以symfony显示存储在BLOB数据库中的图像 [英] Display image stored in BLOB database in symfony

问题描述

我将图像(blob数据)加载到我的GETer实体中 当我刚刚在我的GETer中返回($ this-> foto)时，我在屏幕上看到:Resource id#284 当我像这样更改我的GETer时:return stream_get_contents($ this-> foto); 我看到了这些: ?JFIF ??(,,,,,,,(和更多)

I load my image (blob data ) in my GETer Entity When I just return ($this->foto) in my GETer I see :Resource id #284 on the screen When I change my GETer like this : return stream_get_contents($this->foto); I see these : ���JFIF��� ( ,,,,,,,, ( and more )

在我的控制器中，调用index.html.twig以显示我的所有实体

In my Controller a call the index.html.twig to show all my entities

    /**
 * Lists all Producten entities.
 *
 */
public function indexAction()
{
    $em = $this->getDoctrine()->getManager();

    $entities = $em->getRepository('CustomCMSBundle:Producten')->findAll();

    return $this->render('CustomCMSBundle:Producten:index.html.twig', array(
        'entities' => $entities,
    ));
}

现在在我的视图(index.html.twig)中，我想显示图片

Now in my views ( index.html.twig ) I like to show the picture

       {% for entity in entities %}
        <tr>
            <td>
                <img  src="{{ entity.foto}}" alt="" width="80" height="80" />
            </td>
            <td>
                {{ entity.foto }}
            </td>
            <td>
            <ul>
                <li>
                    <a href="{{ path('cms_producten_show', { 'id': entity.id }) }}">show</a>
                </li>
                <li>
                    <a href="{{ path('cms_producten_edit', { 'id': entity.id }) }}">edit</a>
                </li>
            </ul>
            </td>
        </tr>
    {% endfor %}

但是我看不到图片吗?

有人可以帮助我吗?

推荐答案

您使用的是<img src="(raw image)">而不是<img src="(image's url)">

一种快速的解决方案是在base64中编码图像并将其嵌入.

A quick solution is to encode your image in base64 and embed it.

控制器

$images = array();
foreach ($entities as $key => $entity) {
  $images[$key] = base64_encode(stream_get_contents($entity->getFoto()));
}

// ...

return $this->render('CustomCMSBundle:Producten:index.html.twig', array(
    'entities' => $entities,
    'images' => $images,
));

查看

{% for key, entity in entities %}
  {# ... #}
  <img alt="Embedded Image" src="data:image/png;base64,{{ images[key] }}" />
  {# ... #}
{% endfor %}

这篇关于以symfony显示存储在BLOB数据库中的图像的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！