Yii上传图片

时间:2012-07-26 14:32:09

标签: yii

我是yii的新手,所以我跟着这个tutorial

当我尝试上传图片时,它会报告空字段,即使它不是。

我的_form视图:

<div class="form">

<?php $form=$this->beginWidget('CActiveForm', array(
    'id'=>'picture-form',
    'enableAjaxValidation'=>false,
    'htmlOptions' => array('enctype' => 'multipart/form-data'),
     )); 
?>
...
<div class="row">
  <?php echo $form->labelEx($model,'path_to'); ?>
  <?php echo $form->fileField($model,'path_to'); ?>
  <?php echo $form->error($model,'path_to'); ?>
</div>
...
  <?php $this->endWidget(); ?>
</div><!-- form -->

这是我的行动方法:

public function actionCreate()
{
  $model=new Picture;
  if(isset($_POST['Picture']))
  {
    $model->attributes=$_POST['Picture'];

    $model->picture=CUploadedFile::getInstance($model,'path_to');
    if($model->save()){
      $log->lwrite('in save'.$model->picture);
      $model->picture->saveAs(Yii::app()->basePath.'/../images/'.$model->picture);
      $this->redirect(array('view','id'=>$model->id));
      $log->lclose();
    }
  }
$this->render('create',array('model'=>$model,));
}

当我print_r($ _ FILES)那里应该有的东西 当我print_r($ _ POST)时,字段'path_to'为空,验证器可能正在挑选那个。

我可能在这里遗漏了一些东西而且我一无所知。

UPDATE1: 我注意到yii正在使用与文件输入同名的隐藏字段,而不是从$ _POST读取属性,这导致引擎读取空隐藏字段。 据我所知,当用户没有输入新图片时,隐藏字段可供更新。 任何人都可以建议什么是上传图片的最佳方式?

UPDATE2: 型号代码:     class Picture扩展了CActiveRecord     {

    public $picture;
... 
    public function rules()
    {
        // NOTE: you should only define rules for those attributes that
        // will receive user inputs.
        return array(
            array('path_to, page_id', 'required'),
            array('page_id', 'numerical', 'integerOnly'=>true),
            array('alt_text', 'safe'),
            // The following rule is used by search().
            // Please remove those attributes that should not be searched.
            array('id, alt_text, path_to, page_id', 'safe', 'on'=>'search'),
            //array('path_to', 'file','types'=>'jpg, gif, png', 'allowEmpty'=>true, 'on'=>'update'),
            //array('path_to', 'length', 'max'=>255, 'on'=>'insert,update'),
            array('path_to', 'unsafe'),
        );
    }
...

最佳!

2 个答案:

答案 0 :(得分:3)

我认为,因为你已经宣布'path_to'在你的规则中是不安全的,大量的分配线:

$model->attributes=$_POST['Picture'];

将失败,这将导致规则验证失败。更改规则以允许path_to安全,你应该好好去。 。 。

您似乎还需要一个page_id,我在您的表单中没有看到。

答案 1 :(得分:1)

_form file for file upload字段:

<?php $form=$this->beginWidget('CActiveForm', array(
    'id'=>'post-form',
    'enableAjaxValidation'=>false,
    'htmlOptions' => array('enctype' => 'multipart/form-data'),
)); ?>


        <div class="row">
        <?php echo $form->labelEx($model, 'image');?>
        <?php echo $form->fileField($model, 'image'); ?>
        <?php echo $form->error($model, 'image'); ?>
    </div>

<?php $this->endWidget(); ?>

控制器代码:

public function actionCreate()
    {
        $model=new Post;

        if(isset($_POST['Post']))
        {
            $model->attributes=$_POST['Post'];
                        $uploadedFile=CUploadedFile::getInstance($model,'image');
                        $fileName = $uploadedFile;
                        $model->image = $fileName;

            if($model->save()){
         $uploadedFile->saveAs('C:/Program Files/Apache Group/Apache2/htdocs'.Yii::app()->baseUrl.'/images/thumbnails/'.$fileName);
                $this->redirect(array('view','id'=>$model->id)); 
                        }
        }

        $this->render('create',array(
            'model'=>$model,
        ));
    }

diplay视图代码:

<?php $this->widget('zii.widgets.grid.CGridView', array(
    'dataProvider'=>$model->search(),
    'ajaxUpdate' => false,
    'columns'=>array(
        array(
            'name'=>'Thumbnail',
            'value'=>array($model,'showThumbnail'), // function in model 
            'type'=>'html',            
            'htmlOptions'=>array('class'=>'thumbnail'),
        ),

    )
));
?>

型号代码:

place this function in ur model :

public function showThumbnail($data){
    $path = $data->image;
 return CHtml::image(Yii::app()->baseUrl.'/images/thumbnails/'.$path); // same path as ur uploaded file path
}