echoing variable gets "Resource id" - symfony

Question

Using symfony2 I load some entities and then try to iterate over them in a twig template.
However, instead of the variable content I am getting the following:
Resource id #23
My twig template looks like this:
<ol>
{% for post in posts %}
<li>
<div>
{{ post.content }}
</div>
</li>
{% endfor %}
</ol>
My controller code is:
$repository = $this->getDoctrine()
->getRepository('AppPostBundle:Post');
$reviews = $repository->findBy(
array('title' => 'my title'))
;

Answer 1

Maybe is too late for this answer (definitely it is LOL) but I recently had the same issue and the problem is that blob datatypes are treated as a buffer, so you have to read the info using buffer functions.
In your entity Post code you may add this method:
public function readContent(){
$content = '';
while(!feof($this->getContent())){
$content.= fread($this->getContent(), 1024);
}
rewind($this->getContent());
return $content;
}
Then in your views you may call the readcontent method instead of content:
<ol>
{% for post in posts %}
<li>
<div>
{{ post.readcontent }}
</div>
</li>
{% endfor %}
</ol>
Is better late than never :)

Answer 2

My entity name is : 'Test'
Blob type field is : 'Details'
in '/src/Vendorname/Bundlename/Entity/entityname.php'
**
* Get details
*
* #return string
*/
public function getDetails()
{
return $this->details;
}
/**
* Reading the blob type of content.
* #return data
*/
public function readDetails(){
$details = '';
while(!feof($this->getDetails())){
$details.= fread($this->getDetails(), 1024);
}
rewind($this->getDetails());
return $details;
}
and in '*.html.twig' file
{% for match in matches %}
{{match.readdetails}}
{%endfor%}