Firebase Cloud功能中的Geofire查询 [英] Geofire Query in Firebase Cloud Function

问题描述

对不起，对于英语，我怀疑是否有可能在Firebase Cloud Func中使用其各自的key_enter和key_exited进行查询geofire，以便维护从我的位置?中提取的地理位置的列表.几十万.考虑到所有这些情况都是在用户在节点Firebase实时数据库中更新其地理位置时发生的，因此，成千上万的列表减少到用户位置附近的几分之一

Sorry for my english, I have a doubt it is possible to make a query geofire in Firebase Cloud Func, with their respective key_enter and key_exited, in order to maintain a list of the geographic points near my position ?, extracted from a few hundred thousand. Taking into account that all this happens when the user updates its geolocation in a node firebase realtime database, and this list of hundreds of thousands is reduced to a few near the position of the user

推荐答案

这是没有模块的样子

let functions = require('firebase-functions');

let GeoFire = require('geofire');

exports.testLocation = functions.database.ref('/items/{item}').onWrite(event => {
    let data = event.data.val();
    console.log(data);
    console.log(event.params.item);

    if (data.location && data.location.coords) {

       console.log('Update GeoFire');

       let ref = event.data.adminRef.parent.parent.child('/items_locations'));

      let key = event.params.test;
      let location = [data.location.coords.latitude, data.location.coords.longitude]);
      let geoFire = new GeoFire(ref);

      geoFire.set(key, location).then(() => {
         console.log('Update succesfull');
   }).catch(error => {
      console.log(error);
   });

  }
}

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