我有3个型号，Product，Age和ProductAges
product.js
'use strict';
module.exports = function(sequelize, DataTypes){
var Product = sequelize.define('Product', {
sku: DataTypes.STRING,
name: DataTypes.STRING,
value: DataTypes.STRING,
body: DataTypes.TEXT
}, {
associate: function(models) {
Product.belongsToMany(models.Age, {through: models.ProductAges});
}
});
return Product;
}
age.js
'use strict';
module.exports = function(sequelize, DataTypes) {
var Age = sequelize.define('Age', {
name: DataTypes.STRING,
value: DataTypes.STRING
},{
associate: function(models) {
Age.belongsToMany(models.Product, {through: models.ProductAges})
}
}
);
return Age;
};
产品age.js
'use strict';
module.exports = function(sequelize, DataTypes){
var ProductAges = sequelize.define('ProductAges', {
id: {
type: DataTypes.INTEGER,
primaryKey: true,
autoIncrement: true
}
});
return ProductAges;
}
在Create函数中，在产品控制器中：
exports.create = function(req, res){
// save and return and instance of product on the res object
console.log('Request Body ==> ', req.body);
// {
// sku: '123',
// name: 'ប៉ោម',
// value: 'Apple',
// body: 'ល្អណាស់',
// ages:[{
// id: 1,
// name: 'តិចជាង ១៩ ឆ្នាំ',
// value: 'less_than_19',
// createdAt: '2016-07-08T12:47:06.000Z',
// updatedAt: '2016-07-08T13:10:10.000Z',
// ticked: true
// },{
// id: 3,
// name: 'ចន្លោះ ២០ ទៅ ២៤ ឆ្នាំ',
// value: 'between_20_24',
// createdAt: '2016-07-08T12:59:05.000Z',
// updatedAt: '2016-07-08T12:59:05.000Z',
// ticked: true
// }]
// }
db.Product.create(req.body).then(function(product){
if (!product){
return res.send('user/signup', {errors: new StandardError('Product could not be created')});
}
else{
return res.jsonp(product);
}
}).catch(function(err){
return res.send('users/signup', {
error: err,
status: 500
})
})
};
这只是为了插入产品而工作正常。但是，我还想根据Sequelize Docs here使用'addAges'函数插入ProductAges模型。
所以，我将create function controller修改为：
exports.create = function(req, res){
// save and return and instance of product on the res object
db.Product.create(req.body).then(function(product){
if (!product){
return res.send('user/signup', {errors: new StandardError('Product could not be created')});
}
else{
db.Product.addAges(req.body.ages);
return res.jsonp(product);
}
}).catch(function(err){
return res.send('users/signup', {
error: err,
status: 500
})
})
};
我收到了这个错误日志：
verbose: Executing (default): SELECT `data` FROM `Sessions` AS `Session` WHERE `Session`.`sid` = 'Qzad_nN3rMR2RrsZ-Oa3H4A5BfL2optm' LIMIT 1;
verbose: Executing (default): SELECT `id`, `name`, `email`, `username`, `hashedPassword`, `provider`, `salt`, `facebookUserId`, `twitterUserId`, `twitterKey`, `twitterSecret`, `github`, `openId`, `createdAt`, `updatedAt` FROM `Users` AS `User` WHERE `User`.`id` = 1;
info: Session: { id: 1, username: john }
verbose: Executing (default): INSERT INTO `Products` (`id`,`sku`,`name`,`value`,`body`,`createdAt`,`updatedAt`) VALUES (DEFAULT,'123','ប៉ោម','Apple','ល្អណាស់','2016-07-08 16:26:44','2016-07-08 16:26:44');
Fri, 08 Jul 2016 16:26:44 GMT express deprecated res.send(status, body): Use res.status(status).send(body) instead at app/controllers/products.js:45:20
verbose: Executing (default): SELECT `id`, `sid`, `data`, `createdAt`, `updatedAt` FROM `Sessions` AS `Session` WHERE `Session`.`sid` = 'Qzad_nN3rMR2RrsZ-Oa3H4A5BfL2optm' LIMIT 1;
Unhandled rejection RangeError: Invalid status code: 0
at ServerResponse.writeHead (_http_server.js:192:11)
at ServerResponse.writeHead (/Users/Roller/Working/Web/ponds_web/node_modules/on-headers/index.js:55:19)
at ServerResponse.writeHead (/Users/Roller/Working/Web/ponds_web/node_modules/on-headers/index.js:55:19)
at ServerResponse.writeHead (/Users/Roller/Working/Web/ponds_web/node_modules/on-headers/index.js:55:19)
at ServerResponse._implicitHeader (_http_server.js:157:8)
