X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/f46eed2ad6bc456cd57ed363e1adc8d60f802f39..fd5d197916b117386fbe872790ff6493326c4ea2:/apps/workbench/app/helpers/collections_helper.rb

diff --git a/apps/workbench/app/helpers/collections_helper.rb b/apps/workbench/app/helpers/collections_helper.rb
index f310265c96..f5f54851e7 100644
--- a/apps/workbench/app/helpers/collections_helper.rb
+++ b/apps/workbench/app/helpers/collections_helper.rb
@@ -1,3 +1,7 @@
+# Copyright (C) The Arvados Authors. All rights reserved.
+#
+# SPDX-License-Identifier: AGPL-3.0
+
 module CollectionsHelper
   def d3ify_links(links)
     links.collect do |x|
@@ -54,19 +58,21 @@ module CollectionsHelper
     file_path = "#{f0}#{file[1]}"
   end
 
-
   ##
   # Check if collection preview is allowed for the given filename with extension
   #
   def preview_allowed_for file_name
     file_type = MIME::Types.type_for(file_name).first
-
     if file_type.nil?
-      false
+      if file_name.downcase.end_with?('.cwl') # unknown mime type, but we support preview
+        true
+      else
+        false
+      end
     elsif (file_type.raw_media_type == "text") || (file_type.raw_media_type == "image")
       true
     elsif (file_type.raw_media_type == "application") &&
-          (Rails.configuration.filename_suffixes_with_view_icon.include? ((file_name.split('.')[-1]).downcase))
+          (Rails.configuration.application_mimetypes_with_view_icon.include? (file_type.sub_type))
       true
     else
       false