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@donnut
Created September 25, 2012 13:30
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Example of limiting the number of populated documents with where() and elemMatch
var requirejs = require('requirejs')
, mongoose = require('mongoose');
requirejs.config({
baseUrl: __dirname
, nodeRequire: require
});
requirejs([], function() {
mongoose.connect('localhost/mydb');
var fixtures = null;
describe('Returning Comments', function() {
before(function(done) {
fixtures = require('pow-mongodb-fixtures').connect('mydb');
fixtures.clearAllAndLoad(__dirname + '/fixtures', function() {
done();
});
});
describe('posts and comments', function() {
it('get identified comments of post only', function(done) {
var Schema = mongoose.Schema;
var CommentSchema = new Schema({ content: [String] });
var PostSchema = new Schema({ comments: [{ type: Schema.Types.ObjectId, ref: 'Comment' }] });
var Comments = mongoose.model('Comment', CommentSchema);
var Posts = mongoose.model('Post', PostSchema);
var comment1 = new Comments({ content: 'eerste regel' });
comment1.save(function(err) {
var comment2 = new Comments({ content: 'tweede regel' });
comment2.save(function(err) {
var post = new Posts();
var commentIds = [comment1._id, comment2._id];
console.log('ids: '+commentIds)
post.comments.push(comment1);
post.comments.push(comment2);
post.save(function(err) {
var postId = post._id;
Posts.findById(postId)
.populate('comments')
.where('comments', { $elemMatch: {$in: commentIds }})
.exec(function(err, doc) {
console.log(doc.comments);
done();
});
});
})
});
});
after(function() {
fixtures.clear(function() {});
});
});
});
});
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