I am trying to use a getTags() array which is an array of arrays into another method GetTagWeights($tags) but am getting an error when using it with this line:
$tagWeights[$tag] = (isset($tagWeights[$tag['tag']])) ? $tagWeights[$tag['tag']] + 1 : 1;
I get the following error:
ContextErrorException: Warning: Illegal offset type in /var/www/html/Satori/src/Symfony/AcmeBundle/Entity/TagRepository.php line 34
Question: What am I doing wrong here, I've dumped getTags() and there is data?
My process is getting tags then weighting the tags for popularity. Tag is setup as a ManyToMany/ManyToMany entity with a Blog entity.
getTags and getTagWeight methods (dumping $tags from getTags() returns an array of arrays)
array (size=6)
0 =>
array (size=1)
'tag' => string 'Tag 1' (length=5)
1 =>
array (size=1)
'tag' => string 'Tag 2' (length=5)
2 =>
array (size=1)
'tag' => string 'Tag 3' (length=5)
public function getTags()
{
$tags = $this->createQueryBuilder('t')
->select('t.tag')
->getQuery()
->getResult();
return $tags;
}
public function getTagWeights($tags)
{
$tagWeights = array();
if (empty($tags))
return $tagWeights;
foreach ($tags as $tag)
{
$tagWeights[$tag] = (isset($tagWeights[$tag['tag']])) ? $tagWeights[$tag['tag']] + 1 : 1;
}
// Shuffle the tags
uksort($tagWeights, function() {
return rand() > rand();
});
$max = max($tagWeights);
// Max of 5 weights
$multiplier = ($max > 5) ? 5 / $max : 1;
foreach ($tagWeights as &$tag)
{
$tag = ceil($tag * $multiplier);
}
return $tagWeights;
}
Controller
$em = $this->getDoctrine()->getManager();
$tags = $em->getRepository('AcmeBundle:Tag')
->getTags();
$tagWeights = $em->getRepository('AcmeBundle:Tag')
->getTagWeights($tags);
// var_dump($tagWeights); die();
return array(
'tags' => $tagWeights,
);
Tag entity
class Tag
{
/**
* @var integer
*
* @ORM\Column(name="id", type="integer")
* @ORM\Id
* @ORM\GeneratedValue(strategy="AUTO")
*/
private $id;
/**
* @var string
*
* @ORM\Column(name="tag", type="string", length=255)
*/
private $tag;
/**
* @ORM\ManyToMany(targetEntity="Blog", mappedBy="tags")
*/
protected $blogs;
public function __construct()
{
$this->blogs = new ArrayCollection();
}
/**
* Get id
*
* @return integer
*/
public function getId()
{
return $this->id;
}
/**
* Set tag
*
* @param string $tag
* @return Tag
*/
public function setTag($tag)
{
$this->tag = $tag;
return $this;
}
/**
* Get tag
*
* @return string
*/
public function getTag()
{
return $this->tag;
}
/**
* Add blogs
*
* @param \AcmeBundle\Entity\Blog $blogs
* @return Tag
*/
public function addBlog(\AcmeBundle\Entity\Blog $blogs)
{
$this->blogs[] = $blogs;
return $this;
}
/**
* Remove blogs
*
* @param \AcmeBundle\Entity\Blog $blogs
*/
public function removeBlog(\AcmeBundle\Entity\Blog $blogs)
{
$this->blogs->removeElement($blogs);
}
/**
* Get blogs
*
* @return \Doctrine\Common\Collections\Collection
*/
public function getBlogs()
{
return $this->blogs;
}
}
This is how I am accessing tags in twig:
{% for tag, weight in tags %}
<span class="weight-{{ weight }}"><a href="{{ path('AcmeBundle_tag', { 'tag': tag.tag }) }}">{{ tag.tag }}</a></span>
{% else %}
<p>There are no tags</p>
{% endfor %}
From the documentation:
Arrays and objects can not be used as keys. Doing so will result in a warning: Illegal offset type.
You are trying to use $tag
as key here:
$tagWeights[$tag] = (isset($tagWeights[$tag['tag']])) ? $tagWeights[$tag['tag']] + 1 : 1;
but because $tag
is an array, you get an error.
I guess you wanted to do this:
$tagWeights[$tag['tag']] = (isset($tagWeights[$tag['tag']])) ? $tagWeights[$tag['tag']] + 1 : 1;