在symfony2树枝模板中找不到实体

Question

In my project I have a table named service_provider.There is a rating system available for each service provider.

My service provider entity,

class ServiceProviders
{
    /**
     * @var integer
     *
     * @ORM\Column(name="service_provider_id", type="integer", nullable=false)
     * @ORM\Id
     * @ORM\GeneratedValue(strategy="IDENTITY")
     */
    private $serviceProviderId;


     /**
     * @var \Ratings
     *
     * @ORM\OneToOne(targetEntity="Ratings",inversedBy="serviceProviders",cascade={"all"})
     * @ORM\JoinColumns({
     *   @ORM\JoinColumn(name="service_provider_id", referencedColumnName="service_provider_id")
     * })
     */
    private $ratings;
}

My Rating entity,

class Ratings
{

    /**
     * @var integer
     *
     * @ORM\Column(name="service_provider_id", type="integer", nullable=false)
     * @ORM\Id
     * @ORM\GeneratedValue(strategy="IDENTITY")
     */
    private $serviceProviderId;

    /**
     * @var \ServiceProviders
     *
     * @ORM\OneToOne(targetEntity="ServiceProviders",mappedBy="ratings",cascade={"all"})
     * @ORM\JoinColumns({
     *   @ORM\JoinColumn(name="service_provider_id", referencedColumnName="service_provider_id")
     * })
     */
    private $serviceProviders;
}

and in my serviceProviderEntity I wrote a join query to fetch all data.

class ServiceProvidersRepository extends EntityRepository
{
    public function findAllProviders($where,$order,$rowCount,$page)
    {
        $query = $this->createQueryBuilder('s')
                ->select('s')
            ->leftJoin('s.ratings','r')
                    ->where('s.status= :status')
            ->andWhere($where)
                ->setParameter('status', 'A')
            ->orderBy($order)
                    ->setMaxResults($rowCount)
                    ->setFirstResult($offset)
                    ->getQuery();
        $result = $query->getResult();
     }
}

It all works fine,but when there is no data corresponding to a service provider in rating table,An error occurred in twig template 'Entity was not found'.Can any one help me,how can solve this problem.

My controller action,

 public function providerSearchAction()
 {
       $pagination = $entityManager->getRepository('EvpEventpriceBundle:ServiceProviders')->findAllProviders($where,'s.serviceProviderId',$rowCount,$page);
       return $this->render('EvpEventpriceBundle:ServiceProviders:search.html.twig',array('pagination'=>$pagination));
  }

And my twig template,

{% for provider in pagination %}
     {% for i in 0..4 %}

    {% if provider.ratings|length %}
    {% if (i<((provider.ratings.totalValue/provider.ratings.totalVotes)|number_format)-0.5) %}
        {% set class = "ratings_stars ratings_vote" %}
    {% else %}
        {% set class = "ratings_stars" %}
    {% endif %}
    {% endif %}
    <div class="star_{{i+1}} {{class}}"></div>
    {% endfor %}

{% endfor %}

Answer 1

can you change your 4th line of twig with this and try:

{% if provider.ratings is defined and provider.ratings is not empty %}

and add {% set class = "" %} in case that the test don't instantiate class variable

Answer 2

There are a couple of things wrong here:

You are mapping the same database column as a field/column and association in your entity. This will make Doctrine very confused! Always choose between a field/column or association (usually you'll want the association).

Also, you're using @ORM\\JoinColumns where you shouldn't, @ORM\\JoinColumn is enough.

Don't use cascade options on both sides of the association, this will drastically impact Doctrine's performance. Furthermore, it feels like you put cascade={"all"} in there because it sounded convenient when you read the docs (no pun intended). But you should think very carefully when using cascades. Every cascade has a performance penalty, so my advise is to wait using them until you actually need them.

nullable=FALSE isn't needed on @Column , nullable isn't allowed by default on fields/columns. They are however allowed by default on associations.

You're using the plural form of names where the singular form is better. For example, your entity ServiceProviders can better be named ServiceProvider , because 1 entity is 1 ServiceProvider (not many ServiceProviders).

I'm not really sure which side of the association you want to be the owning side. I'll assume you want Rating to be the owning side because you're using service_provider_id as foreign key.

Here's the fix to the things I mentioned above:

/**
 * @ORM\Entity
 */
class ServiceProvider
{

    /**
     * @ORM\Column(type="integer")
     * @ORM\Id
     * @ORM\GeneratedValue(strategy="IDENTITY")
     */
    private $id;

    /**
     * @ORM\OneToOne(targetEntity="Rating", mappedBy="serviceProvider")
     */
    private $rating;

}

/**
 * @ORM\Entity
 */
class Rating
{

    /**
     * @ORM\Column(type="integer")
     * @ORM\Id
     * @ORM\GeneratedValue(strategy="IDENTITY")
     */
    private $id;

    /**
     * @ORM\OneToOne(targetEntity="Customer", inversedBy="rating")
     * @ORM\JoinColumn(name="service_provider_id", referencedColumnName="id")
     */
    private $serviceProvider;

}

You can (and should) always validate your mappings using the console: Doctrine 2: doctrine orm:validate-schema , Symfony 2: app/console doctrine:schema:validate .