在Node.js中实现关注列表和粉丝列表的方法示例

// 在user.js文件中定义路由
router.get('/getSubscribe/:userId', userController.getSubscribe);

const lodash = require('lodash');
const Subscribe = require('../models/subscribe');

exports.getSubscribe = async (req, res) => {
  let subscribeList = await Subscribe.find({
    user: req.params.userId
  }).populate('channel');
  
  subscribeList = subscribeList.map(item => {
    return lodash.pick(item.channel, [
      '_id', 'username', 'image', 'subscribeCount', 'cover', 'channelDes'
    ]);
  });
  
  res.status(200).json(subscribeList);
};

// 在user.js文件中添加路由
router.get('/getChannel', verifyToken(), userController.getChannel);

exports.getChannel = async (req, res) => {
  let channelList = await Subscribe.find({
    channel: req.user.userinfo._id
  }).populate('user');
  
  channelList = channelList.map(item => {
    return lodash.pick(item.user, [
      '_id', 'username', 'image', 'subscribeCount', 'cover', 'channelDes'
    ]);
  });
  
  res.status(200).json(channelList);
};