pdfCreatePagesGroup is not async-ready

msageryd

I need to call i18Next to translate a parameter for my pdfCreatePagesGroup. As per suggestion from Jan I'm now instantiating i18next in a promise. It works superbly everywhere but not in pdfPagesGroup.

pdfPagesGroup does not cope with async functions. In this case I could work around it by creating a special synchronous version of t(), since I know that i18Next has already been instantiated.

Please make pdfPagesGroup handle async functions as well. It's a great concept to be able to use async helper functions.

// title will be empty
// title2 will get the correct translation
{{{pdfCreatePagesGroup title=(t 'encasementList.title') title2=(tSync 'encasementList.title')}}}

const i18next = require('i18next').createInstance()

const initI18next = (i18nMeta) => i18next.init({
  //initialisation params..
})   

function tSync(key) {
  return i18next.t(key);
}

async function t(key, options) {
  await initI18next(options.data.root.i18n);
  return i18next.t(key, options.hash);
}

msageryd

It seems to be a problem with nested function calls as well.

I have two helpers:

i18nLookup which takes a lookup section, a lookup key, and a field to get the translated value from
enclose which takes a value, a prefix and a suffix. If the value is blank, no prefix and suffix will be applied

I want to lookup a language title by searching for a language code.

Input: 'sv'
Output: '(Swedish)'

If the language title is not found I will get an empty string, i.e. not '()'

{{enclose (i18nLookup 'languages' languageCode 'title') '(' ')'}}

This does not work with async functions. Instead of the language title, I get '{#AsyncHelperResult ABCDEF}`.

jan_blaha

Yes, our apologies.
The helper's async implementation currently doesn't work well with nested helper calls or with async helper parameters.
I submitted a task to our backlog to improve this.
https://github.com/jsreport/jsreport/issues/769