at ServerResponse.write (/Users/Roller/Working/Web/ponds_web/node_modules/compression/index.js:83:14)
at writetop (/Users/Roller/Working/Web/ponds_web/node_modules/express-session/index.js:286:26)
at ServerResponse.end (/Users/Roller/Working/Web/ponds_web/node_modules/express-session/index.js:328:16)
at ServerResponse.send (/Users/Roller/Working/Web/ponds_web/node_modules/express/lib/response.js:205:10)
at ServerResponse.json (/Users/Roller/Working/Web/ponds_web/node_modules/express/lib/response.js:250:15)
at ServerResponse.send (/Users/Roller/Working/Web/ponds_web/node_modules/express/lib/response.js:152:21)
at .<anonymous> (/Users/Roller/Working/Web/ponds_web/app/controllers/products.js:45:20)
at tryCatcher (/Users/Roller/Working/Web/ponds_web/node_modules/bluebird/js/release/util.js:16:23)
at Promise._settlePromiseFromHandler (/Users/Roller/Working/Web/ponds_web/node_modules/bluebird/js/release/promise.js:504:31)
at Promise._settlePromise (/Users/Roller/Working/Web/ponds_web/node_modules/bluebird/js/release/promise.js:561:18)
at Promise._settlePromise0 (/Users/Roller/Working/Web/ponds_web/node_modules/bluebird/js/release/promise.js:606:10)
Unhandled rejection RangeError: Invalid status code: 0
at ServerResponse.writeHead (_http_server.js:192:11)
at ServerResponse.writeHead (/Users/Roller/Working/Web/ponds_web/node_modules/on-headers/index.js:55:19)
at ServerResponse.writeHead (/Users/Roller/Working/Web/ponds_web/node_modules/on-headers/index.js:55:19)
at ServerResponse.writeHead (/Users/Roller/Working/Web/ponds_web/node_modules/on-headers/index.js:55:19)
at ServerResponse._implicitHeader (_http_server.js:157:8)
at ServerResponse.end (/Users/Roller/Working/Web/ponds_web/node_modules/compression/index.js:102:14)
at writeend (/Users/Roller/Working/Web/ponds_web/node_modules/express-session/index.js:257:22)
at onsave (/Users/Roller/Working/Web/ponds_web/node_modules/express-session/index.js:325:11)
at .<anonymous> (/Users/Roller/Working/Web/ponds_web/node_modules/express-sequelize-session/lib/e4store.js:90:51)
at tryCatcher (/Users/Roller/Working/Web/ponds_web/node_modules/bluebird/js/release/util.js:16:23)
at Promise._settlePromiseFromHandler (/Users/Roller/Working/Web/ponds_web/node_modules/bluebird/js/release/promise.js:504:31)
at Promise._settlePromise (/Users/Roller/Working/Web/ponds_web/node_modules/bluebird/js/release/promise.js:561:18)
at Promise._settlePromise0 (/Users/Roller/Working/Web/ponds_web/node_modules/bluebird/js/release/promise.js:606:10)
at Promise._settlePromises (/Users/Roller/Working/Web/ponds_web/node_modules/bluebird/js/release/promise.js:681:18)
at Async._drainQueue (/Users/Roller/Working/Web/ponds_web/node_modules/bluebird/js/release/async.js:138:16)
at Async._drainQueues (/Users/Roller/Working/Web/ponds_web/node_modules/bluebird/js/release/async.js:148:10)
error: RangeError: Invalid status code: 0
at ServerResponse.writeHead (_http_server.js:192:11)
at ServerResponse.writeHead (/Users/Roller/Working/Web/ponds_web/node_modules/on-headers/index.js:55:19)
at ServerResponse.writeHead (/Users/Roller/Working/Web/ponds_web/node_modules/on-headers/index.js:55:19)
at ServerResponse.writeHead (/Users/Roller/Working/Web/ponds_web/node_modules/on-headers/index.js:55:19)
at ServerResponse._implicitHeader (_http_server.js:157:8)
at ServerResponse.end (/Users/Roller/Working/Web/ponds_web/node_modules/compression/index.js:102:14)
at writeend (/Users/Roller/Working/Web/ponds_web/node_modules/express-session/index.js:257:22)
at onsave (/Users/Roller/Working/Web/ponds_web/node_modules/express-session/index.js:325:11)
at .<anonymous> (/Users/Roller/Working/Web/ponds_web/node_modules/express-sequelize-session/lib/e4store.js:88:51)
at tryCatcher (/Users/Roller/Working/Web/ponds_web/node_modules/bluebird/js/release/util.js:16:23)
