link_to and other view helpers not included with EJS (bundled with Express) for Node.js?

问题

I've set up a nodeJS server using the Express web framework, using the EJS template engine.

When I try to use the EJS link_to view helper inside a view, I get a reference error. Is this because I am doing something wrong, or are the view helpers just not included?

I've tried the following

<# link_to("...", "...") #>

<#= link_to("...", "...") #>

<#- link_to("...", "...") #>

Note: I've configured custom tags for EJS...

server.configure(function ()
{
    this.set("view engine", "ejs");
    this.set("view options", { open: "<#", close: "#>" });
});

回答1:

try :

var helpers = require('express-helpers')

and then

helpers(app);

in your app.js if still not working, try <%- link_to instead of <%= link_to

回答2:

Add https://github.com/mhayashi/express-helpers , that should solve the problem..

Had some problems with their : require('express-helpers').all function though, rolled my own. Besides that it works fine.

回答3:

Thank you @user-S and @mujaffars Just to write all the steps in one place,

1. Install express-helpers.

npm install --save express-helpers

2. In app.js, write

var expressHelpers = require('express-helpers');expressHelpers(app);

3. Use it in ejs in this way,

Using <%= instead of <%- just displays the generated html anchor tag which is not we usually want.

来源：https://stackoverflow.com/questions/5553554/link-to-and-other-view-helpers-not-included-with-ejs-bundled-with-express-for