[英]yii CDbCriteria Join Column not found
I've been struggling with converting the following SQL to CDBCriteria to be used with a CActiveDataProvider: "SELECT PresetDeviceLink. , Device. FROM PresetDeviceLink INNER JOIN Device ON Device.id = PresetDeviceLink.deviceId WHERE Device.roomId = 1" 我一直在努力将以下SQL转换为CDBCriteria以便与CActiveDataProvider一起使用:“ SELECT PresetDeviceLink。 , Device。from PresetDeviceLink INNER JOIN Device ON Device.id = PresetDeviceLink.deviceId WHERE Device.roomId = 1”
Table structure is as follows: 表结构如下:
mysql> describe PresetDeviceLink;
+----------+---------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+----------+---------+------+-----+---------+----------------+
| id | int(11) | NO | PRI | NULL | auto_increment |
| presetId | int(11) | NO | | NULL | |
| deviceId | int(11) | NO | | NULL | |
| state | int(11) | NO | | 0 | |
| value | int(11) | NO | | 32 | |
+----------+---------+------+-----+---------+----------------+
mysql> describe Device;
+-------------+--------------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+-------------+--------------+------+-----+---------+----------------+
| id | int(11) | NO | PRI | NULL | auto_increment |
| ref | int(11) | NO | | NULL | |
| roomId | int(11) | NO | | NULL | |
| typeId | int(11) | NO | | NULL | |
| paired | tinyint(1) | NO | | 0 | |
| name | varchar(255) | YES | | NULL | |
| description | text | YES | | NULL | |
| dimmerPos | int(11) | NO | | 0 | |
+-------------+--------------+------+-----+---------+----------------+
My code in my controller is as follows: 我在控制器中的代码如下:
$criteria = new CDbCriteria;
$criteria->select = 'PresetDeviceLink.*, Device.*';
$criteria->join = 'INNER JOIN Device ON Device.id = PresetDeviceLink.deviceId';
$criteria->condition = 'Device.roomId = 1';
$presetDeviceLink=new CActiveDataProvider('PresetDeviceLink', array(
'criteria' => $criteria,
));
When run I get the following error: 运行时,出现以下错误:
CDbCommand failed to execute the SQL statement: SQLSTATE[42S22]: <b>Column not
found</b>: 1054 Unknown column 'PresetDeviceLink.deviceId' in 'on clause'. The SQL
statement executed was: SELECT COUNT(*) FROM `PresetDeviceLink` `t` INNER JOIN
Device ON Device.id = PresetDeviceLink.deviceId WHERE Device.roomId = 1
The strange thing is, If I use 'Device' as the CActiveDataProvider source and change the join statement to join to 'PresetDeviceLink', it then complains that the Device.roomId column could not be found. 奇怪的是,如果我使用“设备”作为CActiveDataProvider源,并更改连接语句以连接到“ PresetDeviceLink”,则它会抱怨找不到Device.roomId列。
Do I just not understand how CActiveDataProvider works? 我只是不了解CActiveDataProvider是如何工作的? It looks to me that I can only use a condition (in a join or where clause) from a field in the table that I pass to the CActiveDataProvider.
在我看来,我只能在传递给CActiveDataProvider的表的字段中使用条件(在联接或where子句中)。 Any advice?
有什么建议吗?
PS - the SQL query works beautifully in the MySQL console. PS-SQL查询在MySQL控制台中可以很好地工作。
Thanks in advance, Ben 预先感谢,本
As is visible in the "The SQL statement executed was:" line, the first table was aliased to t
. 在“执行的SQL语句为:”行中可以看到,第一个表的别名为
t
。 This is Yii's standard behaviour. 这是Yii的标准行为。
As a result of this, you should use that alias to refer to that table instead of PresetDeviceLink
. 结果,您应该使用该别名而不是
PresetDeviceLink
来引用该表。 Or you could try setting $criteria->alias = 'PresetDeviceLink';
或者您可以尝试设置
$criteria->alias = 'PresetDeviceLink';
before using it in the CActiveDataProvider
, though I have not personally tried that option, it should work. 在
CActiveDataProvider
使用它之前,尽管我没有亲自尝试过该选项,但它应该可以工作。
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