与猫鼬模式关联的数组? [英] Associative array with mongoose schema?

问题描述

在mongodb中使用关联数组是否被认为是不好的做法?我很好奇为什么猫鼬似乎没有在其Schema定义中提供此功能.

Is it considered bad practice to use associative arrays in mongodb? I'm curious as to why mongoose doesn't seem to provide this in its Schema definition.

推荐答案

如果使用关联数组"，则表示对象"，可以正常工作.您可以只使用常规的旧对象"，也可以指定特定的属性，也可以使用"mongoose.Schema.Types.Mixed"来允许各种类型.

If by "associative array", you mean "Object", that works fine. You can use just regular old "Object" or you can specify specific properties or you can use "mongoose.Schema.Types.Mixed" to allow varying types.

{
  //regular old javascript/json data types
  created: Date,
  //this works just fine
  statistics: Object,
  //or you can specify the shape of the object
  address: {state: String, line1: String},
  //for the extra features you get with a true subdocument
  nested: [SomeOtherMongooseSchema],
  //Could be array, boolean, number, whatever. Can vary with each document.
  grabBag: mongoose.Schema.Types.Mixed 
}

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