如何推送到 [] 类型的猫鼬模式属性

Question

I'm using mongoose in my backend and was wondering if it was correct to set a schema property of type array like this?:

comments: {
        type: [],
        required: false,
    }

Then push to a doc with the same property like this?:

thread.comments.push({
                    commenter: req.user.username,
                    content: comment,
                });
                thread.save();

Answer 1

As comments are children of your thread schema I'd suggest using SubDocuments :

const commentSchema = new Schema({ 
   commenter: 'string',
   content: 'string' 
});

const threadSchema = new Schema({
  comments: [commentSchema],
  //...
});

Adding a comment:

thread.comments.push({
   commentor: req.user.username,
   content: comment //the text of the comment
});
thread.save();