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POEntities passed to the choice field must be managed
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  1. POEntities passed to the choice field must be managed
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    copied!<p>i search the answers from internet but i can not find a reason: i have a table company, a table companyType, so : </p> <pre><code>/** * Acme\UserBundle\Entity\Company * * @ORM\Table(name="company") * @ORM\Entity */ class Company { /** * @var integer $id * * @ORM\Column(name="id", type="integer", nullable=false) * @ORM\Id * @ORM\GeneratedValue(strategy="IDENTITY") */ private $id; /** * @var CompanyType * * @ORM\ManyToOne(targetEntity="CompanyType") * @ORM\JoinColumns({ * @ORM\JoinColumn(name="company_type_id", referencedColumnName="id") * }) */ private $companyType; ... </code></pre> <p>}</p> <pre><code>/** * Acme\UserBundle\Entity\CompanyType * * @ORM\Table(name="company_type") * @ORM\Entity */ class CompanyType { /** * @var integer $id * * @ORM\Column(name="id", type="integer", nullable=false) * @ORM\Id * @ORM\GeneratedValue(strategy="IDENTITY") */ private $id; /** * @var string $name * * @ORM\Column(name="name", type="string", length=45, nullable=true) */ private $name; .... public function __toString(){ return $this-&gt;name; } </code></pre> <p>}<br> and then , in the formtype class:</p> <pre><code>class CompanyForm extends AbstractType { public function buildForm(FormBuilder $builder, array $options) { $builder -&gt;add('name') -&gt;add('siren') -&gt;add('siret') -&gt;add('tvaCommun') -&gt;add('apeCode') ; $builder-&gt;add('activity','collection', array('type'=&gt; new ActivityForm())); $builder-&gt;add('companyType','entity',array( 'class' =&gt; 'AcmeUserBundle:CompanyType', )); } ... } </code></pre> <p>when i trying to use the form: </p> <pre><code> {{ form_row(company.companyType) }} </code></pre> <p>in the view, i got the error message.</p>
 

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