Meteor & Mongo: addToSet inserting -

i have documents in base:

//example docs {"_id": "qwerty12345", "name": "bob", "cards":["cardid1", "cardid2", "cardid3"]} 

i'm using inserting data:

template.insert.events({     'click add': function(){         if(confirm("add card?"));         mycollection.update({_id: session.get('fooid')}, { $addtoset: { cards: this._id}})      } }); 

then i'm using helper template:

template.index.helpers({   cards: function(){         query = mycollection.findone({_id: session.get('fooid')});         return query.cards;     } }); 

and in template:

<img src="{{img}}" class="add"> {{#each cards}} {{this}}<br> {{/each}} 

this works perfecty, have trouble:

as see, every image have id , url({{image}}), i'm need add image url 'mycollection' every card(on click).

how make it?

and second problem: how allow mongo insert duplicates "cards" array?

do mean every card has id , image field? guess so.

you can add nested object array fields.

mycollection.update({_id: session.get('fooid')}, { $addtoset: { cards: {id: this._id, image: this.image}}}).

in template: {{#each cards}} {{this.id}}: {{this.image}}<br> {{/each}}

for second problem: can use $push instead of $addtoset