Improve UI of config-diff

app/controllers/concerns/setting_history_concern.rb

@@ -8,9 +8,9 @@ module SettingHistoryConcern
   end
 
   def show
-    @current = @fluentd.agent.config
+    current = @fluentd.agent.config
     target = @backup_file.content
-    @sdiff = Diff::LCS.sdiff(@current.split("\n").map(&:rstrip), target.split("\n").map(&:rstrip))
+    @sdiff = Diff::LCS.sdiff(current.split("\n").map(&:rstrip), target.split("\n").map(&:rstrip))
   end
 
   def reuse

app/views/fluentd/settings/histories/show.html.haml

@@ -14,21 +14,20 @@
       %p= @backup_file.note.content
 
 .row
-  .col-xs-6
-    %h2 Current
-    %pre
-      = preserve do
-        = @current
-  .col-xs-6
-    %h2 Target
+  .col-xs-12
+    %h2
+      ="Target Config(#{params[:id]})"
     %pre
       = preserve do
         = @backup_file.content
 
   .col-xs-12.diff
     %h2
-      Diff: 
-      current
-      = ".."
-      = params[:id]
+      Diff:
+    %p
+      diff between
+      = " "
+      = link_to "current conf", daemon_setting_path(@fluentd)
+      = " and "
+      = "target conf(#{params[:id]})"
     = preserve render "diff"