这个问题似乎经常弹出，但没有一个答案能帮助我解决问题。

总结

• 我正在使用 Yii 创建一个应用程序；
• 我有三个表，我正在尝试对其中两个进行连接和过滤；
• 我正在尝试使用 CDbCriteria 和 CActiveDataProvider 进行连接和过滤；
• 我有所有表的模型，但是当我尝试连接它们时，出现 SQL 错误。

表格

我已经为要加入和过滤的表创建了一个模型。

记录

class Record extends CActiveRecord {
    public $owner;
    ...
    public function rules() {
        return array(
            array('given_name, family_name, dob, gender', 'required'),
            array('qr_id, site_id', 'numerical', 'integerOnly' => true),
            array('given_name, family_name, madin_name', 'length', 'max' => 100),
            array('country_of_birth, country_of_death, title', 'length', 'max' => 45),
            array('gender', 'length', 'max' => 5),
            array('dod, profile, epitaph', 'safe'),
            array('id, qr_id, given_name, family_name, madin_name, dob, dod, country_of_birth, country_of_death, gender, owner', 'safe', 'on' => 'search'),
    );
}

    ...
    public function relations() {
        return array(
            'families_left'  => array(self::HAS_MANY, 'Family', 'record_left_id'),
            'families_right' => array(self::HAS_MANY, 'Family', 'record_right_id'),
            'headstones'     => array(self::HAS_MANY, 'Headstone', 'record_id'),
            'other_names'     => array(self::HAS_MANY, 'OtherName', 'record_id'),
            'users'          => array(self::MANY_MANY, 'Users', 'record_owner(record_id, user_id)'),
            'record_owner'   => array(self::HAS_MANY, 'RecordOwner', 'record_id'),
        );
    }
    ...
}

记录所有者

class RecordOwner extends CActiveRecord {
    ...
    public function relations() {
        // NOTE: you may need to adjust the relation name and the related
        // class name for the relations automatically generated below.
        return array();
    }
    ...
}

问题

我更新了搜索，在 CDbCriteria 中添加了关于 record_owner 的条件，我在 record_owner.user_id 上添加了比较，但现在出现 SQL 错误。

搜索()

public function search() {
    // Warning: Please modify the following code to remove attributes that
    // should not be searched.

    $criteria = new CDbCriteria;

    $criteria->compare('id', $this->id);
    $criteria->compare('qr_id', $this->qr_id);
    $criteria->compare('given_name', $this->given_name, true);
    $criteria->compare('family_name', $this->family_name, true);
    $criteria->compare('madin_name', $this->madin_name, true);
    $criteria->compare('dob', $this->dob, true);
    $criteria->compare('dod', $this->dod, true);
    $criteria->compare('country_of_birth', $this->country_of_birth, true);
    $criteria->compare('country_of_death', $this->country_of_death, true);
    $criteria->compare('gender', $this->gender, true);
    $criteria->compare('title', $this->title, true);

    $criteria->with = array('record_owner');
    $criteria->compare( 'record_owner.user_id', $this->owner, true );

    return new CActiveDataProvider(
        $this,
        array(
             'criteria'   => $criteria,
             'pagination' => array(
                 'pageSize' => Yii::app()->params['pageSize'],
             )
        )
    );
}

SQL 错误

CDbCommand failed to execute the SQL statement: SQLSTATE[42S22]: Column not found: 1054 Unknown column 'record_owner.user_id' in 'where clause'. The SQL statement executed was: SELECT `t`.`id` AS `t0_c0`, `t`.`qr_id` AS `t0_c1`, `t`.`given_name` AS `t0_c2`, `t`.`family_name` AS `t0_c3`, `t`.`madin_name` AS `t0_c4`, `t`.`dob` AS `t0_c5`, `t`.`dod` AS `t0_c6`, `t`.`country_of_birth` AS `t0_c7`, `t`.`country_of_death` AS `t0_c8`, `t`.`gender` AS `t0_c9`, `t`.`profile` AS `t0_c10`, `t`.`epitaph` AS `t0_c11`, `t`.`site_id` AS `t0_c12`, `t`.`title` AS `t0_c13` FROM `record` `t` WHERE (record_owner.user_id LIKE :ycp0) ORDER BY `t`.`given_name` LIMIT 25 

问题

我应该如何进行连接和过滤？

最佳答案

添加$criteria->together = true;到 search方法。

看看这个解释:

http://www.yiiframework.com/doc/api/1.1/CDbCriteria#together-detail

特别是，

When this property is not set, if the primary table is limited or paginated, a SQL statement will be executed for each HAS_MANY relation. Otherwise, a single SQL statement will be executed for all.

由于您没有设置此值，而是使用分页，record_owner s 将通过对到达结果的单独查询获得。当然，假设查询确实完成了。

通过设置$criteria->together = true;您强制进行的查询是单个查询，这是通过执行表连接来完成的，这是您想要的，以便通过相关表中的列之一过滤您的查询。

关于php - Yii 使用 CDbCriteria 和 CActiveDataProvider 加入，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/14886682/