在 mongoose 的 findOne 条件下操作数据

Question

I want to convert title in also lower case without considering space inside findOne conditions so that i can compare it with requested title. New Post => newpost want to convert like this:

 app.get("/posts/:postName", function(req, res){
      const requestedTitle = _.lowerCase(req.params.postName);
      
      Post.findOne({**title : requestedTitle**}, function(err, post){
        if (!err) {
            res.render("post", {
              title: post.title,
              content: post.body
            });
          }
        });
    });

Answer 1

You can use .replace(/ /g, '') to delete all space, then you can use .toLowerCase() to lowercase the title.

Example code:

const requestedTitle = req.params.postName.replace(/ /g, '').toLowerCase();