Sequelize.js Node.js: 如何将已创建的对象传递给创建多对多关系？

Question

从这篇文章开始：Node.js / Sequelize.js / Express.js - How to insert into many-to-many association? (sync/async?)

答案只展示了当你创建Individual和Email时，然而我想要创建一个已经创建好的电子邮件的个人。

正确创建个人和电子邮件之后的原始答案：

models.Individual.create({
  name: "Test"
}).then(function(createdIndividual) { // note the argument
  models.Email.create({
    address: "[e-mail]"
  }).then(function(createdEmail) { // note the argument
    createdIndividual.addEmail(createdEmail)
      .then(function(addedEmail) { // note th-- well you get the idea :)
        console.log("Success");
      });
  })
});

为了创建一个已有电子邮件地址的个人账户，我进行了如下修改：

models.Individual.create({
  name: "Test"
}).then(function(createdIndividual) { // note the argument
    //This email id exists in the Email table.
    var email = {
        id: 1
    }
    createdIndividual.addEmail(email)
    .then(function(addedEmail) {
        console.log("Success");
    });
});

然后我收到了这个错误：

Unhandled rejection TypeError: val.replace is not a function
        at Object.SqlString.escape (/Users/Roller/Working/Web/ponds_web/node_modules/sequelize/lib/sql-string.js:63:15)
        at Object.QueryGenerator.escape (/Users/Roller/Working/Web/ponds_web/node_modules/sequelize/lib/dialects/abstract/query-generator.js:977:22)
        at /Users/Roller/Working/Web/ponds_web/node_modules/sequelize/lib/dialects/abstract/query-generator.js:2203:23
        at Array.map (native)
        at Object.QueryGenerator.whereItemQuery (/Users/Roller/Working/Web/ponds_web/node_modules/sequelize/lib/dialects/abstract/query-generator.js:2202:49)
        at /Users/Roller/Working/Web/ponds_web/node_modules/sequelize/lib/dialects/abstract/query-generator.js:1903:25
        at /Users/Roller/Working/Web/ponds_web/node_modules/sequelize/node_modules/lodash/lodash.js:4389:15
        at baseForOwn (/Users/Roller/Working/Web/ponds_web/node_modules/sequelize/node_modules/lodash/lodash.js:2652:24)
        at Function.forOwn (/Users/Roller/Working/Web/ponds_web/node_modules/sequelize/node_modules/lodash/lodash.js:12254:24)
        at Object.QueryGenerator.whereItemsQuery (/Users/Roller/Working/Web/ponds_web/node_modules/sequelize/lib/dialects/abstract/query-generator.js:1902:9)
        at Object.QueryGenerator.getWhereConditions (/Users/Roller/Working/Web/ponds_web/node_modules/sequelize/lib/dialects/abstract/query-generator.js:2337:19)
        at Object.QueryGenerator.selectQuery (/Users/Roller/Working/Web/ponds_web/node_modules/sequelize/lib/dialects/abstract/query-generator.js:1451:28)
        at QueryInterface.select (/Users/Roller/Working/Web/ponds_web/node_modules/sequelize/lib/query-interface.js:669:25)
        at .<anonymous> (/Users/Roller/Working/Web/ponds_web/node_modules/sequelize/lib/model.js:1390:32)
        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)

我认为这个错误是因为我的电子邮件对象不是Sequelize对象。

心中的问题：

我们应该通过从Email模型查询来将电子邮件对象转换为Sequalize对象吗？这样会有效吗？

在考虑代码清晰和性能的情况下，将该对象转换为Sequalize的更好方法是什么？

如果我要在创建新产品时添加多个电子邮件到Individual_Email中怎么办？例如，有多个电子邮件ID。

请帮忙提供建议。谢谢。

- Vicheanak

---

请查看此链接：http://stackoverflow.com/a/38305458/1159775 - hebinda

Answer 1

你说得对，问题在于电子邮件不是sequelize对象。如果在添加之前从数据库中检索它，则可以正常工作。另一方面，sequelize允许您通过id设置子项。因此，您可以像这样做：

models.Individual.create({
  name: "Test"
}).then(function(createdIndividual) {
    createdIndividual.setEmails([emailIds]) //emails id array
    .then(function() {
        console.log("Success");
    });
});

- belyid