Yii在GridView中显示每个记录

在我的GridView中，我想显示表"reply"的所有记录。该表与表"author"answers"task"有关系，并且不是每个回复都有一个任务。表"task"与另一个名为"concern"的表有关系。

以下是我的模型的关系（）回复：

public function relations() {
    return array(
        'trak' => array(self::HAS_MANY, 'Task', 'reply_id', 'condition' => 'task.deleted<>1'),
        'author' => array(self::BELONGS_TO, 'Author', 'author_id'),
        );
}

我的模型Reply的search（）方法有以下代码：

public function search() {
    $criteria = new CDbCriteria;
    $criteria->with = array(
        'author' => array('select' => 'id, name, role, office_id, abk', 'together' => false),
        'author.office' => array('select' => 'id, name'),
        'task' => array('select' => 'id, concern_id', 'together' => true),
        'task.concern' => array('select' => 'id, classification_id', 'alias' => 'concern'),
    );
    $criteria->compare('t.id', $this->id);
    $criteria->compare('t.create_time', $this->create_time);
    $criteria->compare('t.create_date', $this->create_date, true);
    $criteria->compare('t.office.id', $this->search_office);
    $criteria->compare('t.author_id', $this->author_id);
    $criteria->compare('t.rel', $this->rel, true);
    $criteria->compare('t.author_id', $this->author_id);
    $criteria->compare('t.lektor_id', $this->lektor_id);
    $criteria->compare('t.issue_id', $this->issue_id);
    $criteria->compare('t.reply_text', $this->reply_text, true);
    $criteria->compare('t.deleted', $this->deleted);
    if (EWMParam::getValue(EWMParam::MODUL_SCHLAGWORTE))
        $criteria->compare('t.tags', $this->tags, true);
    $criteria->compare('t.text_name', $this->text_name, true);
    $criteria->compare('t.use_count', $this->use_count);
    $criteria->compare('concern.classification_id', $this->classification_id);
    $criteria->compare('t.update_time', $this->update_time);
    $criteria->compare('t.update_user', $this->update_user);
    $criteria->compare('t.global', $this->global);
    if (EWMParam::getValue(EWMParam::MODUL_confirmationN))
        $criteria->compare('t.confirmation', $this->confirmation);
    $criteria->compare('t.confirmation_text', $this->confirmation_text, true);
    $criteria->compare('t.use', $this->use, true);

    $pagination = EWMPageSortFilterHelper::getPagination($this);
    $sort = new CSort();
    $sort->defaultOrder = 't.id DESC';
    $sort->attributes = array(
        'global' => 't.global',
        'search_office' => 'office.name',
        'id' => 't.id',
        'text_name' => 't.text_name',
        'confirmation' => 't.confirmation',
        'author_id' => 'author.name',
        'create_date' => 't.create_date',
        'tags' => 't.tags',
        'use' => 't.use',
        'classification_id' => 'classification_id',
    );
    $sort->applyOrder($criteria);
    return new CActiveDataProvider($this, array(
        'criteria' => $criteria,
        'pagination' => $pagination,
        'sort' => $sort
    ));
}

在我的GridVew中，只显示带有任务的回复，并且所有过滤器都能正常工作。但我想显示所有有任务的回复和所有没有任务的回复。如果我在$criteria->数组中的search（）方法中删除元素为"task"answers"task.consent"的所有reply。但是该行的筛选器来自关系"task.correct"的"Classifcation"不起作用。从逻辑上讲，我得到了错误"找不到列：1054"where子句"中的未知列"concern.classification_id"。

是否可以显示所有回复并按分类筛选这些回复？你有主意吗？