问输入zipcode，显示一定半径内的用户

EN

import zipcodes from 'zipcodes';

// Create `2dsphere` index
const collection = new Mongo.Collection('someCollectionName');
collection._ensureIndex({zipLoc: '2dsphere'});

Meteor.Methods({
  formSubmit(data) {
    const zipData = zipcodes.lookup(data.zipcode);
    // Save location as geospatial data:
    collection.insert({
      zipLoc: {
        type: "Point",
        coordinates: [zipData.longitude, zipData.latitude]
      }
    });
  }
});

const searchRadius = 10000; // 10km in meters
const zip = 90210;
const zipData = zipcodes.lookup(zip);

collection.find({
  zipLoc: {
    $near: {
      $geometry: [zipData.longitude, zipData.latitude],
      $maxDistance: searchRadius
    }
  }
});