How to use Handlebars ternary helper?

handlebars.js assemble
ryanve picture ryanve · Apr 4, 2015 · Viewed 11.6k times · Source

Following this answer, I wrote a helper like 

module.exports.register = function (Handlebars) {
    Handlebars.registerHelper('ternary', function(test, yes, no) {
        return test ? yes : no;
    });
};

I'm certain that the helper is loaded and being defined but can't figure out the syntax to use it. I tried using it like 

<div>{{ternary(true, 'yes', 'no')}}</div>

but that gives an assemble build error

Warning: Parse error on line 10:
...<div>{{ternary(true, 'yes',
----------^
Expecting 'ID', 'DATA', got 'INVALID' Use --force to continue.

What is the proper syntax to use a helper like that?

Answer

doowb picture doowb · Apr 5, 2015

Handlebars helpers: http://handlebarsjs.com/#helpers don't follow the JavaScript syntax in the templates. You can use them like this:

<div>{{ternary true "yes" "no"}}</div>

Related questions

Import external file content into handlebar

I hope someone can give me a hint. I would like to import content from one file into my handlebar file. Is it possible? In my case, it is an css/scss file (e.g. reset.css) which stylings I …

Read More
What does `{{{variable}}}` mean in handlebars?

What does triple curly braces mean in handlebars template syntax? For example {{{variable}}} I cannot find any documentation. Thanks

Read More
Logical operator in a handlebars.js {{#if}} conditional

Is there a way in handlebars JS to incorporate logical operators into the standard handlebars.js conditional operator? Something like this: {{#if section1 || section2}} .. content {{/if}} I know I could write my own helper, but first I'd like to make …

Read More