Nest: Documentation Issue: How does one register helpers with handlebars?

[kamilmysliwiec]

Could you share an example of the sample code to show us what actually you're trying to achieve?

[patryk-wlaz]

I think he was trying to add helpers to handlebars engine (as he wrote). In docs there is an example of using 'hbs' engine - leveraging list of engines compliant with express out of the box. So this question is not really about nestJS I think.

That being said, I myself used to have some troubles adding helpers to hbs engine. Finally I decided to use express handlebars. Using this package you just need to add object with helpers as part of config passed to function creating hbs instance, that is going to be used as engine in your app. I'll leave example, maybe somebody would use it.

import { NestFactory } from '@nestjs/core';
import { join } from 'path';
import * as exphbs from 'express-handlebars';

import { AppModule } from './app.module';

async function bootstrap() {
  const app = await NestFactory.create(AppModule);
  app.useStaticAssets(join(__dirname, 'public'));
  app.setBaseViewsDir(join(__dirname, 'views'));

  const helpers = {
    hlp: (echo) => `Echo: ${echo}.`,
  };
  const hbs = exphbs.create({
    defaultLayout: 'main',
    layoutsDir: join(__dirname, 'views', 'layouts'),
    helpers,
  });

  app.engine('handlebars', hbs.engine);
  app.setViewEngine('handlebars');

  await app.listen(process.env.PORT);
}
bootstrap();

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