Question

140

Having problems with passing array to jade template in node.js

rated 0 times [ 145] [ 5] / answers: 1 / hits: 16033 / 11 Years ago, fri, november 29, 2013, 12:00:00

I am trying to pass array of news to display on the screen but I somehow am getting empty array in the result in the browser

routes/rss.js

...

var news = [];

...

          var this_news = { 

            'title': item.title,

            'description': item.description

          }   

          news.push(this_news);

...

  res.render('rss', { 

    title: 'Node.js based RSS reader',

    newsi: JSON.stringify(news)

  });

views/rss.jade

extends layout



block content

  h1= title

  p Welcome to #{title}

  p Sure why not 

  script(type='text/javascript').

    var inews = !{newsi};

EDIT

Ok so I have come to the conclusion that the problem lies with my 'non-callback logic'

that's my code :

var FeedParser = require(__dirname + '/../node_modules/feedparser')

  , request = require(__dirname + '/../node_modules/request');



exports.news = function(req, res){



  var news = []; 

    request('http://feeds.feedburner.com/niebezpiecznik/')

    .pipe(new FeedParser())

      .on('error', function(error) {

        //...

      })  

      .on('meta', function (meta) {

        console.log('===== %s =====', meta.title);

        console.log('**** %s ****', meta.description);

        console.log();

      })  

      .on('readable', function() {

        var stream = this, item;

        while (item = stream.read()) {



          var this_news = { 

            'title': item.title,

            'description': item.description

          }   

          news.push(this_news);



        }   

        res.render('rss', { 

          title: 'Node.js based RSS reader',

          newsi: JSON.stringify(news)

        }); 

    }); 



};

It almost works but there it gets me unhandled exception. How should I handle this ?

Answers

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ishmaelw

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3 Years ago

answered 11 Years ago tristani · Accepted Answer

You can just pass it as an array, you don't need to stringify it when you are rendering. Then on your jade side you can just use for & each if you are only wanting to loop through.

To get it to pass as an object to a script though you use an exclamation mark with single quotes then parse your object so you can use it. If you are going to pass it as an object to a script however and not use Jade's built-in iterating then you will need to stringify on your rss.js.

routes/rss.js

...

var news = [];

...

          var this_news = { 

            'title': item.title,

            'description': item.description

          }   

          news.push(this_news);

...

  res.render('rss', { 

    title: 'Node.js based RSS reader',

    newsi: JSON.stringify(news)

  });

views/rss.jade

extends layout



block content

  h1= title

  p Welcome to #{title}

  p Sure why not

  script(type='text/javascript').

    // Pass as regular array here

    var inews = JSON.parse('!{newsi}');

    console.log(inews);