php - Yii - 如何从另一个模型获取数据

Question

早上好

如何从另一个模型获取数据？我有一个搜索字段，我需要在其中搜索项目名称。然后我的 Cgridview 将显示选定的项目。

我的关系里有这个

public function relations() {
        return array(
            'project' => array(self::BELONGS_TO, 'RmProjects', 'project_id'),
        );
    }

我试图在我的模型的搜索功能中访问 project_name..

public function search($employee, $search_date_start, $search_date_end, $search) {

        $criteria = new CDbCriteria;
        $criteria->with = array('eval' => array('together' => true));

        $criteria->compare('employee_id', $this->employee_id);
        $criteria->compare('remarks', $this->remarks, true);
        $criteria->compare('eval_id', $this->eval_id);

        //I tried it like this
        $criteria->addSearchCondition('project.project_name', $search);           

        if ($employee != '') {
            $criteria->compare('t.employee_id', $employee->company_id);
        }    
        return new CActiveDataProvider($this, array(
            'criteria' => $criteria,
        ));
    }

当我这样做时，出现错误。

CDbCommand failed to execute the SQL statement: SQLSTATE[42S22]: Column not found: 1054 Unknown column 'project.project_name' in 'where clause'. The SQL statement executed was: SELECT COUNT(DISTINCT t.id) FROM trx_evaluation_details t LEFT OUTER JOIN trx_evaluation eval ON (t.eval_id=eval.id) WHERE ((project.project_name LIKE :ycp0)

我的代码有什么问题？我尝试在我当前的模型中连接 RmProject 模型，以便我可以访问 project_name.. 但是，我得到了这个错误。请帮助..

这是一个编辑:

这是我的全部关系部分

 public function relations() {
        return array(
            'eval' => array(self::BELONGS_TO, 'Evaluation', 'eval_id'),
            'project' => array(self::BELONGS_TO, 'RmProjects', 'project_id'),
        );
    }

我已经在我的模型中添加了它，但它仍然不起作用。它只是改变了表格。

$criteria->with = array('project' => array('together' => true));     
$criteria->addSearchCondition('project.project_name', $search);

这是我的搜索功能。

public function search($employee, $search_date_start, $search_date_end, $search) {            
        $criteria = new CDbCriteria;
        $criteria->with = array('eval' => array('together' => true));
        $criteria->with = array('project' => array('together' => true));                       

        $criteria->compare('employee_id', $this->employee_id);
        $criteria->compare('remarks', $this->remarks, true);
        $criteria->compare('eval_id', $this->eval_id);            

        $criteria->addSearchCondition('project.project_name', $search);
        $criteria->addSearchCondition('start_date', $search_date_start, 'AND');
        $criteria->addSearchCondition('end_date', $search_date_end, 'AND');

        if ($employee != '') {
            $criteria->compare('t.employee_id', $employee->company_id);
        }    

         if ($search_date_end !== '' && $search_date_start !== '' && $search !== '') {
                $criteria->condition = "start_date  >= '$search_date_start' AND end_date <= '$search_date_end' AND project.project_name like '%$search%'AND t.employee_id = '$employee->company_id'";                
            }

        return new CActiveDataProvider($this, array(
            'criteria' => $criteria,
        ));
    }

Answer 1

您没有将模型添加到您的搜索方法

$criteria->together = true;
$criteria->with = array('eval','project');
$criteria->addSearchCondition('project.project_name', $search);

另外，通过方法的属性来设置搜索值也不是一个好的解决方案。定义新的模型公共(public)属性，定义规则并在搜索中使用它。

public $project_name;

public function attributeLabels(){
   return array(
       //... your other labels there
       'project_name' => 'Project Name',
   );
}

public function rules(){
   return array(
      //... your other rules there
      array('project_name', 'safe', 'on' => 'search'),
   );
}

public function search(){
   $criteria->compare('project.project_name', $this->project_name);
}