加个数组判断

app/helpers/projects_helper.rb

@@ -258,7 +258,8 @@ module ProjectsHelper
     end
   end
 
-  def rolesToLanguage rolesArray 
+  def rolesToLanguage rolesArray
+    rolesArray = ([] << rolesArray) unless rolesArray.is_a?(Array)
     rolesArray.map{ |roleName|
       case roleName
       when "Manager"