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node.js - How to use node modules (like MomentJS) in EJS views?

问题描述:

To use MomentJS in views/custom.ejs, what is the correct way (if any)?

  1. Server side

    routes/index etc we can easily use require('moment'); etc and it works fine.

  2. Server Side (EJS views)

    views/custome.ejs, something like <% var m = require('moment'); %> doesn't work

I am using ExpressJS with EJS as the template engine.

网友答案:

I found another way of doing this, and I think it has some advantages.

  • Don't polute your code exporting filters.
  • Access any method without the need to export them all.
  • Better ejs usage (no | pipes).

On your controller, or view.js do this:

var moment = require('moment');
exports.index = function(req, res) {
    // send moment to your ejs
    res.render('index', { moment: moment });
}

Now you can use moment inside your ejs:

<html>
    <h1><%= moment().fromNow() %></h1>
</html>

I'm not an Node expert, so if anyone see something bad on doing this, let me know! :)

网友答案:

One more option:

This way you are setting the moment variable to a local available to all scripts in any EJS page on your site.

In your "index.js" (or "app.js") file do this: (after you have set up your 'app' with Express)

var moment = require('moment');
var shortDateFormat = "ddd @ h:mmA"; // this is just an example of storing a date format once so you can change it in one place and have it propagate
app.locals.moment = moment; // this makes moment available as a variable in every EJS page
app.locals.shortDateFormat = shortDateFormat;

Then in your EJS file you can refer to moment (and shortDateFormat) as variables like this:

<%= moment(Date()).format(shortDateFormat) %>

Perhaps this is slightly more elegant?

网友答案:

I use moment on the server side with ejs. I wrote an ejs filter function that will return fromNow.

npm install moment

./views/page.ejs

<span class="created_at"><%=: item.created_at | fromNow %></span>

./routes/page.js

var ejs = require('ejs')
  , moment = require('moment');

ejs.filters.fromNow = function(date){
  return moment(date).fromNow()
}
网友答案:

The server side (EJS views) which you mentioned above is running on browser and not on your server. You cannot use require because browsers cannot understand it. You need to import the moment.js to use it

<script src="/js/moment.min.js"></script>
网友答案:

You can create the function and attach it to the app.locals. and use it in the ejs template on the server side.

In your routes file you do

../routes/page.js

var ejs = require('ejs')
  , moment = require('moment');

app.locals.fromNow = function(date){
  return moment(date).fromNow();
}

../views/page.ejs

<span class="created_at"><%= fromNow(item.created_at) %></span>

Just remember to have moment added to to your package.json file

网友答案:

also i think it is good idea if you want you can add a middle-ware where you can add anything you want to the theme layer including user,config and moment:

// config, user, moment to the theme layer
app.use(function (req, res, next) {
    // grab reference of render
    var _render = res.render;
    // override logic
    res.render = function (view, options, fn) {
        // extend config and continue with original render
        options = options || {};
        options.config = config;
        options.moment = moment;
        if (req.user && req.user.toJSON) {
            options.user = req.user.toJSON();
        }
        _render.call(this, view, options, fn);
    }
    next();
});
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