Calculation/app/service/advance_file.js

'use strict';
/**
 * 附件表 数据模型
 * @author LanJianRong
 * @date 2020/8/17
 * @version
 */

module.exports = app => {
    class AdvanceFile extends app.BaseService {
        /**
         * 构造函数
         * @param {Object} ctx - egg全局变量
         * @return {void}
         */
        constructor(ctx) {
            super(ctx);
            this.tableName = 'advance_file';
        }

        /**
         * 获取文件
         * @param {*} payload 载荷|查询条件
         */
        async getAdvanceFiles(payload) {
            const { ctx } = this;
            const result = await this.db.select(this.tableName, { where: payload });
            const list = result.map(item => {
                if (!ctx.helper.canPreview(item.fileext)) {
                    item.filepath = `tender/${ctx.tender.id}/advance/${item.vid}/file/${item.id}/download`;
                }
                return item;
            });
            return list;
        }
        /**
         * 存储上传的文件信息至数据库
         * @param {Array} payload 载荷
         * @return {Promise<void>} 数据库插入执行实例
         */
        async saveFileMsgToDb(payload) {
            return await this.db.insert(this.tableName, payload);
        }

        /**
         * 删除附件
         * @param {Number} id - 附件id
         * @return {void}
         */
        async delete(id) {
            return await this.deleteById(id);
        }
    }
    return AdvanceFile;
};