server-v2/app/service/business/lesson.js

'use strict';
const { CrudService } = require('naf-framework-mongoose-free/lib/service');
const { BusinessError, ErrorCode } = require('naf-core').Error;
const _ = require('lodash');
const assert = require('assert');

//
class LessonService extends CrudService {
  constructor(ctx) {
    super(ctx, 'lesson');
    this.model = this.ctx.model.Business.Lesson;
  }

  /**
   * 处理下课的课程进行结算
   * @param {Object} filter 修改条件
   * @param {Object} body 修改内容
   * @param {Object} data 修改后的结果
   * @return {Object} 返回整理后的内容
   */
  async afterUpdate(filter, body, data) {
    const { _id: lesson_id, type, status } = data;
    if (status !== '4') return data;
    // 公开课,每个教师都带着自己的金额. 按 人头数 * 单价 算钱
    // 私教课, 按学生实际缴费

    return data;
  }
}

module.exports = LessonService;