EDIT/ANSWER: this works fine in mongoose >= 3.0 also
编辑/答案:这也适用于mongoose> = 3.0
I have a mongoose schema that looks like so:
我有一个mongoose架构,看起来像这样:
mongoose = require 'mongoose'
ObjectId = mongoose.Schema.ObjectId
VehicleSchema = new mongoose.Schema
make: String
model: String
year: Number
body: String
fuel: String
transmission: String
parts: [ { type: ObjectId, ref: 'Part' } ]
VehicleSchema.virtual('display_name').get ->
return this.make + ' ' + this.model + ' ' + this.year
VehicleModel = mongoose.model 'Vehicle', VehicleSchema
module.exports =
Schema: VehicleSchema
Model: VehicleModel
I add 'parts' to the vehicle like this:
我将“零件”添加到车辆中,如下所示:
Vehicle.Model.findById id, (err, vehicle) ->
unless err
part = new Part.Model {
...details
}
part.save (err, doc) ->
unless err
vehicle.parts.push doc
vehicle.save()
else
console.error err
which seems to work:
这似乎工作:
{ "_id" : ObjectId("5027bd4340b00b897a000002"), "body" : "car", "fuel" : "unleaded", "make" : "stackover", "model" : "modelname", "parts" : [ ObjectId("5027bd5140b00b897a000006") ], "transmission" : "manual", "year" : 21212 }
but when I try and populate the parts:
但是当我尝试填充部件时:
Vehicle.Model
.findById(vehicle_id)
.populate('parts')
.exec (err, doc) ->
if err
console.error err
else
console.error doc
I get an error:
我收到一个错误:
TypeError: Property 'model' of object { parts: [] } is not a function at model.populate [as _populate]
What gives? I had another model/controller combination that was almost a carbon copy of this that worked perfectly (I've pretty much find/replaced the nouns and it still breaks, seriously freaking out here!)
是什么赋予了?我有另一个模型/控制器组合几乎是这个完美工作的副本(我几乎找到/替换名词,它仍然打破,严重吓坏了!)
2 个解决方案
#1
3
I think its likely that the name "model" is used internally, and the definition of VehicleSchema is clobbering something that mongoose expects to be a function with the "String" type.
我认为很可能在内部使用名称“model”,而VehicleSchema的定义正在破坏mongoose希望成为具有“String”类型的函数的东西。
#2
2
The definition of parts
in the schema looks off. Shouldn't refs
be ref:
?
模式中部件的定义很容易。不应该参考ref:?
parts: [ { type: ObjectId, ref: "Part" } ]
#1
3
I think its likely that the name "model" is used internally, and the definition of VehicleSchema is clobbering something that mongoose expects to be a function with the "String" type.
我认为很可能在内部使用名称“model”,而VehicleSchema的定义正在破坏mongoose希望成为具有“String”类型的函数的东西。
#2
2
The definition of parts
in the schema looks off. Shouldn't refs
be ref:
?
模式中部件的定义很容易。不应该参考ref:?
parts: [ { type: ObjectId, ref: "Part" } ]