CODEWITHSUNDEEP
javascriptnode.jsmongodbexpressmongoose
user5809117
user5809117

Reputation:

How do I obtain the count of populated children in a Mongoose model?

I'm new to MongoDB and Mongoose.

Is there any simple way to get count of answers for each topic after population method?

var query = Topic.find({});
query.select("title answersRef");
query.populate({path:"answersRef", select:"_id"}); //here I want count of answers 

query.exec(function(topicError, topicResult){
    res.render('topic', { topic: topicResult });
});

On a webpage, I would like to show every topic's title that I find from database with the number of comments on each topic.

Upvotes: 1

Views: 2123

Answers (1)

gnerkus
gnerkus

Reputation: 12019

The answersRef property of the topicResult contains all the answers so you can just obtain the length:

query.exec(function(topicError, topicResult){
    var answerCount = topicResult.answerRef.length;
    res.render('topic', { topic: topicResult });
});

Upvotes: 1

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