Question

我试图将我的gridview导出为pdf而没有运气:(。这是我控制器代码的一部分：

class LntTripsController extends Controller
{
    protected $repquery; // my only idea is to pass query parameters via global variable
    .................
    public function actionIndex()
    {
        $searchModel = new LntTripsSearch();
        $dataProvider = $searchModel->search(Yii::$app->request->queryParams);

        $this->repquery = Yii::$app->request->queryParams; // save request here
        return $this->render('index', [
            'searchModel' => $searchModel,
            'dataProvider' => $dataProvider,
        ]);
    }
.............
//Here I do export with custom template: 

    public function actionReport() {

        $searchModel = new LntTripsSearch();
        $dataProvider = $searchModel->search($this->repquery); //restore request here

        $content = $this->render('report', [
            'searchModel' => $searchModel,
            'dataProvider' => $dataProvider,
        ]);

        $pdf = Yii::$app->pdf;
        $mpdf = $pdf->api;
        $mpdf->WriteHtml($content);
        return $pdf->render();
    }
}

函数actionIndex()工作正常，但actionReport()始终打印出整个表，即使它已在actionIndex()中过滤掉。 $this->repquery中的变量NULL始终为actionReport()。

Answer 1

当你调用actionReport时，新创建了控制器，然后你丢失了你保存的queryParams ..

如果你想保存这个参数不要保存在控制器中您可以将值存储在

中

$session = Yii::$app->session;

有关会话管理的详细信息，请参阅此文档http://www.yiiframework.com/doc-2.0/yii-web-session.html

http://www.bsourcecode.com/yiiframework2/session-handling-in-yii-framework-2-0/

Answer 2

使用$this->repquery您无法获得价值，因为$this指的是当前对象您有两种方法，两种方法都有不同的对象：

$searchModel = new LntTripsSearch();

所以，你要做的就是使用$repquery代替$this->repquery。

protected $repquery;

public function actionIndex()
{
    $searchModel = new LntTripsSearch();
    $dataProvider = $searchModel->search(Yii::$app->request->queryParams);

    $repquery = Yii::$app->request->queryParams;
    return $this->render('index', [
        'searchModel' => $searchModel,
        'dataProvider' => $dataProvider,
    ]);
}

public function actionReport() 
{
    $searchModel = new LntTripsSearch();
    $dataProvider = $searchModel->search($repquery); 

    $content = $this->render('report', [
        'searchModel' => $searchModel,
        'dataProvider' => $dataProvider,
    ]);

    $pdf = Yii::$app->pdf;
    $mpdf = $pdf->api;
    $mpdf->WriteHtml($content);
    return $pdf->render();
}

Answer 3

感谢您的回答。会话就是我的解决方案。

public function actionIndex()
{
    $searchModel = new LntTripsSearch();
    $dataProvider = $searchModel->search(Yii::$app->request->queryParams);

    $session = Yii::$app->session;
    // check if a session is already open
    if (!$session->isActive){
        $session->open();// open a session
    } 
    // save query here
    $session['repquery'] = Yii::$app->request->queryParams;

    return $this->render('index', [
        'searchModel' => $searchModel,
        'dataProvider' => $dataProvider,
    ]);
}


public function actionReport() 
{

    $searchModel = new LntTripsSearch();
    // restore query using session
    $dataProvider = $searchModel->search(Yii::$app->session->get('repquery'));

    $content = $this->render('report', [
        'searchModel' => $searchModel,
        'dataProvider' => $dataProvider,
    ]);
    // create pdf
    $pdf = Yii::$app->pdf;
    $mpdf = $pdf->api;
    $mpdf->WriteHtml($content);
    return $pdf->render();
}

Yii2 gridview使用自定义模板和过滤数据导出为pdf

3 个答案: