service/app/middleware/order-num.js

'use strict';
const _ = require('lodash');
const getOrderNum = async (ctx, data) => {
  const keys = [ 'breakfast', 'lunch', 'dinner' ];
  for (const key of keys) {
    if (_.get(data.arrange, key) && _.isArray(_.get(data.arrange, key))) {
      for (const i of _.get(data.arrange, key)) {
        const res = await ctx.model.Dining.Menu.findById(i._id);
        console.log(res.order);
        if (res) i.order = res.order;
      }
    }
  }
  return data;
};
module.exports = options => {
  return async function orderNum(ctx, next) {
    await next();
    const request = ctx.request;
    const { method } = request;
    if (method === 'GET') {
      let { data } = ctx.body;
      data = JSON.parse(JSON.stringify(data));
      // 将所有的菜谱中的点餐数量都换成原id的数量,做成实时数据
      if (_.isArray(data)) {
        for (let d of data) {
          d = await getOrderNum(ctx, d);
        }
      } else {
        data = await getOrderNum(ctx, data);
      }
      ctx.body.data = data;
    }
  };
};