在node.js中呈现页面之前将数据传递给服务器？

Question

After a user login, the data is stored on a client side.

There are some pages which don't require a logged user to be viewed...

for example, I have a route on node.js which render a profile page through a URL parameter.

app.get("Profile/:id",function(req,res){ //render page and send it.}

anyone can see this page... but here is the situation... in my app, users can post notes on this pages so they can see it later. So the idea is, if a user is logged in when the user access that page he can see all his notes.

the data of the notes are in server side.

So my question is... how can I pass the user data into app.get("profile/:id "... function so that the notes can be loaded and sent when is rendered ...

one thing is important to be known. I have a solution in wich I pass a unique key though the url which references to the active socket of the user so that the data is post on a json, is there any other way to pass data from client to server before the page is rendered?

Answer 1

After several days I have manage to achieve the resolution of this question

The idea is to have a Session tipe variable like $_SESSION in php.

you need express-session npm and assign session on require parameter on a express post function. After you have set a value, every time that browser change from location, you can extract that same session variable and use the data to post a response when you are rendering.

I used ejs to render.

In the next link, there is a full tutorial to achieve this.

https://codeforgeek.com/2014/09/manage-session-using-node-js-express-4/