str_pad在Mysql字段中不使用Yii2

Question

我在Yii2控制器中有以下创建操作：

public function actionCreate2()
    {
      $searchModel = new BibliografieSearch();
      $searchModel = new CodiciSearch();
      $dataProvider = $searchModel->search(Yii::$app->request->queryParams);    

        $model = new Elenchi();  
        $model->Modified = date( 'y-m-d' );
        
        
        if ($model->FogliDaO) {
            $model->FogliDaO = str_pad($model->FogliDaO, 8, "0", STR_PAD_LEFT);
        }

        if ($model->load(Yii::$app->request->post()) && $model->save()) {
            
            return $this->redirect(['index', 'sort' => '-IDElenco']);
        }

        return $this->render('create2', [
            'model' => $model,
            'dataProvider' => $dataProvider,
            'searchModel' => $searchModel


        ]);
    }

现在，如果我在字段中写入"28v“(FogliDaO)并保存新记录，Mysql数据库中的结果总是"28v"，而不是"0000028v”。我哪里错了？(FogliDaO是VARCHAR)。我需要帮助。非常感谢！

Answer 1

如果要更改$model的内容，则必须在load()之后和save()函数之前分配填充值。否则，您将覆盖该辅助项。

public function actionCreate2()
{
  $searchModel = new BibliografieSearch();
  $searchModel = new CodiciSearch();
  $dataProvider = $searchModel->search(Yii::$app->request->queryParams);    

    $model = new Elenchi();  
    
    

    if ($model->load(Yii::$app->request->post()) ) {
        $model->Modified = date( 'y-m-d' );
        
        if ($model->FogliDaO) {
            $model->FogliDaO = str_pad($model->FogliDaO, 8, "0", STR_PAD_LEFT);
        }
        $model->save();
        return $this->redirect(['index', 'sort' => '-IDElenco']);
    }

    return $this->render('create2', [
        'model' => $model,
        'dataProvider' => $dataProvider,
        'searchModel' => $searchModel


    ]);
}

$ model ->load()函数将对应的模型数据从$_POST复制到实际(新)模型。因此，如果在load()函数之前分配填充值，则此值将丢失，因为load用$_POST内容覆盖此值