Adding properties to nested objects - Javascript

Question

I'm trying to create an object that has multiple objects. I then need to add properties to those nested objects.

Here is my code:

var collection = {};
_.each(context, function(item, key) {
    collection[key] = {
      'color_id'   : item.Options[0].id || null,
      'color_Name' : item.Options[0].Name || null
    };

  if (item.aOptions[1]) { "you have another set of items!"};

    collection[key] += {
      'price'       : item.Price || null,
      'inStock'     : item.InStock || null,
      'iPk'         : item.id || null
    };        
  }
});

FYI, _.each() is a Lodash function.

When I run this, it basically creates two objects nested inside of each key's object. Example when console.log()ed:

{ num_401510_640070: '[object Object][object Object]' }

My goal is to be able to check for the if condition, add it to the object, and then add the remaining portion and have it be a single object. Not multiple objects inside of one object.

Blue Skies · Accepted Answer · 2013-10-28 17:21:32Z

5

lodash has a _.merge method.

_.merge(object, [source], [callback], [thisArg])

So in your case:

if (item.aOptions[1]) {
    _.merge(collection[key], {
        'price'       : item.Price || null,
        'inStock'     : item.InStock || null,
        'iPk'         : item.id || null
    });        
}

answered Oct 28, 2013 at 17:21

Blue Skies

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3 Comments

JDillon522 Over a year ago

Awesome. I was unaware of that method. Works perfectly

Blue Skies Over a year ago

@JDillon522: To be honest, I've never used lodash. I just took a quick look through their documentation. Just sayin... ;-)

JDillon522 Over a year ago

Ha. I just got Bazinga'd

aug · Accepted Answer · 2013-10-28 17:22:43Z

1

You can try this.

  if (item.aOptions[1]) { "you have another set of items!"};

    collection[key].price = item.Price || null;
    collection[key].InStock = item.InStock || null;
    collection[key].iPk = item.id || null;  

  }

answered Oct 28, 2013 at 17:22

aug

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2 Comments

aug Over a year ago

Blue Skies answer seems more appropriate though if you are already using the lodash library.

JDillon522 Over a year ago

Agreed. Without lodash this would work I believe (I didnt try it)

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