javascript - Algolia:如何根据值对搜索进行排名？

Question

如何根据给定值对我的算法记录进行排名？该值是根据用户的 IP 位置动态变化的。

我希望 SC 状态显示在列表中的第一个位置，我该怎么做？

例如我有一条记录

[
 {
   "category":"Emergency Department",
   "address": {"state": "SC"}
   ......
 },
 {
   "category":"Emergency Department",
   "address": {"state": "NC"}
   ......
 }, 
 {
   "category":"Emergency Department",
   "address": {"state": "NC"},
   ......
 }, 
 {
   "category":"Radiology",
   "address": {"state": "WV"}
   ......
 }, 
 {
   "category":"PROVIDENCE HOSPITAL",
   "address": {"state": "TN"}
   ......
 }, 
 {
   "category":"PROVIDENCE HOSPITAL",
   "address": {"state": "TN"}
   ......
 }, 
]

我这样写了我的搜索代码

algoliaIndex.search({
   query: 'Emergency Department' +' '+ 'SC',
 }, function(err, hits) {
  console.log(hits.hits);
});

我的索引设置

[
 'searchableAttributes' => [
  'general_name',
  'name',
  'category',
  'address.city',
  'address.state',
  'address.zip_code',
  ],
 'customRanking' => [
   "desc(address.state)",
   "desc(general_name)"
  ],
]

Answer 1

您可以使用地理搜索功能根据用户的位置对结果进行排序。这是实现它的指南:https://www.algolia.com/doc/guides/geo-search/geo-search-overview/#filter-and-sort-around-a-location

API允许您直接提供ip，它会自动转换为相应的坐标:https://www.algolia.com/doc/guides/geo-search/geo-search-overview/#by-looking-at-the-ip-address

要实现此目的，您需要将您的 address.state 字段转换为纬度/经度坐标才能使其正常工作。你可以看看这个SO线程来找到一个数据库来做到这一点:Latitude and Longitude based on Zip Code