Saving files to a blob field in the database Follow @yiiframework

class Candidate extends CActiveRecord
{
    /**
     * Property for receiving the file from the form
     * It should be different from any other field in the database
     */
    public $uploadedFile;
 
    public function rules()
    {
        return array(
            array('uploadedFile', 'file', 'types'=>'jpg, gif, png'),
        );
    }
 
 
    /**
    * Saves the name, size, type and data of the uploaded file
    */
    public function beforeSave()
    {
        if($file=CUploadedFile::getInstance($this,'uploadedFile'))
        {
            $this->file_name=$file->name;
            $this->file_type=$file->type;
            $this->file_size=$file->size;
            $this->file_content=file_get_contents($file->tempName);
        }
 
    return parent::beforeSave();
    }
}

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

<? echo CHtml::link(my_link_name,array('displaySavedImage','id'=>$model->primaryKey)); ?>

/**
 * Opens the dialog in browser to open/save the image.
 */
public function actionDisplaySavedImage()
{
    $model=$this->loadModel($_GET['id']);
 
    header('Pragma: public');
    header('Expires: 0');
    header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
    header('Content-Transfer-Encoding: binary');
    header('Content-length: '.$model->file_size);
    header('Content-Type: '.$model->file_type);
    header('Content-Disposition: attachment; filename='.$model->file_name);
 
        echo $model->file_content;
}