+      else
+        :default
+      end
+    end
+
     def to_liquid
       {
         'id' => self.id,

app/views/smithy/assets/_asset.html.erb

@@ -1,6 +1,12 @@
 <li>
   <div class="thumbnail clearfix">
-    <%= link_to "<img src=\"#{asset.file.thumb("170x114#").url}\" width=\"170\" height=\"114\" alt=\"\">".html_safe, asset.file.url %>
+    <%= link_to asset.file.remote_url do %>
+      <% if asset.file_type == :image %>
+        <%= image_tag asset.file.thumb("170x114#").url, width: 170, height: 114, alt: '' %>
+      <% else %>
+        <div style="width:170px;height:78px;padding-top:36px;text-align:center;"><%= image_tag file_type_icon(asset), alt: '' %></div>
+      <% end %>
+    <% end %>
     <p class="name"><strong><%= asset.name %></strong></p>
     <div class="pull-right">
       <%= link_to "Edit", [:edit, asset], :class => "btn btn-mini" %>