main-service/app/controller/home.js

'use strict';
const _ = require('lodash');
const Controller = require('egg').Controller;

class HomeController extends Controller {
  async index() {
    const { ctx } = this;
    ctx.body = 'hi, egg';
  }

  async utilMethod() {
    const res = await this.ctx.model.RoadShow.find();
    for (const i of res) {
      const { picture, filepath } = i;
      if (_.isArray(picture) && picture.length > 0) {
        const arr = [];
        for (let i = 0; i < picture.length; i++) {
          if (_.isString(picture[i])) arr.push({ name: `img${i + 1}`, url: picture[i] });
        }
        i.picture = arr;
      }
      if (_.isArray(filepath) && filepath.length > 0) {
        const arr = [];
        for (let i = 0; i < filepath.length; i++) {
          if (_.isString(filepath[i])) arr.push({ name: `file${i + 1}`, url: filepath[i] });
        }
        i.filepath = arr;
      }
      await i.save();
    }
    this.ctx.ok();
  }
}

module.exports = HomeController;