Asset helper complains about wrong spec

[Mika571]

See the following playground here, I have a helper for picking what asset to draw, however jsreport complains about the param spec being wrong.

The first two each statements demonstrate that the helper returns a string as expected and that the assets can be found:

{{#each samples as |sample i|}}
{{getLevelImage sample}}
{{/each}}
{{#each samples as |sample i|}}
<img src="{#asset slyk-alert.svg @encoding=dataURI}" style="height:1.75%; margin: 0 auto;">
{{/each}}

Where the helper getLevelImage is:

handlebars.registerHelper("getLevelImage", function(sample)
{
  switch (sample.Results.Level) {
    case 1:
      return 'slyk-normal.svg @encoding=dataURI';
    case 2:
      return 'slyk-warning.svg @encoding=dataURI';
    case 3:
      return 'slyk-alert.svg @encoding=dataURI';
    case 4:
      return 'slyk-critical.svg @encoding=dataURI';
    default:
      return 'slyk-normal.svg @encoding=dataURI';
  }
});

This results in:

But the final line throws the error.

[jan_blaha]

Handlebars does escaping if you call helper using {{foo}}. This breaks the asset specification. Try it with {#asset {{{getLevelImage sample}}}}.

FYI Are you aware that helpers in jsreport can be specified using global function? Calling registerHelper is not required.

function getLevelImage(sample) {
  return 'foo'
}

[Mika571]

Of course, thanks Jan!

[Mika571]

I did have another question, I have created the templates I needed using a jsreport-cli project, but I wanted to use jsreport in my existing node.js application. Do I need jsreport or to extend jsreport-core with the recipes and engine i want to use?
edit: Would you prefer I create a new post?

[bjrmatos]

hi! you can use jsreport in your existing node.js application normally, this link would be helpful to you: https://jsreport.net/learn/adapting-jsreport , it contains section of how to integrate with express server in your app too.