如何使用Node.js将变量传递给Jade中的页脚

Question

I have a variable I'd like to display in my footer using jade called total .

.container
    .footer
        hr(style='margin: 30px 0 10px 0;')
        p #{total} records in this database.

link(rel='stylesheet', href='/css/style.css')
script(src='/scripts/bootstrap.min.js')

block footer

However, I'm having trouble figuring out how to pass that in using Node.

I get passing a variable to a page using...

exports.index = function (req, res) {
    "use strict";
    res.render('index', { title: 'My Title' });
};

But I'm not understanding how I can do this for the footer layout.

Would I do something like this...

res.render('footer', { total: 147});

if so how do I define that route in my app.js file?

Answer 1

Any variables that you pass into res.render('index') should be available to the footer view as well.

res.render('index', {title: 'My Title', total: 147});

If you want to make a variable available in all views, you can use express locals: http://expressjs.com/api.html#app.locals

// Put this where you configure your app
app.locals.total = 147