ホームページ >バックエンド開発 >PHPチュートリアル >使用YII做后台,使用Yii的AR达不到要求的效果。很急,我该怎么办?
我使用YII作为PHP框架。其中有一个功能是查询附近的人。
我的代码是这样做的:
<code class="lang-php">class NearByController extends Controller { //发现附近的人。这里还没有做筛选。distance在哪里? public function actionIndex() { $latitude= UserRefreshForm::model()->getLatitude(); $longitude=UserRefreshForm::model()->getLongitude(); $criteria=new CDbCriteria(); $nearPersons=MGetNear::getNearPersonsNoOrder(); $criteria->select=' t.*, (ACOS(SIN(('.$latitude.'* 3.1415) / 180 ) *SIN((tbl_myr_refresh.latitude * 3.1415) / 180 ) +COS(('.$latitude.'* 3.1415) / 180 ) * COS((tbl_myr_refresh.latitude * 3.1415) / 180 ) *COS(('.$longitude .'* 3.1415) / 180 - (tbl_myr_refresh.longitude * 3.1415) / 180 ) ) * 6378.137) as distance'; $criteria->join='LEFT JOIN tbl_myr_refresh ON tbl_myr_refresh.userId=t.userId'; $criteria->addInCondition('t.userId',$nearPersons); $criteria->order='distance ASC'; $UserModel=User::model(); $total=$UserModel->count($criteria); $pager=new CPagination($total); $pager->pageSize=10; $pager->applyLimit($criteria); $userList=$UserModel->findAll($criteria); p($userList); } </code>
我是使用Mysql来计算距离的。
但是当我打印出来的时候发现没有distance这个属性:
<code class="lang-php">Array ( [0] => User Object ( [password1] => [password2] => [geohash] => [_new:CActiveRecord:private] => [_attributes:CActiveRecord:private] => Array ( [userId] => 3 [username] => [password] => c3284d0f94606de1fd2af172aba15bf3 [email] => 741691740@qq.com [phoneNumber] => [birthday] => 1992-11-01 [gender] => 1 [homeland] => 四川南充 [wantWhere] => [registerDate] => 2014-06-27 [smallAvatar] => smallAvatar140385273350016.jpg [bigAvatar] => bigAvatar140385273350016.jpg [qrcode] => [isStudent] => 1 [wentWhere] => [md5] => f2300adcae381de30ae58c8f4309dda9 [sessionId] => o5fcapmo7clfiiua717n1aa525 [iemi] => 123456789 ) [_related:CActiveRecord:private] => Array ( ) [_c:CActiveRecord:private] => [_pk:CActiveRecord:private] => 3 [_alias:CActiveRecord:private] => t [_errors:CModel:private] => Array ( ) [_validators:CModel:private] => [_scenario:CModel:private] => update [_e:CComponent:private] => [_m:CComponent:private] => ) ) </code>
也就是Yii只把user表中有的打印出来了。但是distance这个属性没有打印出来!
求救。YII大神告诉我该如何获得这个distance属性?
我使用YII作为PHP框架。其中有一个功能是查询附近的人。
我的代码是这样做的:
<code class="lang-php">class NearByController extends Controller { //发现附近的人。这里还没有做筛选。distance在哪里? public function actionIndex() { $latitude= UserRefreshForm::model()->getLatitude(); $longitude=UserRefreshForm::model()->getLongitude(); $criteria=new CDbCriteria(); $nearPersons=MGetNear::getNearPersonsNoOrder(); $criteria->select=' t.*, (ACOS(SIN(('.$latitude.'* 3.1415) / 180 ) *SIN((tbl_myr_refresh.latitude * 3.1415) / 180 ) +COS(('.$latitude.'* 3.1415) / 180 ) * COS((tbl_myr_refresh.latitude * 3.1415) / 180 ) *COS(('.$longitude .'* 3.1415) / 180 - (tbl_myr_refresh.longitude * 3.1415) / 180 ) ) * 6378.137) as distance'; $criteria->join='LEFT JOIN tbl_myr_refresh ON tbl_myr_refresh.userId=t.userId'; $criteria->addInCondition('t.userId',$nearPersons); $criteria->order='distance ASC'; $UserModel=User::model(); $total=$UserModel->count($criteria); $pager=new CPagination($total); $pager->pageSize=10; $pager->applyLimit($criteria); $userList=$UserModel->findAll($criteria); p($userList); } </code>
我是使用Mysql来计算距离的。
但是当我打印出来的时候发现没有distance这个属性:
<code class="lang-php">Array ( [0] => User Object ( [password1] => [password2] => [geohash] => [_new:CActiveRecord:private] => [_attributes:CActiveRecord:private] => Array ( [userId] => 3 [username] => [password] => c3284d0f94606de1fd2af172aba15bf3 [email] => 741691740@qq.com [phoneNumber] => [birthday] => 1992-11-01 [gender] => 1 [homeland] => 四川南充 [wantWhere] => [registerDate] => 2014-06-27 [smallAvatar] => smallAvatar140385273350016.jpg [bigAvatar] => bigAvatar140385273350016.jpg [qrcode] => [isStudent] => 1 [wentWhere] => [md5] => f2300adcae381de30ae58c8f4309dda9 [sessionId] => o5fcapmo7clfiiua717n1aa525 [iemi] => 123456789 ) [_related:CActiveRecord:private] => Array ( ) [_c:CActiveRecord:private] => [_pk:CActiveRecord:private] => 3 [_alias:CActiveRecord:private] => t [_errors:CModel:private] => Array ( ) [_validators:CModel:private] => [_scenario:CModel:private] => update [_e:CComponent:private] => [_m:CComponent:private] => ) ) </code>
也就是Yii只把user表中有的打印出来了。但是distance这个属性没有打印出来!
求救。YII大神告诉我该如何获得这个distance属性?
(ACOS(SIN(('.$latitude.'* 3.1415) / 180 ) *SIN((tbl_myr_refresh.latitude * 3.1415) / 180 ) +COS(('.$latitude.'* 3.1415) / 180 ) * COS((tbl_myr_refresh.latitude * 3.1415) / 180 ) *COS(('.$longitude .'* 3.1415) / 180 - (tbl_myr_refresh.longitude * 3.1415) / 180 ) ) * 6378.137) as distance
别名必须是该表中已经有的字段拿来借用一下,否则的话是row对象中获取不到这个值