我使用CakePHP 2.3。
解决方案我更喜欢为此使用virtualFields。实施取决于您使用的数据库。对于Postgres，它将如下所示：
MyModel.php
public function findSortedByDistanse（$ long，$ lat）{ $ distanceValue =calc_distance（$ lat，$ long，MyModel.lat，MyModel.lon）; $ this-> virtualFields ['distance'] = $ distanceValue; return $ this-> find（'all'，array（'conditions'=> array（'order'=&>'MyModel.distance ASC'）））; }其中calc_distance是Postgres的存储过程
参数： IN source_lat数字，IN source_lon数字，IN target_lat数字，IN target_lon数字 $ b 代码： $ p $ SELECT（3956 * 2 * ASIN（ SQRT（$ b $ （$（$ 1 - abs（$ 3））* pi（）/ 180/2），2）+ COS（$ 1 * pi（）/ 180）* COS ）* pi（）/ 180）* POWER（SIN（（$ 2 - $ 4）* pi（）/ 180/2），2））））
如果您更喜欢原始查询，请使用以下内容：
$ distanceValue =3956 * 2 * ASIN（SQRT（POWER（SIN（（{$ lat} -abs（MyModel.lat））* pi（）/ 180/2）， 2）+ COS（{$ lat} * pi（）/ 180）* COS（abs（MyModel.lat）* pi（）/ 180）* POWER（SIN（（{$ long} - MyModel.lon）* pi ）/ 180/2），2）））;
Im trying to build a small CakePHP website which has some lat and longitudes in the DB. A user performs a search query to locations (with giving her/his address) and the results needs to be ordered by distance from user to the location. I can already get the lat en lng when providing an adress (using the Google Maps API). I'm not sure how to build a CakePHP find with an distance order. Any ideas?
I'm using CakePHP 2.3.
解决方案I prefer to use virtualFields for this purpose. The implementation depends on DB you use. For Postgres it will look like following:
MyModel.php
public function findSortedByDistanse($long, $lat){ $distanceValue = "calc_distance($lat, $long, MyModel.lat, MyModel.lon)"; $this->virtualFields['distance'] = $distanceValue; return $this->find('all', array('conditions' => array( 'order' => 'MyModel.distance ASC' ))); }where calc_distance is a stored procedure for Postgres
Params: IN source_lat numeric, IN source_lon numeric, IN target_lat numeric, IN target_lon numeric
Code:
SELECT ( 3956 * 2 * ASIN ( SQRT ( POWER ( SIN ( ( $1 - abs($3) ) * pi()/180/2 ),2 ) + COS ( $1 * pi()/180 ) * COS ( abs($3) * pi()/180 ) * POWER ( SIN ( ( $2 - $4 ) * pi()/180 / 2 ), 2 ) ) ) )If you prefer raw query, use following:
$distanceValue = "3956 * 2 * ASIN(SQRT(POWER(SIN(({$lat}-abs(MyModel.lat))*pi()/180/2),2)+COS({$lat} * pi()/180)*COS(abs(MyModel.lat) * pi()/180)*POWER(SIN(({$long} - MyModel.lon)*pi()/180 / 2), 2)))";
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