上一篇文件中選擇的擴充套件<babenkoivan/scout-elasticsearch-driver>,該擴充套件已有方法whereGeoDistance查詢指定經緯度範圍內的資料,但是無法根據距離排序,由於依賴於laravel-scout,而該擴充套件並沒有實現Geo的sort,但是經過透過Elasticsearch官方文件及該擴充套件原始碼的閱讀,還是找到兩個途徑實現該功能:
1.1在ScoutBuilderServiceProvider的boot中macro排序的sort方法:
public function boot()
{
\Laravel\Scout\Builder::macro('sortRaw', function (array $value) {
$this->orders[] = $value;
return $this;
});
}
1.2在ElasticEngine的map方法中增加對sort的處理
if (isset($hit['highlight'])) {
$model->highlight = new Highlight($hit['highlight']);
}
if (isset($hit['sort'])) {
$model->sort = $hit['sort'];
}
1.3呼叫
$para = $request->input('para');
$position = [130, -20];
$sort_geo_distance = [
'_geo_distance' => [
'location' => $position,
'order' => 'asc',
'unit' => 'km',
'distance_type' => 'plane',
]
];
$re = Shop::search($para)
->whereGeoDistance('location', $position, '10km')
->sortRaw($sort_geo_distance) ->get();
1.4 由於該方法涉及到擴充套件原始碼的修改,所有並不推薦使用,下面是第二種比較通用的實現
2.使用已有的searchRaw方法實現排序
$position = [130, -20];
$sort_geo_distance = [
'_geo_distance' => [
'location' => $position,
'order' => 'asc',
'unit' => 'km',
'distance_type' => 'plane',
]
];
$query = [
"bool" => [
'must' => [
'match' => [
'name' => $para
]
],
"filter" => [
"geo_distance" => [
"distance" => "10000km",
"location" => $position
]
]
]
];
$result = Shop::searchRaw([
'query' => $query,
'sort' => $sort_geo_distance
]);
由於返回結果巢狀太多其他資料,並不直觀,所以封裝一個方法來對結果進行處理
function format_elastic_result($results)
{
return Collection::make($results['hits']['hits'])
->map(function ($hit) {
$model = $hit['_source'];
if (isset($hit['highlight'])) {
$model['highlight'] = new Highlight($hit['highlight']);
}
if (isset($hit['sort'])) {
$model['sort'] = $hit['sort'];
}
return $model;
})
->filter()
->values();
}
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