at Promise._settlePromiseFromHandler (/Users/Roller/Working/Web/ponds_web/node_modules/bluebird/js/release/promise.js:504:31)
at Promise._settlePromise (/Users/Roller/Working/Web/ponds_web/node_modules/bluebird/js/release/promise.js:561:18)
at Promise._settlePromise0 (/Users/Roller/Working/Web/ponds_web/node_modules/bluebird/js/release/promise.js:606:10)
at Promise._settlePromises (/Users/Roller/Working/Web/ponds_web/node_modules/bluebird/js/release/promise.js:685:18)
at Async._drainQueue (/Users/Roller/Working/Web/ponds_web/node_modules/bluebird/js/release/async.js:138:16)
at Async._drainQueues (/Users/Roller/Working/Web/ponds_web/node_modules/bluebird/js/release/async.js:148:10)
Warning: Unexpected block "main" on line 3 of /Users/Roller/Working/Web/ponds_web/app/views/500.jade. This block is never used. This warning will be an error in v2.0.0
然后，我尝试使用Promise：
exports.create = function(req, res){
// save and return and instance of product on the res object
db.Product.create(req.body).then(function(product){
if (!product){
return res.send('user/signup', {errors: new StandardError('Product could not be created')});
}
else{
db.Product.addAges(ages).then(function(){
return res.jsonp(product);
});
}
}).catch(function(err){
return res.send('users/signup', {
error: err,
status: 500
})
})
};
然后我收到了这个错误：
verbose: Executing (default): SELECT `data` FROM `Sessions` AS `Session` WHERE `Session`.`sid` = 'Qzad_nN3rMR2RrsZ-Oa3H4A5BfL2optm' LIMIT 1;
verbose: Executing (default): SELECT `id`, `name`, `email`, `username`, `hashedPassword`, `provider`, `salt`, `facebookUserId`, `twitterUserId`, `twitterKey`, `twitterSecret`, `github`, `openId`, `createdAt`, `updatedAt` FROM `Users` AS `User` WHERE `User`.`id` = 1;
info: Session: { id: 1, username: john }
verbose: Executing (default): INSERT INTO `Products` (`id`,`sku`,`name`,`value`,`body`,`createdAt`,`updatedAt`) VALUES (DEFAULT,'123','ប៉ោម','Apple','ល្អណាស់','2016-07-08 16:30:17','2016-07-08 16:30:17');
verbose: Executing (default): SELECT `id`, `sid`, `data`, `createdAt`, `updatedAt` FROM `Sessions` AS `Session` WHERE `Session`.`sid` = 'Qzad_nN3rMR2RrsZ-Oa3H4A5BfL2optm' LIMIT 1;
Unhandled rejection RangeError: Invalid status code: 0
at ServerResponse.writeHead (_http_server.js:192:11)
at ServerResponse.writeHead (/Users/Roller/Working/Web/ponds_web/node_modules/on-headers/index.js:55:19)
at ServerResponse.writeHead (/Users/Roller/Working/Web/ponds_web/node_modules/on-headers/index.js:55:19)
at ServerResponse.writeHead (/Users/Roller/Working/Web/ponds_web/node_modules/on-headers/index.js:55:19)
at ServerResponse._implicitHeader (_http_server.js:157:8)
at ServerResponse.write (/Users/Roller/Working/Web/ponds_web/node_modules/compression/index.js:83:14)
at writetop (/Users/Roller/Working/Web/ponds_web/node_modules/express-session/index.js:286:26)
at ServerResponse.end (/Users/Roller/Working/Web/ponds_web/node_modules/express-session/index.js:328:16)
at ServerResponse.send (/Users/Roller/Working/Web/ponds_web/node_modules/express/lib/response.js:205:10)
at ServerResponse.json (/Users/Roller/Working/Web/ponds_web/node_modules/express/lib/response.js:250:15)
at ServerResponse.send (/Users/Roller/Working/Web/ponds_web/node_modules/express/lib/response.js:152:21)
at .<anonymous> (/Users/Roller/Working/Web/ponds_web/app/controllers/products.js:46:20)
at tryCatcher (/Users/Roller/Working/Web/ponds_web/node_modules/bluebird/js/release/util.js:16:23)
at Promise._settlePromiseFromHandler (/Users/Roller/Working/Web/ponds_web/node_modules/bluebird/js/release/promise.js:504:31)
at Promise._settlePromise (/Users/Roller/Working/Web/ponds_web/node_modules/bluebird/js/release/promise.js:561:18)
at Promise._settlePromise0 (/Users/Roller/Working/Web/ponds_web/node_modules/bluebird/js/release/promise.js:606:10)
