CakePHP在WHERE子句中的函数名称引用引号 [英] CakePHP putting quotes around function name in WHERE clause

问题描述

我使用PostgreSQL中的earthdistance模块中的各种函数，其中之一是 ll_to_earth 。给定一个纬度/经度组合，我试图通过CakePHP从我的数据库检索最近的点1.2.5稳定。

I'm using various functions from the earthdistance module in PostgreSQL, one of those being ll_to_earth. Given a latitude/longitude combination, I'm trying to retrieve the nearest point from my database via CakePHP 1.2.5 Stable.

// set dummy data
$latitude  =  30.4393696;
$longitude = -97.6200043;

// create a simple bounding box in the WHERE conditions, sort the points by location, and retrieve the nearest point
$location = $this->Location->find('first', array(
    'fields' => array(
        'id',
        'coords',
        "earth_distance(coords, ll_to_earth($latitude, $longitude)) AS distance",
    ),
    'conditions' => array(
        'coords >=' => 'll_to_earth(' . ($latitude - 0.5) . ', ' . ($longitude - 0.5) . ')',
        'coords <=' => 'll_to_earth(' . ($latitude + 0.5) . ', ' . ($longitude + 0.5) . ')',
    ),
    'order' => array('distance ASC'),
));

SQL输出（为了更容易阅读而格式化）看起来像这样：

The SQL output (formatted for the sake of easier reading) ends up looking like this:

SELECT
  "Location"."id" AS "Location__id",
  "Location"."coords" AS "Location__coords",
  earth_distance(coords, ll_to_earth(30.4393696, -97.6200043)) AS distance FROM "locations" AS "Location"
WHERE
  "coords" >= 'll_to_earth(29.9393696, -97.1200043)' AND
  "coords" <= 'll_to_earth(30.9393696, -96.1200043)'
ORDER BY
  "distance" ASC
LIMIT 1

你可以看到我的问题在哪里：CakePHP引用我的查找条件，包括函数名 ll_to_earth 。我只需要通过模型的查询方法手动查询，或者有一种方法告诉Cake， ll_to_earth 是一个数据库函数，而不是引用它？

You can see where my problem lies: CakePHP is quoting my find conditions, including the function name ll_to_earth. Will I just need to manually query via the Model's query method, or is there a way to tell Cake that ll_to_earth is a DB function and to not quote it?

推荐答案

你应该可以这样做：

$location = $this->Location->find('first', array(
    'fields' => array(
        'id',
        'coords',
        "earth_distance(coords, ll_to_earth($latitude, $longitude)) AS distance",
    ),
    'conditions' => array(
        'coords >= ll_to_earth(' . ($latitude - 0.5) . ', ' . ($longitude - 0.5) . ') 
        and coords <= ll_to_earth(' . ($latitude + 0.5) . ', ' . ($longitude + 0.5) . ')'),
    'order' => array('distance ASC'),
));

但这也会绕过Cake对输入做的所有清理，所以你必须照顾自己。

But that will also bypass all the sanitizing that Cake is doing with the input so you will have to take care of that yourself.

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