Getting below error..
An exception has been thrown during the rendering of a template ("The form's view data is expected to be of type scalar, array or an instance of \ArrayAccess, but is an instance of class Proxies__CG__\BLA\MyBundle\Entity\TransportType. You can avoid this error by setting the "data_class" option to "Proxies__CG__\BLA\MyBundle\Entity\TransportType" or by adding a view transformer that transforms an instance of class Proxies__CG__\BLA\MyBundle\Entity\TransportType to scalar, array or an instance of \ArrayAccess.") in MyBundle:Shipping:form.html.twig at line 8.
$builder->add('variables','collection', array(
'type' => new AbcType(),
'options' => array(
'required' => true,
),
'constraints' => new NotNull()));
AbcType.php
class AbcType extends AbstractType
{
/**
* Build form
*
* @param FormBuilder $builder
* @param array $options
*
* @return void
*/
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder->add('importance', null, array('empty_value'=>false,'expanded'=>true,
'required'=>true,'multiple'=>false,
'constraints' => new NotNull()))
->add('timeSpent', null, array(
'empty_value'=>false,'expanded'=>true,
'required'=>true,'multiple'=>false,
'constraints' => new NotNull()
)
);
}
/**
* setDefaultOptions set Default values
*
* @param OptionsResolverInterface $resolver
*/
public function setDefaultOptions(OptionsResolverInterface $resolver)
{
$resolver->setDefaults(array(
'data_class' => 'Demo\MyBundle\Entity\Abc'
));
}
/**
* getName will return Form name
* @return string
*/
public function getName()
{
return 'demo_mybundle_abctype';
}
}
I fixed issue using below link....