lis2 · July 3, 2014 02:06 · Jul 3, 2014
diff --git a/gistfile1.rb b/gistfile1.rb
@@ -0,0 +1,11 @@
+{:title => 'Anchor date:', :result => fields_to_na(try_chain(@selected_band, :anchor_on, :to_au))}
+
+  def fields_to_na(data)
+    return 'N/A' if data.blank?
+    return yield(data) if block_given?
+    data
+  end
+
+  def try_chain(object, *methods)
+    methods.inject(object) {|o, a| o.send(:try, a) }
+  end