在mongo中验证数据的最佳方法是什么? [英] What is the best way to validate data in mongo?

问题描述

验证插入或更新到MongoDB中的数据的最佳方法是什么?是否编写某种服务器验证的Java代码进行验证?

What's the best way to validate data being inserted or updated into MongoDB? Is it to write some sort of server executed Javascript code that does the validation?

推荐答案

从 MongoDB 3.2 开始，他们添加了幻灯片).

Starting from MongoDB 3.2 they added document validation (slides).

您可以使用 validator 为每个集合指定验证规则.使用几乎所有mongo查询运算符($geoNear，$near，$nearSphere，$text和$where除外)的选项.

You can specify validation rules for each collection, using validator option using almost all mongo query operators (except $geoNear, $near, $nearSphere, $text, and $where).

要使用验证器创建新集合，请使用:

To create a new collection with a validator, use:

db.createCollection("your_coll", {
  validator: { `your validation query` }
})

要将验证器添加到现有集合中，可以添加验证器:

To add a validator to the existing collection, you can add the validator:

db.createCollection("your_coll", {
  validator: { `your validation query` }
})

验证仅在插入/更新时起作用，因此，当您在旧集合上创建验证器时，先前的数据将不被验证(您可以为先前的数据编写应用程序级验证).您还可以指定 validationLevel 和 validationAction 来说明如果文档未通过验证会发生什么情况

Validation work only on insert/update, so when you create a validator on your old collection, the previous data will not be validated (you can write application level validation for a previous data). You can also specify validationLevel and validationAction to tell what will happen if the document will not pass the validation.

如果您尝试使用无法通过验证的内容插入/更新文档(并且未指定任何奇怪的validationLevel/action)，那么您会在writeResult上收到错误提示(可悲的是，该错误无法告诉您什么)失败，并且您仅获得默认的validation failed):

If you try to insert/update the document with something that fails the validation, (and have not specified any strange validationLevel/action) then you will get an error on writeResult (sadly enough the error does not tell you what failed and you get only default validation failed):

WriteResult({
   "nInserted" : 0,
   "writeError" : {
      "code" : 121,
      "errmsg" : "Document failed validation"
   }
})

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