Meteor.js – $or mongodb query based on Session variables

Question

I'm building a page on a meteor site that lists the documents of a collection. The collection is stored in a variable called Tools and has a field named "categories". At the top of this page, I want to have buttons that correspond to the categories; when the button is active, the documents of that category show up. When a button is not active, the documents of that category do not show up.

The thing that's throwing me is that I want to set it up so that you can select multiple categories at once.

To hard code the mongodb query to return multiple category would be something like:

Tools.find(
  { $or: 
    [
      { category: 'tech' },
      { category: 'creative' } 
    ] 
  }
);

But I can't figure out how to write this query such that it updates according to Session variables.

As for the Session variables themselves, would it be better to have a boolean variable for each category? As in...

Session.set('tech', true);
Session.set('creative', false);
//etc...

Or would it be better to store them in an array? As in...

Session.set('categories', ['tech', 'creative']);

Thanks in advance!

David Weldon · Accepted Answer · 2015-12-10 18:13:43Z

2

A list of categories seems like it would be much easier to manage:

Session.set('categories', ['tech', 'creative']);

Then you can do this:

Tools.find({category: {$in: Session.get('categories')}});

answered Dec 10, 2015 at 18:13

David Weldon

64.4k11 gold badges152 silver badges146 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Grant Over a year ago

Killed it! Thank you. Didn't know about the $in operator.

Collectives™ on Stack Overflow

Meteor.js – $or mongodb query based on Session variables

1 Answer 1

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related