Sequelize：加入超越一级关系的表格

Question

我有以下关系：

• User有Subscription
• Subscription有Subject
• Subject有Lesson

如果这是一个多维数组，它看起来像这样：

`User` =>
      (`Subscription` => 
                 `Subject` => 
                     (`Lesson`, `Lesson`),
       `Subscription` => 
                 `Subject` =>
                     (`Lesson`, `Lesson`)
       ,  ...)

如何使用Sequelize查询保留此结构的完整数据集？如果我必须在“sequelize伪代码”中编写它，我会有类似的内容：

seq.User.findAll({
include[seq.Subscription.findAll({
include[seq.Subject.findAll({include: [seq.Lesson]}) ...

Answer 1

这应该是你需要的。你的伪代码几乎有想法/​​流程。它们可能是一种更有效的方式来编写/执行此操作？但这应该有用

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seq.User.findAll({
  where: {},
  include: [{
    model: seq.Subscription,
    include: [{
      model: seq.Subject,
      include: [{
        seq.Lesson
      }]
    }]
  }]
}).then(function(responseFromDB) {
  handle callback
});

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