使用symfony中的斑点图像的图片库

Question

我的图像列表中的数据库表中有斑点。

我想要做的是在listSuccess.php中显示图像，就像一个画廊。

有人可以提供一些代码，帮助或让我开始？

Regards

Answer 1

首先，如果你存储在DB数据不将其存储在一个事务所表。 这里我举的例子：

的schema.yml

File: 
    connection: doctrine 
    actAs: { Timestampable: ~ } 
    columns: 
    document_id: { type: integer(5), notnull: true} 
    name: string(255) 
    size: integer(11) 
    mime: string(255) 
    relations: 
    Document: 
     class: Document 
     local: document_id 
     foreign: id 
     type: one 
     onDelete: CASCADE 
    FileData: 
     local: id 
     foreign: file_id 
     type: one 
     foreignType: one 


FileData: 
    connection: doctrine 
    columns: 
    file_id: { type: integer(6), notnull: true } 
    binary_data: { type: LONGBLOB, notnull: true } 
    relations: 
    File: { onDelete: CASCADE, local: file_id, foreign: id, foreignType: one } 

前端/模块/文件/动作/的actions.class.php

<?php 

class fileActions extends sfActions 
{ 

    public function executeDownload(sfWebRequest $request) 
    { 
    $response = $this->getResponse(); 


    /** @var $file File */ 
    $file = $this->getRoute()->getObject(); 
    $this->forward404Unless($file->getDocument()->isApprovedAndShared($this->getUser())); 
    $fsize = $file->getSize(); 

    $response->setContentType($file->getMime()); 
    $response->setHttpHeader('Content-Length',$fsize); 
    $response->setHttpHeader('Content-Disposition','filename='.$file->getName()); 
    $response->setHttpHeader('Content-transfer-encoding','binary'); 

    $response->setContent($file->getFileData()->getBinaryData()); 

    return sfView::NONE; 
    } 

    public function executeAddFile(sfWebRequest $request) 
    { 
    $this->forward404Unless($request->isMethod(sfRequest::POST)); 

    /** @var $document Document */ 
    $document = $this->getRoute()->getObject(); 
    $this->forward404Unless($document->getOffice()->getId() == $this->getUser()->getGuardUser()->getOfficeId(), $this->getContext()->getI18N()->__('textAccessForbidden')); 

    $form = new FileForm(); 

    $files = $request->getFiles($form->getName()); 
    $file_name = $files['file']['name']; 
    $file_already_exist = FileTable::getInstance()->getFile($document->getId(), $file_name); 

    if ($file_already_exist) { 
     $form = new FileForm($file_already_exist); 
     $form->bind($request->getParameter($form->getName()), $request->getFiles($form->getName())); 
//  $form->getObject()->setCreatedAt(date("Y-m-d H:i:s", time())); 
     $form->getObject()->setUpdatedAt(date("Y-m-d H:i:s", time())); 
    } 
    else { 
     $form = new FileForm(); 
     $form->bind($request->getParameter($form->getName()), $request->getFiles($form->getName())); 
    } 

    if ($form->isValid()) 
    { 
     $form->getObject()->setDocumentId($document->getId()); 
     $file_result = $form->save(); 

     if ($file_already_exist) 
     $this->getUser()->setFlash('notice', $this->getContext()->getI18N()->__("textFileReplacedOk", array('%s%'=>$file_result->getName()))); 
     else 
     $this->getUser()->setFlash('notice', $this->getContext()->getI18N()->__("textFileUploadOk", array('%s%'=>$file_result->getName()))); 

     $this->redirect($this->generateUrl("document_edit",$document)); 
    } 

    $this->getUser()->setFlash('error', $this->getContext()->getI18N()->__("textFileUploadError")); 
    $this->forward("document","edit"); 

    } 


    public function executeDelete(sfWebRequest $request) 
    { 
    /** @var $file File */ 
    $file = $this->getRoute()->getObject(); 

    $this->forward404Unless($request->getParameter('document_id') == $file->getDocumentId() , sprintf('The object doesn\'t belong to the document (file: %s).', $request->getParameter('id'))); 
    $this->forward404Unless($file = FileTable::getInstance()->find(array($file->getId())), sprintf('Object file does not exist (%s).', $request->getParameter('id'))); 
    $file->delete(); 

    $this->getUser()->setFlash('notice', sprintf($this->getContext()->getI18N()->__("textFileDeletedOk"),$file->getName())); 

    $this->redirect($this->generateUrl("document_edit",DocumentTable::getInstance()->find(array($file->getDocumentId())))); 
    } 

} 

FileDataForm.class.php

class FileDataForm extends BaseFileDataForm 
{ 
    public function configure() 
    { 
    unset(
     $this['file_id'] 
    );   
    } 
} 

FileForm.class.php

class FileForm extends BaseFileForm 
{ 
    public function configure() 
    { 
    $this->disableCSRFProtection(); 
    $this->useFields(array()); 
    $this->widgetSchema['file'] = new sfWidgetFormInputFile(array()); 

    $this->setValidator('file', new sfValidatorFile(array(
    'max_size' => 1024*1024*sfConfig::get("app_max_file_size", 10) //MB 
    ))); 


    } 

    public function save($con = null) 
    { 

    /** @var $validated_file 
    var_dump($validated_file) */ 
    $validated_file = $this->getValue('file'); 

    /** @var $file File */ 
    $file = $this->getObject(); 
    $file->setMime($validated_file->getType()); 
    $file->setName($validated_file->getOriginalName()); 
    $file->setSize($validated_file->getSize()); 

    $fileData = new FileData(); 

    $fd = @fopen($validated_file->getTempName(), 'rb'); 

    $fileData->setBinaryData(fread($fd,$validated_file->getSize())); 

    fclose($fd); 

    $file->setFileData($fileData); 
    unset($this['file']); //do not save Validated file: this is a trick :) 

    return parent::save($con); 
    } 
} 

Answer 2

在您的列表操作中，获取相应图像对象的集合。在模板中，为每个标签生成一个<img>标签，指向另一个操作，它从数据库中提取图像本身，然后在设置适当的http标头后输出它。

您将图像存储在数据库中的任何特定原因？将它们存储在磁盘之外的某个地方会更有效率，因此您仍然可以访问控制。

更新

一个基本的例子如下。我只是在这里输入它，所以可能包含错误。所有的

//actions.class.php 
public function executeIndex(sfWebRequest $request) { 
    //get the images belonging to the current gallery 
    $this->images = Doctrine_Core::getTable("Image")->retrieveByGalleryId($request->getParameter("id")); 
} 

//indexSuccess.php 
<?php foreach ($images as $image): ?> 
    <img src="<?php echo url_for("image_show", $image) ?>" alt="<?php echo $image->title ?>" /> 
<?php endforeach> 

//actions.class.php again 
public function executeShow(sfWebRequest $request) { 
    $image = $this->getRoute()->getObject(); 
    $this->getResponse()->clearHttpHeaders(); 
    $this->getResponse()->setContentType($image->mime_type); 
    $this->getResponse()->setHttpHeader('Content-Disposition', 'attachment; filename=' . $image->file_name); 
    $this->getResponse()->setHttpHeader('Content-length', $image->file_size); 
    readfile($image->file_name); 
    return sfView::NONE; 
} 

Answer 3

$profile_picture = base64_encode(stream_get_contents($image->getContent())); 
echo '<img src="data:image/jpeg;base64,'.$profile_picture.'" />';