How to set a variable for the main handlebars layout without passing it to every route?
ExpressJS provides some kind of "global variables". They are mentioned in the docs: app.locals. To include it in every response you could do something like this:
app.locals.copyright = '2014';
For this case, you can alternatively create a Handlebars helper. Like this:
var Handlebars = require('handlebars');Handlebars.registerHelper('copyrightYear', function() { var year = new Date().getFullYear(); return new Handlebars.SafeString(year);});In the templates, just use it as before:
© {{copyrightYear}} Meadowlark Travel
Using express-handlebars is just a little bit different:
var handlebars = require('express-handlebars').create({ defaultLayout:'main', helpers: { copyrightYear: function() { return new Date().getFullYear(); }, }});