Handlebars - Concat string parameters when calling

Question

I would like to know if it is possible to concat a variable with another string when loading a partial using Handlebars.

{{partial logos this ns=../ns nsr=../nsr id=id+"something"}}

I'd like to concat id+"something" and storing it into id, which would be sent to the template.

I'm using a custom helper to load partials (partial) which merge this with the options.hash provided by handlebars.

Answer 1

You could do a slightly more reusable solution like so:

module.exports = function (json) {
  var concat = '';
  var flipArray = [];
  for(var key in json.hash){
    flipArray.push(json.hash[key]);
  }

  for(var i = (flipArray.length - 1); i >= 0; i--){
    concat += flipArray[i];
  }

  return concat;
};

Then call it like so:

{{> icon name=(concat a="file-" b="pdf")}} // passes file-pdf to the partial under the hash value name

or

{{concat a="icon-" b="pdf" c="-Asdfasd" d="zxcvzxcvzxcvxz"}} // outputs icon-pdf-Asdfasdzxcvzxcvzxcvxz

The reason for the looping backwards in the helper is because handlebars currently lists it's hash parameters from last to first from the order you declare them.