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January 3, 2016 11:49
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Radius Search in Yii. Include WhereBehavior and RadiusSearchBehavior in your model in order to search byPointRadius or insideBounds.
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| <?php | |
| class RadiusSearchBehavior extends CActiveRecordBehavior | |
| { | |
| public function byPointRadius($lat, $lng, $radius) | |
| { | |
| $radius = (float)$radius; | |
| $distance = "((ACOS(SIN(:lat * PI() / 180) * SIN(lat * PI() / 180) + COS(:lat * PI() / 180) * COS(lat * PI() / 180) * COS((:lng - lng) * PI() / 180)) * 180 / PI()) * 60 * 1.1515)"; | |
| $condition = "lat BETWEEN " . ($lat - $radius / 69.2) . " AND " . ($lat + $radius / 69.2) . " AND lng BETWEEN " . ($lng - $radius / 69.2) . " AND " . ($lng + $radius / 69.2) . " AND $distance<=:radius"; | |
| return $this->owner->where($condition, array('lat' => $lat, 'lng' => $lng, 'radius' => $radius)); | |
| } | |
| public function insideBounds($nex, $ney, $swx, $swy) | |
| { | |
| return $this->owner->where('lat<=:nex AND lat>=:swx AND lng<=:ney AND lng>=:swy', array('nex' => $nex, 'ney' => $ney, 'swx' => $swx, 'swy' => $swy)); | |
| } | |
| } |
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| <?php | |
| class WhereBehavior extends CActiveRecordBehavior | |
| { | |
| /** | |
| * Examples: | |
| * User::model()->where("user_id=5"); | |
| * User::model()->where("user_id", 5); | |
| * User::model()->where("user_id", ">", 5); | |
| * User::model()->where("first_name=:token OR last_name=:token", array('token' => "Furber")); | |
| * @param mixed $col | |
| * @param mixed $op | |
| * @param mixed $val | |
| */ | |
| public function where($col, $op = null, $val = null) | |
| { | |
| if (!$op && !$val) | |
| $this->owner->getDbCriteria()->addCondition($col); | |
| else if ($op && !$val) | |
| if (is_array($op)) | |
| $this->owner->getDbCriteria()->mergeWith(array( | |
| 'condition' => $col, | |
| 'params' => $op, | |
| )); | |
| else | |
| $this->owner->getDbCriteria()->compare($col, $op); | |
| else | |
| $this->owner->getDbCriteria()->compare($col, $op . $val); | |
| return $this->owner; | |
| } | |
| } |
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