我无法让 Mongoose 填充对象数组。
架构如下:
var topOrganisationsForCategorySchema = new mongoose.Schema({
category: String,
topOrganisations: [{
organisation: {
type: mongoose.Schema.Types.ObjectId,
ref: 'organisation'
},
model: mongoose.Schema.Types.Mixed
}]
});
module.exports = mongoose.model('topOrganisationsForCategory', topOrganisationsForCategorySchema);
我希望这个集合中的所有对象都填充了一组组织。
这是我尝试过的
TopOrganisationsForCategory
.find()
.exec(function(err, organisation) {
var options = {
path: 'topOrganisations.organisation',
model: 'organisation'
};
if (err) return res.json(500);
Organisation.populate(organisation, options, function(err, org) {
res.json(org);
});
});
var organisationSchema = new mongoose.Schema({
name: String,
aliases: [String],
categories: [String],
id: {
type: String,
unique: true
},
idType: String
});
organisationSchema.index({
name: 'text'
});
module.exports = mongoose.model('organisation', organisationSchema);
最佳答案
你很接近,但有几个注意事项:
- 以下代码假定您还具有
Oranisation
的架构/模型声明。 - 我不确定
model
属性是作为一个选项(这将是无效的)还是实际上是topOrganisations
的属性。
因此,我将 model
保留在其中,因为它不会引起任何问题,但请注意,如果您将它用作一个选项,它不会做您可能会做的事情认为是。
// Assuming this schema exists
var organisationSchema = new mongoose.Schema({...});
var topOrganisationsForCategorySchema = new mongoose.Schema({
category: String,
topOrganisations: [{
organisation: {
type: mongoose.Schema.Types.ObjectId,
ref: 'Organisation' // Model name convention is to begin with a capital letter
}
// Is `model` supposed to be for the ref above? If so, that is declared in the
// Organisation model
model: mongoose.Schema.Types.Mixed
}]
});
// Assuming these model definitions exist
var Organisation = mongoose.model('Organisation', organisationSchema);
var TopOrganisationsForCategory = mongoose.model('TopOrganisationsForCategory', TopOrganisationsForCategorySchema);
// Assuming there are documents in the organisations collection
TopOrganisationsForCategory
.find()
// Because the `ref` is specified in the schema, Mongoose knows which
// collection to use to perform the population
.populate('topOrganisations.organisation')
.exec(function(err, orgs) {
if (err) {
return res.json(500);
}
res.json(orgs);
});
关于mongodb - Mongoose 填充数组,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/31149179/