service-question/app/service/questionnaire.js

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

// 问卷
class QuestionnaireService extends CrudService {
  constructor(ctx) {
    super(ctx, 'questionnaire');
    this.model = this.ctx.model.Questionnaire;
    this.question = this.ctx.service.question;
  }
  async fetch({ id }) {
    const data = await this.model.findById(id, '+questions');
    if (!data) throw new BusinessError(ErrorCode.DATA_NOT_EXIST, '未找到指定问卷!');
    const obj = data.questions;
    if (obj.every(e => _.isObject(e))) return data;
    // 如果到这里了,说明不全是现编的题,有从库里选的,是string类型的id,过滤出这部分
    const ids = obj.filter(f => _.isString(f));
    if (ids.length > 0) {
      const partQuests = await this.question.getQuestions(ids);
      // 查出了后将对应位置的id换成题目
      for (const i of partQuests) {
        const index = obj.findIndex(f => _.isString(f) && ObjectId(i._id).equals(f));
        obj[index] = i;
      }
      data.questions = obj;
    }
    return data;
  }
}

module.exports = QuestionnaireService;