Installation

Use composer. Include in your composer.json

"cmedia/tag-bundle": "dev-master" 

Register bundle in app/AppKernel.php

// ...
new CMedia\Bundle\TagBundle\CMediaTagBundle(), 
// ...

Usage example

// Post.php
namespace Acme\DemoBundle\Entity;
use Doctrine\ORM\Mapping as ORM;
use Doctrine\Common\Collections\ArrayCollection;
use CMedia\Bundle\TagBundle\Entity\Interfaces\Taggable;
use CMedia\Bundle\TagBundle\Assistant\TagAssistant;
/**
 * Post
 *
 * @ORM\Table()
 * @ORM\Entity(repositoryClass="Acme\DemoBundle\Entity\PostRepository")
 */
class Post implements Taggable
{
 /**
 * @var integer
 *
 * @ORM\Column(name="id", type="integer")
 * @ORM\Id
 * @ORM\GeneratedValue(strategy="AUTO")
 */
 private $id;
 /**
 * Get id
 *
 * @return integer 
 */
 public function getId()
 {
 return $this->id;
 }
 /**
 * @ORM\Column(type="string", length=255)
 */
 protected $name;
 /**
 * @var string $tags
 * @ORM\ManyToMany(targetEntity="Tag", inversedBy="posts", cascade={"persist"})
 * 
 */
 protected $tags;
 protected $tagString;
 public function getTagString()
 {
 return TagAssistant::tagArrayToString($this);
 }
 public function setTagString($tagString)
 {
 $this->tagString = $tagString;
 }
 public function getTagsInserted()
 {
 return $this->tagString;
 }
 public function getTags()
 {
 return $this->tags;
 }
 public function setTags(ArrayCollection $tags)
 {
 foreach ($tags as $tag) {
 $tag->addPost($this);
 }
 
 $this->tags = $tags;
 return $this;
 }
 public function __construct()
 {
 $this->tags = new \Doctrine\Common\Collections\ArrayCollection();
 }
 /**
 * Set name
 *
 * @param string $name
 * @return Post
 */
 public function setName($name)
 {
 $this->name = $name;
 
 return $this;
 }
 /**
 * Get name
 *
 * @return string 
 */
 public function getName()
 {
 return $this->name;
 }
 /**
 * Add tags
 *
 * @param \Acme\DemoBundle\Entity\Tag $tags
 * @return Post
 */
 public function addTag(\Acme\DemoBundle\Entity\Tag $tags)
 {
 $this->tags[] = $tags;
 
 return $this;
 }
 /**
 * Remove tags
 *
 * @param \Acme\DemoBundle\Entity\Tag $tags
 */
 public function removeTag(\Acme\DemoBundle\Entity\Tag $tags)
 {
 $this->tags->removeElement($tags);
 }
}

// Tag.php
namespace Acme\DemoBundle\Entity;
use Doctrine\ORM\Mapping as ORM;
use CMedia\Bundle\TagBundle\Entity\Interfaces\TagContainable;
/**
 * Tag
 *
 * @ORM\Table()
 * @ORM\Entity
 */
class Tag implements TagContainable
{
 /**
 * @var integer
 *
 * @ORM\Column(name="id", type="integer")
 * @ORM\Id
 * @ORM\GeneratedValue(strategy="AUTO")
 */
 private $id;
 /**
 * Get id
 *
 * @return integer 
 */
 public function getId()
 {
 return $this->id;
 }
 /**
 * @ORM\Column(type="string", length=255)
 */
 protected $name;
 /** @ORM\ManyToMany(targetEntity="Post", mappedBy="tags") */
 protected $posts;
 public function __construct()
 {
 $this->posts = new \Doctrine\Common\Collections\ArrayCollection();
 }
 public function getName()
 {
 return $this->name;
 }
 /**
 * Set name
 *
 * @param string $name
 * @return Tag
 */
 public function setName($name)
 {
 $this->name = $name;
 
 return $this;
 }
 /**
 * Add posts
 *
 * @param \Acme\DemoBundle\Entity\Post $posts
 * @return Tag
 */
 public function addPost(\Acme\DemoBundle\Entity\Post $posts)
 {
 $this->posts[] = $posts;
 
 return $this;
 }
 /**
 * Remove posts
 *
 * @param \Acme\DemoBundle\Entity\Post $posts
 */
 public function removePost(\Acme\DemoBundle\Entity\Post $posts)
 {
 $this->posts->removeElement($posts);
 }
 /**
 * Get posts
 *
 * @return \Doctrine\Common\Collections\Collection 
 */
 public function getPosts()
 {
 return $this->posts;
 }
}

In PostType.php don't include TagType itself. Use implemented $tagString instead

// ...
->add('tagString', 'hidden')
// ...

In your controller

/**
 * Creates a new Post entity.
 *
 * @Route("/", name="post_create")
 * @Method("POST")
 * @Template("AcmeDemoBundle:Post:new.html.twig")
 */
public function createAction(Request $request)
{
 $entity = new Post();
 $form = $this->createForm(new PostType(), $entity);
 $form->bind($request);
 if ($form->isValid()) {
 $em = $this->getDoctrine()->getManager();
 $this->get('cm_tag_assistant')->processTags($entity, "\Acme\DemoBundle\Entity\Tag");
 $em->persist($form->getData());
 $em->flush();
 return $this->redirect($this->generateUrl('post_show', array('id' => $entity->getId())));
 }
 return array(
 'entity' => $entity,
 'form' => $form->createView(),
 );
}

CMediaTagBundle comes with builting js TagManager library

TagManager usage example:

<!-- in form -->
<input id="tag-manager" type="text" name="tags" autocomplete="off" data-provide="typeahead" placeholder="Tags" class="tagManager input-small"/>
<!-- in your stylesheets -->
<link rel="stylesheet" type="text/css" href="{{ asset('bundles/cmediatag/css/bootstrap-tagmanager.css') }}">
<!-- in your javascripts -->
<script type="text/javascript" src="{{ asset('bundles/cmediatag/js/bootstrap-tagmanager.js') }}"></script>
{{ include('CMediaTagBundle::script.html.twig', {'tagManagerId': 'tagManager', 'tagListId': 'acme_demobundle_posttype_tagString', 'tagListName': 'acme_demobundle_posttype[tagString]', 'ajaxPath': ''}) }}