CODEWITHSUNDEEP
javascripthtmlarraysmeteor
Sujoy De
Sujoy De

Reputation: 229

I am unable to return an array of a document using an each function in meteor

My html code:

<template name="homeItem">
        <li class= "{{selectedClass}}">{{{content}}}</li>
        <li class= "tagsBody">{{#each tags}}<a href="/tagsTemp/{{this}}">{{tags}}</a> {{/each}}</li>
</template>

The subscribing to "contents" is being done at the route controller level.
Now the "tags" is an array which is a part of "content" which is a document in a collection named "contentsList".
I have used a homeitem helper function which goes such as this: JS client code

Template.homeItem.helpers({
    'tags':function(){
      return contentsList.findOne({_id: this._id}).tags
    }
});

The errors that are returned are:
1) Exception in template helper: TypeError: Cannot read property 'tags' of undefined.
2)Uncaught Error: {{#each}} currently only accepts arrays, cursors or falsey values.
3)Exception from Tracker recompute function:TypeError: Cannot read property '0' of null
How can I solve this problem? I am new to programming. So, please forgive me for diverting from any programming conventions. Any help would be hugely appreciated.

Upvotes: 2

Views: 74

Answers (1)

Brett McLain
Brett McLain

Reputation: 2010

contentList.findOne({_id: this._id}) is returning null, so when you try to do null.tags it shows up as undefined.

Make sure that a subscription exists for contentsList and that you can search it. Test this by running contentList.find().fetch() to see what comes back. If nothing comes back, your subscription doesn't exist.

Upvotes: 0

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