使用猫鼬按嵌套文档属性查找 [英] Use mongoose to find by a nested documents properties

问题描述

我目前有一个文档集合，每个文档都包含指向该集合中其他文档的数组.我需要查询此集合的文档，其中嵌套在数组中的文档包含某个属性.我希望这可以更清楚地解释我的要求:

I currently have a collection of documents that each contain arrays pointing at other documents within that collection. I need to query this collection for documents where the ones nested in arrays contain a certain property. I hope this will explain my request more clearly:

if doc.list1[0].prop = 'foo' or doc.list2[0].prop = 'foo' then select doc

我曾经尝试过使用.find()，但无济于事.

I have tried using .find() like this but to no avail.

{
    'doc.list1': 'foo',
    $or: [
        { 'doc.list2': 'foo' }
    ]
}

我在正确的轨道上吗?因为我不认为我是.这是我从文档中可以看到的最好的内容.

Am I on the right track? Because I don't think I am. This is the best I can gleam from the documentation.

修改

这是我实际的查询初始化，使用与Thomas的建议相同的布局.

Here is my actual query initialisation using the same layout as Thomas's suggestion.

var query = this.Word.find({
    $or: [
        { 'before.0.cleanWord': topic },
        { 'after.0.cleanWord': topic },
        { 'cleanWord': topic }
    ]
});

推荐答案

{
  $or: [
    { 'doc.list1.0.prop': 'foo' }
    { 'doc.list2.0.prop': 'foo' }
  ]
}

http://www.mongodb.org/display/DOCS /Advanced + Queries#AdvancedQueries-％24or

这篇关于使用猫鼬按嵌套文档属性查找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！