Node.js Express与Mongoose实现视频评论功能详解

// router/video.js
const router = require('express').Router();
const verifyToken = require('../middlewares/verifyToken');
const videoController = require('../controllers/videoController');

router.post('/comment/:videoId', verifyToken(), videoController.comment);

module.exports = router;

// models/videoCommentModel.js
const mongoose = require('mongoose');
const baseModel = require('./baseModel');

const videoCommentSchema = new mongoose.Schema({
  content: {
    type: String,
    required: true
  },
  video: {
    type: mongoose.ObjectId,
    required: true,
    ref: 'Video'
  },
  user: {
    type: mongoose.ObjectId,
    required: true,
    ref: 'User'
  },
  ...baseModel
});

module.exports = mongoose.model('videoComment', videoCommentSchema);

// models/index.js
const mongoose = require('mongoose');
module.exports = {
  VideoComment: require('./videoCommentModel'),
  // 其他模型...
};

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// models/videoModel.js
const mongoose = require('mongoose');

const videoSchema = new mongoose.Schema({
  commentCount: {
    type: Number,
    default: 0
  },
  // 其他字段...
});

module.exports = mongoose.model('Video', videoSchema);

// controllers/videoController.js
const { Video, VideoComment } = require('../models');

exports.comment = async (req, res) => {
  const { videoId } = req.params;
  const videoInfo = await Video.findById(videoId);
  if (!videoInfo) {
    return res.status(404).json({ err: "视频不存在" });
  }
  const comment = await new VideoComment({
    content: req.body.content,
    video: videoId,
    user: req.user.userinfo._id
  }).save();
  videoInfo.commentCount++;
  await videoInfo.save();
  res.status(200).json(comment);
};