Node + Express Mongoose Sub Collection Document Insert

express, mongodb, mongoose, node.js

Solution

You can use the following code snippet:

var comment = {
    author: req.body.post.author , 
    body: req.body.post.body, 
    date: new Date()
};

Post.findOneAndUpdate(
  { title: req.body.post.title },
  { $push: { comments: comment }},
  { safe: true, upsert: true },
  function(err, blogModels) {
    // Handle err
  });

This snippet simply try to find a `Blog` post, if it success then `$push` a new comment, otherwise, adds a blog post with a initial comment. So, your final code should look like this :

app.post('/addpost', function(req,res) {
    var comment = {
        author: req.body.post.author , 
        body: req.body.post.body, 
        date: new Date()
    };

    Post.findOneAndUpdate(
      { title: req.body.post.title },
      { $push: { comments: comment }},
      { safe: true, upsert: true },
      function(err, blogModels) {
        // Handle err
        });
});

Problem

I have a Node + Express project running, I am building a basic blogging system with the following Schema and Models ``` var Post = mongoose.Schema({ title: String, body: String, author: String, dateCreated: {type: Date, default: Date.now }, comments: [{author: String, body: String, date: Date}] }); var Post = db.model('Post', Post); ``` I accept a post request via the following code and update the Title, Body and Author from it ``` app.post('/addpost', function(req,res){ console.log(req.body.post); var post = new Post(req.body.post); post.save(function(err){ if(!err){ res.redirect('/'); }else{ res.redirect('/'); } }) }) ``` The question I have is, how do I add Comments to the schema using the coda I have already developed? `req.body.post` outputs ``` { title: 'Hello World', body: 'This is a body', author: 'Bioshox' } ``` Which is obviously acceptable for Mongoose, but in order to add comments how would I go about this? Thanks!!

Original source