Yii 是否可以在可标记扩展上将默认条件运算符从或更改为和？

我想检索用以下任何一项标记的记录 windows，windows7，windowsXp

默认情况下，标记生成的条件为AND-ed。我想对标记使用OR运算符。因此，如果记录包含windows、windows7但不包含windowsXp，则不会检索该记录

通过编辑扩展文件夹中etagablebehavior.php中的getFindByTagsCriteria，我找到了一个解决方法

$tagged = Os :: model()-> withTags("windows, windows7, windowsXp")-> find();

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我真的很感激不必修改插件本身的任何其他方法。

我在这里要做的是在模型中设置withTags方法以获取数组值，例如：

/**
     * Get criteria to limit query by tags.
     * @access private
     * @param array $tags
     * @return CDbCriteria
     */
    protected function getFindByTagsCriteria($tags) {
            $criteria = new CDbCriteria();

            $pk = $this->getOwner()->tableSchema->primaryKey;

            if(!empty($tags)){
                    $conn = $this->getConnection();
                    $criteria->select = 't.*';

                    if(count($tags) >0){
                            $criteria -> join .= "
                                    JOIN {$this->getTagBindingTableName()} bt 
                                    ON t.{$pk} = bt.{$this->getModelTableFkName()}

                                    JOIN {$this->tagTable} tag0 
                                    ON tag0.{$this->tagTablePk} = bt.{$this->tagBindingTableTagId} AND (";


                            for($i = 0, $count = count($tags); $i < $count; $i++){
                                    $tag = $conn->quoteValue($tags[$i]);
                                    $criteria->join .= " tag0.`{$this->tagTableName}` = $tag OR";
                            }
                            $criteria -> join = rtrim($criteria -> join, "OR");
                            $criteria -> join .= ")";
                    }
            }

            if($this->getScopeCriteria()){
                    $criteria->mergeWith($this->getScopeCriteria());
            }

            return $criteria;
    }

这样，您应该能够像这样调用命名范围：

/**
 * @param array $tags List of tags to search for
 * @return named scope
 */
public function withTags($tags)
{
    $condition = '1';
    $params = array();
    foreach($tags as $key=>$value)
    {
        $condition.=' OR tag = :tag'.$key;
        $params[':tag'.$key] = $value;
    }
    $this->getDbCriteria()->mergeWith(array(
        'condition'=>$condition,
        'params'=>$params,
    ));

    return $this;
}

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Yii开发团队的Sam通过向etagableBehavior.php添加另外两个函数帮助我解决了这个问题

---

我已经更新了我的问题。以与您的回答类似的方式，我修改了插件的主文件。问题是我不知道它会引起什么副作用。它从联接中生成查询，而不是通过WHERE condition或/和condition搜索标记。请看一看，您可能能够从第511行的join语句末尾删除`and tag$i.{$this->tagTableName}=$tag`，并将其放入自己的`condition'语句中，使用and或代替and？可能需要再做一些修补吗？

$tags = array('windows', 'windows7', 'windowsXp'),
$tagged = Os::model()->withTags($tags)->findAll();

/**
 * Get criteria to limit query to match any of tags specified
 * @access private
 * @param array $tags
 * @return CDbCriteria
 */
protected function getFindByAnyTagsCriteria($tags) {
    $criteria = new CDbCriteria();

    $pk = $this->getOwner()->tableSchema->primaryKey;

    if(!empty($tags)){
        $conn = $this->getConnection();
        foreach($tags as &$tag) {
            $tag = $conn->quoteValue($tag);
        }
        unset($tag);
        $tags = implode(', ', $tags);

        $criteria->select = 't.*';
        $criteria->join .=
            "JOIN {$this->getTagBindingTableName()} bt ON t.{$pk} = bt.{$this->getModelTableFkName()}
            JOIN {$this->tagTable} tag ON tag.{$this->tagTablePk} = bt.{$this->tagBindingTableTagId} AND tag.`{$this->tagTableName}` IN ($tags)";
        }
    }

    if($this->getScopeCriteria()){
        $criteria->mergeWith($this->getScopeCriteria());
    }

    return $criteria;
}

/**
 * Limit current AR query to have any of tags specified.
 * @param string|array $tags
 * @return CActiveRecord
 */
public function taggedWithAnyOf($tags) {
    $tags = $this->toTagsArray($tags);

    if(!empty($tags)){
        $criteria = $this->getFindByAnyTagsCriteria($tags);
        $this->getOwner()->getDbCriteria()->mergeWith($criteria);
    }

    return $this->getOwner();
}