[英]How mongoose populate more than 2 level deep?
我將評論模型定義為:
CommentSchema = new mongoose.Schema ({
name: String,
email: String,
website: String,
content: String,
createDate: Date,
updateDate: Date,
targetBlog: {type: mongoose.Schema.Types.ObjectId, ref: 'Blog'},
childrenComment: [{type: mongoose.Schema.Types.ObjectId, ref: 'Comment'}]
});
當我使用 populate 時:
Comment.find({targetBlog: blog._id}).populate({path: 'childrenComment'}).exec(function(err, comments) {
console.log(comments);
res.render('blog', { blog: blog, comments: comments});
});
我發現貓鼬只填充一層深。 那么我該怎么做才能讓它填充多個級別,因為級別可以是 2 或 3 級或更多。
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