使用中间件时,Mongoose GeoJSON会引发“ MongoError:无法提取地理键”

时间:2020-04-17 15:32:46

标签: javascript node.js mongodb mongoose geojson

我在NodeJS项目中使用Mongoose,并且在子文档数组中有一个GeoJSON对象:

ParentSchema.js

import mongoose from 'mongoose';
import ChildeSchema from '[path]/ChildSchema.js';

const ParentSchema = mongoose.Schema({
  ...
  children: [ChildSchema],
  ...
});

ChildSchema.js

import mongoose from 'mongoose';
import geocoder from '[path]/geocoder.js'; // where I initialize the geocoder

const ChildSchema = mongoose.Schema({
  ...
  location: {    
    // GeoJSON
    type: {
      type: String,
      enum: ['Point'],
      default: 'Point'
    },
    // first enter longitude, then latitude
    coordinates: {
      type: [Number]
    //index: '2dsphere'  <-- committed out, also tried with the index
    }
  },
  ...
});

// middleware goes here

export default ChildSchema;

我在ChildSchema中添加了一个中间件,该中间件使用与{em> mapquest 一起使用的geocoder来获取位置信息。

中间件(在ChildSchema.js中):

ChildScheme.pre('save', async function (next) {

  const geoDetails = await geocoder.geocode(this.fullAddress); // works fine, I'm getting the location

  // values are legal
  const latitude = geoDetails[0].latitude;
  const longitude = geoDetails[0].longitude;

  this.location = {
      type: 'Point',
      coordinates: [longitude, latitude] 
    };

  next();
}

当我尝试创建新的父级文档(将POST与application / json Content-Type结合使用)时,出现以下错误:

MongoError:无法提取地理键: {the_parent_document} 地理元素必须是数组或对象:类型:\“ Point \”

我尝试应用在以下问题中找到的答案,但没有帮助:
mongoose geojson in schema, “Can't extract geo keys” error
MongoError: Can't extract geo keys
Mongoose Schema for geoJson coordinates
How does one represent MongoDB GeoJSON fields in a Mongoose Schema?
Can't extract geo keys, unknown GeoJSON type: { coordinates: [ 13.42493130000003, 52.50074619999999 ]

我想念什么?谢谢您提前回答!

1 个答案:

答案 0 :(得分:1)

将密钥的名称更改为{{1}}以外的其他名称,并且有效...