Question

我一直试图通过猫鼬来确定忍者与geoLocation点之间的距离。我已经尝试了所有的东西，但不知怎的，我找不到Mongoose的正确文档，这些是一些新的变化。

像这样：

＆＃13;

const express = require('express');
const router = express.Router();
const Ninja = require('../models/ninja');

// get a list of ninjas from the database
router.get('/ninjas', (req, res, next) => {
    Ninja.aggregate([
        {
            $geoNear: {
                near: { type: "Point", coordinates: [ parseFloat(req.query.lng) , parseFloat(req.query.lat) ] },
                maxDistance: 100000,
                distanceField: "distance",
                spherical: true
            }
        }
    ]).then(function(ninjas){
        res.send(ninjas);
    }).catch(next)
});

＆＃13;

但是，当我通过Postman将params添加到URL时，我找不到它。

这是我的架构：

＆＃13;

const mongoose = require ('mongoose');
const Schema = mongoose.Schema;

// CREATE GEOLOCATION SCHEMA
const GeoSchema = new Schema({
   type:{
       type: String,
       default: "Point"
   },
   coordinates: {
       type: [Number],
       index: "2dsphere"
   }
});

// CREATE NINJA SCHEMA AND MODEL
const NinjaSchema = new Schema({
    "name": {
        type: String,
        required: [true, 'Name field is required']
    },
    "rank": {
        type: String,
    },
    "available": {
        type: Boolean,
        default: false
    },
    "geometry": GeoSchema
});

const Ninja = mongoose.model('ninja', NinjaSchema);

module.exports = Ninja;

＆＃13;

Answer 1

更正您的忍者模型和模式代码

// create ninja Schema & model
const NinjaSchema = new Schema({
name: {
    type: String,
    required: [true, 'Name field is required']
},
rank: {
    type: String
},
available: {
    type: Boolean,
    default: false
},
geometry: GeoSchema

}）;

在Mongoose中使用geoNear

1 个答案: