如何将用户数据从一个集合获取到另一个集合中

Question

我有一个帖子集合表，其中包含指向用户集合的链接。我需要帮助来获取由用户创建的帖子数组。我的意思是包含帖子和创建该帖子的用户的对象数组。 它应该返回 [{post1,user who created post1},{post2,user who created post2},{post3,user who created post3}] 后期模特

const mongoose = require('mongoose');
const Schema = mongoose.Schema;
const PostSchema = new Schema({
    user: {
        type: Schema.Types.ObjectId,
        ref: 'users'
    },
    category: {
        type: String,
        required: true
    },
    description: {
        type: String,
        required: true
    },
    title: {
        type: String,
        required: true
    },
    image: {
        type: String
    },
    date: {
        type: Date,
        default: Date.now
    },
    avatar: {
        type: String
    },
    likes: [
        {
            user: {
                type: Schema.Types.ObjectId,
                ref: 'users'
            }
        }
    ],
    comments: [
        {
            user: {
                type: Schema.Types.ObjectId,
                ref: 'users'
            },
            text: {
                type: String,
                required: true
            },
            name: {
                type: String
            },
            avatar: {
                type: String
            },
            date: {
                type: String,
                default: Date.now
            }
        }
    ],
    date: {
        type: String,
        default: Date.now
    }
});

module.exports = Post = mongoose.model('post', PostSchema);

发布路线

router.get('/posts', auth, async (req, res) => {
    try {
        const post = await Post.find().sort({ date: -1 });

        console.log('post', post);

        res.json(post);
    } catch (err) {
        console.error(err.message);
        res.status(500).send('Server Error');
    

} });