I'm returning a Mongo collection (using Mongoose) with my node application and am trying to loop through it when its returned to augment a new value to each collection item.
I'm using underscore's each, but for some reason it's not appending what I'm adding to the list. What am I doing wrong?
My code:
Submission.find({}).sort('date', -1).execFind(function (err, submissions) {
_.each(submissions, function (submission, key) {
submissions[key]['newValue'] = 'test';
});
});
But it's not adding in newValue : 'test'.
When I console.log it, I get this:
[{
user_id: 1234,
title: 'testing tyhe slug generation',
description: '',
topic: 'movies',
source: 'http://www.apple.com',
ip: '127.0.0.1',
approved: false,
slug: 'testing-tyhe slug generation',
_id: 5133a60e16661e41db000001,
created: Sun Mar 03 2013 11:35:42 GMT-0800 (PST),
thumbnail: '9146edb190a960c1cc3b0eda7d9f719d'
}, {
user_id: 1234,
title: 'New submission test slug',
description: '',
topic: 'food-drink',
source: 'http://www.apple.com',
ip: '127.0.0.1',
approved: false,
slug: 'new-submission-test-slug',
_id: 5133a6c8adcde860db000001,
created: Sun Mar 03 2013 11:38:48 GMT-0800 (PST),
thumbnail: 'd80003cf9c81a4982fbb81c99abb52dc'
}]
Is this an async issue?
@bob_cobb, Mongoose return the result as a collection of "documents". I mean an array of javascript objects not a JSON. So any careless operation done in these documents also affect database content.
Here As per my understanding, you want to add dynamic or added attribute in documents. So do as follows,
Submission.find({}).sort('date', -1).execFind(function (err, submissions) {
_.each(submissions, function (submission, key) {
//Here you are converting javascript object into JSON.
//That is remove all the functions associated with "submission" object.
submissions[key] = submissions[key].toJSON();
submissions[key]['newValue'] = 'test';
//Note: Here submission.save() won't work.
});
});