問題:
在nodejs + express4.x + sqlite3項目中,使用sequelize,在路由文件中定義model,可以查詢到數(shù)據(jù)。將model定義提取出來,再查詢時,提示
TypeError: Cannot read property 'hasOwnProperty' of undefined
代碼
(1)sequelizeConfig
var fs = require("fs");
var file = "./public/db/sdpmodelbuild.db";
var exists = fs.existsSync(file);
if(!exists) {
console.log("Creating DB file.");
fs.openSync(file, "w");
}
var Sequelize = require('sequelize');
var sequelizeConn = new Sequelize("database", "username", "password",{
host: 'localhost',
dialect:'sqlite',
pool: {
max: 5,
min: 0,
idle: 10000
},
storage:file
});
//測試數(shù)據(jù)庫鏈接
sequelizeConn.authenticate().then(function() {
console.log("數(shù)據(jù)庫連接成功");
}).catch(function(err) {
//數(shù)據(jù)庫連接失敗時打印輸出
console.error("數(shù)據(jù)庫連接失敗,錯誤:" + err);
throw err;
});
module.exports.sequelizeConn = sequelizeConn;
module.exports.Sequelize = Sequelize;
(2)PlantUnitModel
var sequelizeConfig = require("../config/sequelizeConfig");
var Sequelize = sequelizeConfig.Sequelize;
var sequelizeConn = sequelizeConfig.sequelizeConn;
var PlantUnitBean = sequelizeConn.define("PlantUnitBean",{
ID: {type: Sequelize.STRING, allowNull: false, primaryKey: true, unique: true},
PLANTCODE: {type: Sequelize.STRING},
PLANTNAME: {type: Sequelize.STRING},
UNITCODE: {type: Sequelize.STRING},
UNITNAME: {type: Sequelize.STRING},
UNITCN: {type: Sequelize.STRING},
UNITS: {type: Sequelize.STRING},
ISDELETE: {type: Sequelize.INTEGER},
BLOCID: {type: Sequelize.STRING},
},{
tableName: 'PAR_UNIT_TB',
// 自定義表名
freezeTableName: true,
// 是否需要增加createdAt、updatedAt、deletedAt字段
timestamps: true,
// 不需要createdAt字段
createdAt: false,
// 將updatedAt字段改個名
//updatedAt: 'modifiedOn',
updatedAt: false,
// 將deletedAt字段改名
// 同時需要設(shè)置paranoid為true(此種模式下,刪除數(shù)據(jù)時不會進(jìn)行物理刪除,而是設(shè)置deletedAt為當(dāng)前時間
//deletedAt: 'deletedOn',
deletedAt: false,
paranoid: true
});
function getPlantUnitModel() {
console.log("model sequelizeConn==>" + sequelizeConn + ", Sequelize" + Sequelize.STRING);
var PlantUnitModel = sequelizeConn.define("PlantUnitModel",{
ID: {type: Sequelize.STRING, allowNull: false, primaryKey: true, unique: true},
PLANTCODE: {type: Sequelize.STRING},
PLANTNAME: {type: Sequelize.STRING},
UNITCODE: {type: Sequelize.STRING},
UNITNAME: {type: Sequelize.STRING},
UNITCN: {type: Sequelize.STRING},
UNITS: {type: Sequelize.STRING},
ISDELETE: {type: Sequelize.INTEGER},
BLOCID: {type: Sequelize.STRING},
},{
tableName: 'PAR_UNIT_TB',
// 自定義表名
freezeTableName: true,
// 是否需要增加createdAt、updatedAt、deletedAt字段
timestamps: true,
// 不需要createdAt字段
createdAt: false,
// 將updatedAt字段改個名
//updatedAt: 'modifiedOn',
updatedAt: false,
// 將deletedAt字段改名
// 同時需要設(shè)置paranoid為true(此種模式下,刪除數(shù)據(jù)時不會進(jìn)行物理刪除,而是設(shè)置deletedAt為當(dāng)前時間
//deletedAt: 'deletedOn',
deletedAt: false,
paranoid: true
});
console.log("model PlantUnitModel==>" + PlantUnitModel);
return PlantUnitModel;
}
module.exports.PlantUnitBean = PlantUnitBean;
module.exports.getPlantUnitModel = getPlantUnitModel;
(3)plantUnit
var express = require('express');
var router = express.Router();
//引入數(shù)據(jù)庫包
var dbUtil = require("../util/dbUtil.js");
var PlantUnitModel = require("../model/PlantUnitModel");
var test = require("../model/PlantUnitModel").PlantUnitBean;
// start: 下列代碼啟用,不取 model 文件,可以獲取到數(shù)據(jù)
/*
var fs = require("fs");
var file = "./public/db/sdpmodelbuild.db";
var exists = fs.existsSync(file);
if(!exists) {
console.log("Creating DB file.");
fs.openSync(file, "w");
}
var Sequelize = require('sequelize');
var sequelizeConn = new Sequelize("database","username","password",{
host: 'localhost',
dialect:'sqlite',
pool: {
max: 5,
min: 0,
idle: 10000
},
storage:file
});
var PlantUnitBean = sequelizeConn.define("PlantUnitBean",{
ID: {type: Sequelize.STRING, allowNull: false, primaryKey: true, unique: true},
PLANTCODE: {type: Sequelize.STRING},
PLANTNAME: {type: Sequelize.STRING},
UNITCODE: {type: Sequelize.STRING},
UNITNAME: {type: Sequelize.STRING},
UNITCN: {type: Sequelize.STRING},
UNITS: {type: Sequelize.STRING},
ISDELETE: {type: Sequelize.INTEGER},
BLOCID: {type: Sequelize.STRING},
},{
tableName: 'PAR_UNIT_TB',
// 自定義表名
freezeTableName: true,
// 是否需要增加createdAt、updatedAt、deletedAt字段
timestamps: false
});
PlantUnitBean.sync();
*/
// end: 下列代碼啟用,不取 model 文件,可以獲取到數(shù)據(jù)
/**
* 查詢列表頁
*/
router.get('/', function (req, res) {
res.render('params/plantUnit/list');
});
router.get('/json', function (req, res) {
var list = [];
PlantUnitModel.getPlantUnitModel().findAll({
"where": {
"ISDELETE": {$ne: 1}
}
}).then(function(result) {
for (var i = 0; i < result.length; i++) {
list.push(result[i].toJSON());
}
console.log("list:" + list);
if (list) {
res.json({errno:0, title: '', data: list, s_name: ""});
} else {
res.json({errno:0, title: '', data: [], s_name: ""});
}
}).catch((err)=>{
console.log("json err ==>" + err);
});
});
錯誤信息
已查找
https://github.com/caiya/node...
https://stackoverflow.com/que...
北大青鳥APTECH成立于1999年。依托北京大學(xué)優(yōu)質(zhì)雄厚的教育資源和背景,秉承“教育改變生活”的發(fā)展理念,致力于培養(yǎng)中國IT技能型緊缺人才,是大數(shù)據(jù)專業(yè)的國家
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