Select a random json object

help
1

Hello!

stuff = (
	{
		'whatever': 'good day'
	},
	{
		'whatever': 'welcome'
	}
)

Template.hello.helpers({
      stuffs: function () {
      return stuff(random a 'whatever' here please)
   }
});

How do i return a random json object?

2

First if you want stuff to be an array you have to use brackets [] instead of parentheses (). At the most basic level what you’re really asking is how to return a random array index.

You could do:

stuff[ Math.floor(Math.random() * stuff.length) ]

If you want to return a specific property of the object at the array index:

stuff[ Math.floor(Math.random() * stuff.length) ]['property']

As said above, all this does is return a random index from the array. It could be a string, an object – anything you can put in an array. Also that’s just an object literal; I believe JSON uses double quote marks.

1 Like
3

Awesome, works like a baus. I Greatly appreciate your help.
Have a great evening.

4

Hmm. How would i solve the same problem but while im grabbing from a mongodb instead?

5

Exactly the same way. Grab your documents from your db and pick a random index in the array in the same way.

6

Or you can use the meteor random package:

meteor add random

And use

Random.choice(stuff);
7

You can use the sample function from the underscore library, that comes with meteor.

var stuff = [{'whatever': "Hello!"}, {'whatever': "World!"}];
var sample = _.sample(stuff).whatever;
console.log(sample); // "Hello" or "World!"
8

I cant get it to work ://

In my view i just got {{quotes}} ( tried {{quotes.quote}} also )

EDIT: i just noticed that “.whatever” is completely wrong. But it doesnt work with .mkey or .quotes / .quote

im basically completely clueless

9

It’d be nice if you post the error you are getting. Anyway, you are passing a cursor to the sample() function. Use .fetch() and it should work.

10

atm im getting .whatever / .quotes / (the thing i put after sample(stuff)…) is not defined

Where should i put .fetch()?

11

Call .fetch() on the cursor returned by .find(). Then, assuming it exists, you can access the “whatever” property of each array index in the array returned by fetch