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uniibu/koa-nunjucks-async: A Nunjucks Renderer for KoaJs v2+ that uses native async/await of Nodejs

A Nunjucks Renderer Middleware for KoaJs v2+ that uses native async/await of Nodejs

A Koa Middleware that allows you to render nunjucks templates.

Why Build this if you can use other repositories that also supports Koa@2 ?

• Easy to use, Faster since no other dependencies are involved.
• Uses native Async/Await of Nodejs, No other dependencies other than Nunjucks.
• Uses native util.promisify of Nodejs.
• Does not use koa-convert middleware.
• Directly uses nunjucks which means all Nunjucks 'options' are available.

• ctx.state are also exposed automatically to all templates. However, ctx.state gets overwritten (just for that instance) in case the same name is passed via context.
• This middlware also exposes nunjucks.renderString which can be called using ctx.renderString('<p>{msg}</p>',{msg:'hello'}) it is the same as render, but renders a raw string instead of loading a template.
• Async filters are accepted and allowed starting version ^1.1.0

npm install --save koa-nunjucks-async

const Koa = require('koa');
const nunjucks = require('koa-nunjucks-async');
const app = new Koa();

const nunjucksOptions = {
    opts: {
        noCache: false,
        throwOnUndefined: false
    },
    filters: {
        json: x => JSON.stringify(x, null, 2),
        ucfirst: e => typeof e === 'string' && e.toLowerCase() && e[0].toUpperCase() + e.slice(1);
    },
    globals: { title: 'My Page' },
    ext: '.html'
};
// Load other middlewares...
// Load nunjucks last before routes
app.use(nunjucks('views', nunjucksOptions);

// Load your routes...

Note: The nunjucksOptions.opts object is passed directly to nunjucks module.

let settings = {
    opts: {
        autoescape: true,
        throwOnUndefined: false,
        trimBlocks: false,
        lstripBlocks: false,
        watch: false,
        noCache: false
    },
    filters: {},
    globals: {},
    extensions: {},
    ext: '.html'
};

Check https://mozilla.github.io/nunjucks/api.html#configure for each of the opts description.

await ctx.render('name_of_template_file',context);

  const Koa = require('koa');
  const app = new Koa();

  app.use(async ctx => {
    await ctx.render('template', {
         message: 'Hello World!'
       });
  });

const Router = require('koa-router');
const router = new Router();

router.get('/', async ctx => {
   await ctx.render('template', {
         message: 'Hello World!'
       });
});

  const Koa = require('koa');
  const app = new Koa();

  app.use(async (ctx,next) => {
      ctx.state.title = "My Page";
      await next();
  })

  // the variable 'title' is now exposed to all templates unless overwritten by context.
  // So using {{ title }} will render "My Page".
  app.use(async ctx => {
    await ctx.render('template', {
         message: 'Hello World!'
       });
  });

This project is licensed under the Apache license. See the LICENSE file for more info.

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