info_admin/app/service/operationManualService.js

'use strict';

const fs = require('fs');
// node.js 路径操作对象
const path = require('path');
const Service = require('../service/baseService');

class OperationManualService extends Service {
  tag() {
    return this.ctx.model.OperationManualModel;
  }

  // 上传前先删除原有文件
  async upload(query) {
    const { service } = this;
    const { id } = query;
    if (id) {
      const oneFile = await this.one(id);
      if (oneFile.filePath && oneFile.filePath !== '') {
        // 同步删除  unlinkSync  （异步 : unlink）
        const dicPath = path.join(this.app.config.defaultUploadPath, oneFile.fileName);
        if (fs.existsSync(dicPath)) {
          fs.unlinkSync(dicPath);
        }
      }
      const url = await service.imageHandleService.upload(oneFile.fileName);
      if (url) {
        const data = {};
        data.filePath = url;
        data.time = Date.now();
        return await this.update(id, data);
      }
    }
    return null;
  }
}

module.exports = OperationManualService;