猫鼬填充子文档数组 [英] Mongoose populating array of subdocuments
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问题描述
很抱歉,如果已经提出此要求,我的搜索没有出现相同的情况.我有两个类似以下的模式:
Apologies if this has already been asked, my searches did not turn up the same situation. I have two schemas something like the below:
var experimentSchema = new mongoose.Schema({
name : 'string'
elements : [{
type : mongoose.Schema.ObjectId,
ref: 'Element'
}],
resources : [{
type : mongoose.Schema.ObjectId,
ref : 'Resource'
}],
})
var elementSchema = new mongoose.Schema({
name : 'string',
component : {
type : mongoose.Schema.ObjectId,
ref : 'Component'
}
})
我想进行大量填充,以便在我请求实验时得到一个包含elements
和resources
数组的对象,并且对于每个元素,字段component
也已填充.
I want to perform a deep population so that when I request an experiment I get an object with an array of elements
and resources
and for each of the elements the field component
has also been populated.
我已经尝试了以下几种方法:
I have tried a few things along the lines of:
Experiment.findOne(query).populate(['resources','elements','elements.component']).exec(...)
没有成功.谁能为这种类型的操作提供正确的语法?
without success. Can anyone provide the correct syntax for this type of operation?
提前谢谢!
推荐答案
希望有帮助.
models.User.findOne(query)
.populate([{
path: 'elements',
populate: {
path: 'components',
model: 'Component'
}
},{
path:'resources'
}])
.exec(...)
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