数组中mongoid更新内容 [英] mongoid update elements within array

问题描述

我使用mongoid 3.1使用Ruby 1.9.3，我试图更新数组内的值。我可以成功在MongoDB的CLI中执行以下命令，但似乎无法找到合适的解决方案/翻译mongoid。

I am using mongoid 3.1 with Ruby 1.9.3 and I am trying to update a value within an array. I can successfully perform the following command in mongodb's CLI, but can't seem to find the appropriate solution/translation for mongoid.

user.update( { activities: { $elemMatch: { uuid: "1111111-xxxx-xxxx" }}}, { $set: { 'activities.$.submitted': true }})

有关背景文件如下：

{
   "_id" : ....,
   "user_name" : "bob",
   "activities: [ 
       {
          uuid: "1111111-xxxx-xxxx",
          submitted: true,
       },
       {
          uuid: "222222-xxxx-xxxx",
          submitted: false,
       },
       {
          uuid: "333333-xxxx-xxxx",
          submitted: false,
       }
   ]
}

的目标是真正基于uuid的值来更改提交。从我可以告诉，一切mongoid的更新的解决方案只与属性在处理文档的根，不能为$位置运营商的选择。

The goal is to change submitted to true based on the uuid value. From what I can tell, all of the "updating" solutions in mongoid only deal with the attributes at the root of the document and can't have options for the $ positional operator.

任何帮助将是AP preciated。

Any help would be appreciated.

感谢您

推荐答案

看起来像我发现在GitHub上讨论的问题的答案。

Looks like I found the answer in a github issue discussion.

我的解决方案是：

User.elem_match(activities: { type: "redemption" }).elem_match(activities: { uuid: uuid }).update("$set" => {"activities.$.submitted" => true })

这篇关于数组中mongoid更新内容的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！