Unhandled rejection RangeError: Invalid status code: 0
at ServerResponse.writeHead (_http_server.js:192:11)
at ServerResponse.writeHead (/Users/Roller/Working/Web/ponds_web/node_modules/on-headers/index.js:55:19)
at ServerResponse.writeHead (/Users/Roller/Working/Web/ponds_web/node_modules/on-headers/index.js:55:19)
at ServerResponse.writeHead (/Users/Roller/Working/Web/ponds_web/node_modules/on-headers/index.js:55:19)
at ServerResponse._implicitHeader (_http_server.js:157:8)
at ServerResponse.end (/Users/Roller/Working/Web/ponds_web/node_modules/compression/index.js:102:14)
at writeend (/Users/Roller/Working/Web/ponds_web/node_modules/express-session/index.js:257:22)
at onsave (/Users/Roller/Working/Web/ponds_web/node_modules/express-session/index.js:325:11)
at .<anonymous> (/Users/Roller/Working/Web/ponds_web/node_modules/express-sequelize-session/lib/e4store.js:90:51)
at tryCatcher (/Users/Roller/Working/Web/ponds_web/node_modules/bluebird/js/release/util.js:16:23)
at Promise._settlePromiseFromHandler (/Users/Roller/Working/Web/ponds_web/node_modules/bluebird/js/release/promise.js:504:31)
at Promise._settlePromise (/Users/Roller/Working/Web/ponds_web/node_modules/bluebird/js/release/promise.js:561:18)
at Promise._settlePromise0 (/Users/Roller/Working/Web/ponds_web/node_modules/bluebird/js/release/promise.js:606:10)
at Promise._settlePromises (/Users/Roller/Working/Web/ponds_web/node_modules/bluebird/js/release/promise.js:681:18)
at Async._drainQueue (/Users/Roller/Working/Web/ponds_web/node_modules/bluebird/js/release/async.js:138:16)
at Async._drainQueues (/Users/Roller/Working/Web/ponds_web/node_modules/bluebird/js/release/async.js:148:10)
error: RangeError: Invalid status code: 0
at ServerResponse.writeHead (_http_server.js:192:11)
at ServerResponse.writeHead (/Users/Roller/Working/Web/ponds_web/node_modules/on-headers/index.js:55:19)
at ServerResponse.writeHead (/Users/Roller/Working/Web/ponds_web/node_modules/on-headers/index.js:55:19)
at ServerResponse.writeHead (/Users/Roller/Working/Web/ponds_web/node_modules/on-headers/index.js:55:19)
at ServerResponse._implicitHeader (_http_server.js:157:8)
at ServerResponse.end (/Users/Roller/Working/Web/ponds_web/node_modules/compression/index.js:102:14)
at writeend (/Users/Roller/Working/Web/ponds_web/node_modules/express-session/index.js:257:22)
at onsave (/Users/Roller/Working/Web/ponds_web/node_modules/express-session/index.js:325:11)
at .<anonymous> (/Users/Roller/Working/Web/ponds_web/node_modules/express-sequelize-session/lib/e4store.js:88:51)
at tryCatcher (/Users/Roller/Working/Web/ponds_web/node_modules/bluebird/js/release/util.js:16:23)
at Promise._settlePromiseFromHandler (/Users/Roller/Working/Web/ponds_web/node_modules/bluebird/js/release/promise.js:504:31)
at Promise._settlePromise (/Users/Roller/Working/Web/ponds_web/node_modules/bluebird/js/release/promise.js:561:18)
at Promise._settlePromise0 (/Users/Roller/Working/Web/ponds_web/node_modules/bluebird/js/release/promise.js:606:10)
at Promise._settlePromises (/Users/Roller/Working/Web/ponds_web/node_modules/bluebird/js/release/promise.js:685:18)
at Async._drainQueue (/Users/Roller/Working/Web/ponds_web/node_modules/bluebird/js/release/async.js:138:16)
at Async._drainQueues (/Users/Roller/Working/Web/ponds_web/node_modules/bluebird/js/release/async.js:148:10)
Warning: Unexpected block "main" on line 3 of /Users/Roller/Working/Web/ponds_web/app/views/500.jade. This block is never used. This warning will be an error in v2.0.0
这是我可以去的地方。在创建新产品后，我真的不想编写ProductAges控制器来手动将ProductId和AgeId添加到ProductAges模型中。由于已经有一个内置函数可以添加交集表数据。 Sequelize Belongs-To-Many associations我确信有一种更简单的方法。
请帮忙指导。谢谢。
答案 0 :(得分：0)
您可以一次创建product及其相关的ages。见Creating elements of a "HasMany" or "BelongsToMany" association。首先尝试这种方法。