CODEWITHSUNDEEP
javascriptnode.jsmongodbexpressejs
MasterMind
MasterMind

Reputation: 1013

Express/MongoDB/EJS - Can't read object

So I Have some data in my Mongo Database, which I.find() by express and send it to my EJS view. pretty simple. But the problem is when I try to read it using <pre><%=%></pre> i get undefined. Here's the entire code:
The Data Array containing Object in MongoDB:

[{
  _id: 6069820f402d01120cda8cff,
  imageName: 'Dining Plate',
  imagePath: './public/assets/img/6.jpg',
  description: 'Wallpapers',
  __v: 0
}]

Express Code where I get it and send it to EJS:

app.get('/wallpapers/:id', ((req, res) => {
  const urlID = req.params.id;
  Thing.find({}, function (err, result) {
    if (err) {
      console.log(err);
    } else {
      var fres = result.filter(d => d._id == urlID);
      res.render('wallpaper-page',{fres});
    }
  });
})
)

and the EJS:

<pre><%= fres.description%> %> </pre>

And Now the BIG CONFUSION: when I replace fres.description with fres._id, It works perfectly fine. but that's it, it doesn't wanna print any other key values. I've been searching far and wide for almost a day now. But nothing helps. this is annoying me now.

PS: console.log(fres.description) is undefined and console.log(fres._id) works fine.

Why? How do I fix this? please tell me if you need any other code.

Upvotes: 0

Views: 411

Answers (2)

Đăng Khoa Đinh
Đăng Khoa Đinh

Reputation: 5411

Besides the problem with the filter method returns an array, I think you have another problem accessing data from Mongoose response.

This problem is discussed here: Mongoose return data inside _doc object. You can check out my answer with a test code to demonstrate some methods to access data from Mongoose response.

Upvotes: 1

Som Shekhar Mukherjee
Som Shekhar Mukherjee

Reputation: 8158

Array.filter returns an array. So, var fres = result.filter(d => d._id == urlID); the variable fres is an array with an object in it.

And if you need only the object in your EJS template, you need to pass just that. res.render('wallpaper-page',{fres: fres[0]});

Now you can access the description key directly. But I don't understand how fres._id works, it should also be undefined.

Upvotes: 0

Related Questions