CODEWITHSUNDEEP
javascriptnode.jsexpresspug
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Reputation: 4047

how can i pass a variable as global to a jade template

i want to be able to pass a global object that i will later on be use for whatever to a jade template

lets say:

app.get("/", function(req, res){

    var options = {
        chGlobal : {// this is the object i want to be a global
            "property1" : 1,
            "property2" : 2,
            "property3" : 3,
        }
    };

    jade.renderFile(__dirname +'/tpl/main.jade', options, function (err, html) {
        console.log(err, html);
        if (err)
        {
            throw err
        }
        else
        {
            res.send(html);
        }
    });
});

i would like to be able to use "chGlobal " in other scripts that are loaded. as if chGlobal was defined in the global scope.

Thanks

Upvotes: 0

Views: 3299

Answers (1)

tpae
tpae

Reputation: 6346

If you use jade as a view engine through express, like this:

app.set('views', __dirname); // this will be where your views are located.
app.set('view engine', 'jade');

You can specify local variables using res.locals.variable.

Example)

app.get("/", function(req, res){

    res.locals.options = {
        chGlobal : {// this is the object i want to be a global
            "property1" : 1,
            "property2" : 2,
            "property3" : 3,
        }
    };

    res.render('main');
});

Then in Jade, you can access options variable.

You can write a middleware to automagically append the global variables, like this:

app.get("/", registerGlobals, function(req, res) {

Then the middleware function would be:

function registerGlobals(req, res, next) {
    res.locals.options = {
        chGlobal : {// this is the object i want to be a global
            "property1" : 1,
            "property2" : 2,
            "property3" : 3,
        }
    };

    next();
}

More tutorials on how to use jade here: http://runnable.com/UTlPPF-f2W1TAAEe/render-jade-with-express-for-node-js

Upvotes: 4

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