old_contents: module.exports = {
      get: function(req, res) {
          var id = req.param('id');
  
          Comment.findOne({id:id}).exec(function(err, comment){
              if(err)
                  return res.json(404, {error:"db error found"});
              if(!comment)
                  return res.json(403, {error:"not found"});
  
              return res.json(200, comment);
          })
      }
  };
new_contents: module.exports = {
      get: function(req, res) {
          var id = req.param('id');
  
          Comment.findOne({id:id}).exec(function(err, comment){
              if(err)
                  return res.json(404, {error:"db error found"});
              if(!comment)
                  return res.json(403, {error:"not found"});
  
              return res.json(200, comment);
          })
  
          /*
               SELECT * 
                  FROM comments as x 
                  JOIN comments as y 
                  ON y.parentId = x.id AND x.written_to = subid
                  ORDER 
                  BY x.updatedAt, y.updatedAt; 
          */
      }
  };
subject: comment order by date and reply