server-front/app/middleware/coupons_apply.js

'use strict';
const _ = require('lodash');

const idToData = async (ctx, id) => {
  let res = await ctx.service.cysci.coupons.fetch({ id });
  if (res) {
    res = JSON.parse(JSON.stringify(res));
    const { user_id } = res;
    if (user_id) {
      const user = await ctx.model.User.Admin.findById(user_id);
      if (user) res.user = user;
    }
  }
  return res;
};

module.exports = options => {
  return async function couponsApply(ctx, next) {
    const request = ctx.request;
    await next();
    const { method } = request;
    if (method === 'GET') {
      // 处理get的时coupons_id换成对应的数据
      let { data } = ctx.body;
      data = JSON.parse(JSON.stringify(data));
      if (_.isArray(data)) {
        // 数组,多个,循环查
        for (const i of data) {
          const { coupons_id } = i;
          const res = await idToData(ctx, coupons_id);
          if (res)i.coupons = res;
        }
      } else if (_.isObject(data)) {
        // 一个,找完就完事
        const { coupons_id } = data;
        const res = await idToData(ctx, coupons_id);
        if (res) data.coupons = res;
      }
      ctx.body.data = data;
    }
  };
};