twig, how to convert array in the object to string?

[gintare]

Related files:

myproject\src\B log\ModelBundle \Entity\Post.ph p

class Post{
	private $id;
	private $title;
	private $slug;
	private $body;
	private $author;
	private $comments;

    public function getId()
    {
        return $this->id;
    }
    
    public function setTitle($title)
    {
        $this->title = $title;

        return $this;
    }
    
    public function getTitle()
    {
        return $this->title;
    }
    
    public function setBody($body)
    {
        $this->body = $body;

        return $this;
    } 
    
    public function getBody()
    {
        return $this->body;
    }
    
    public function setAuthor(\Blog\ModelBundle\Entity\Author $author)
    {
        $this->author = $author;

        return $this;
    }
    
    public function getAuthor()
    {
        return $this->author;
    }
    
    public function setSlug($slug)
    {
        $this->slug = $slug;

        return $this;
    }
    
    public function getSlug()
    {
        return $this->slug;
    }
    
    public function __construct()
    {
        $this->comments = new \Doctrine\Common\Collections\ArrayCollection();
    }
    
    public function addComment(\Blog\ModelBundle\Entity\Comment $comments)
    {
        $this->comments[] = $comments;

        return $this;
    }   
    
    public function removeComment(\Blog\ModelBundle\Entity\Comment $comments)
    {
        $this->comments->removeElement($comments);
    }
    
    public function getComments()
    {
        return $this->comments;
    }    
    
    public function toString()
    {
        $str = implode('|',$this->comments);
        return $str;
    } 
}

myproject\src\B log\ModelBundle \Entity\Author. php

class Author {
...
private $name;
...
    public function toString()
    {
        return $this->name;
    } 
}

myproject\src\B log\ModelBundle \Entity\Comment .php

class Comment {
...
private $body;
    public function getBody()
    {
        return $this->body;
    }
}

myproject\src\B log\AdminBundle \Resources\view s\Post\index.ht ml.twig

{% block section %}
    <h1>Post list</h1>

    <table class="records_list">
        <thead>
        <tr>
            <th>Title</th>
            <th>Author</th>
            <th>Comments</th>
        </tr>
        </thead>
        <tbody>
        {% for entity in entities %}
            <tr>
                <td>{{ entity.title  }}</td>
                <td>{{ entity.author  }}</td>
                
                <td>

 <table class="comments_list">
	{% for item in  entity.comments %}
       <tr>
          <td>  {{ item.body }}</td>
          <td><a href="{{ path('blog_admin_comment_show', { 'id': item.id }) }}">show</a></td>
       </tr>
   {% endfor %}
</table>
                 </td>              
        {% endfor %}
        </tbody>
    </table>
{% endblock %}

I have Post entity in Symfony projetc and would like to display it in index.html.twig .

I do not understand how to display Post object variables in twig template.

I am getting error "Twig_Error_Run time: An exception has been thrown during the rendering of a template ("Catchable Fatal Error: Object of class Proxies\__CG__\ Blog\ModelBundl e\Entity\Author could not be converted to string") in src/Blog/AdminBundle/Resources/views/Post/index.html.twig at line 36."



Question is how to display Post object variables in twig template?
Thank you a lot!

[gintare]

One of solutions seems to be

http://twig.sensiolabs.org/doc/templates.html

~: Converts all operands into strings and concatenates them. {{ "Hello " ~ name ~ "!" }} would return (assuming name is 'John') Hello John!.

but if i try:
<td>{{ ~ entity.author ~ }}</td>
it gives an error:
"Unexpected token "operator" of value "~" in src/Blog/AdminBundle/Resources/views/Post/index.html.twig at line 35 "

[gintare]

The error was that i should use method __toString() instead of toString() in \myproject\src\ Blog\ModelBundl e\Entity\Author .php