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POSymfony2 - array to string conversion error
 

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  1. POSymfony2 - array to string conversion error
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    <p>I've read the other subjects but it doesn't solve my problem so:</p> <p>I've got this </p> <pre><code>-&gt;add('role', 'choice', array( 'label' =&gt; 'I am:', 'mapped' =&gt; true, 'expanded' =&gt; true, 'multiple' =&gt; false, 'choices' =&gt; array( 'ROLE_NORMAL' =&gt; 'Standard', 'ROLE_VIP' =&gt; 'VIP', ) )) </code></pre> <p>And whatever I do, I get this error:</p> <pre><code>Notice: Array to string conversion in C:\xampp\htdocs\xxx\vendor\symfony\symfony \src\Symfony\Component\Form\Extension\Core\ChoiceList\ChoiceList.php line 458 </code></pre> <p>In my form type the setRole method is not even called (when I rename it to some garbage the error still occurs). Why is this happening?</p> <p>// EDIT</p> <p>Full stack trace:</p> <pre><code>in C:\xampp\htdocs\xxx\vendor\symfony\symfony\src\Symfony\Component\Form\Extension\Core\ChoiceList\ChoiceList.php at line 458 - */ protected function fixIndex($index) { if (is_bool($index) || (string) (int) $index === (string) $index) { return (int) $index; } at ErrorHandler -&gt;handle ('8', 'Array to string conversion', 'C:\xampp\htdocs \xxx\vendor\symfony\symfony\src\Symfony\Component\Form\Extension\Core\ChoiceList\ChoiceList.php', '458', array('index' =&gt; array())) in C:\xampp\htdocs\xxx\vendor\symfony\symfony\src\Symfony\Component\Form\Extension\Core\ChoiceList\ChoiceList.php at line 458 + at ChoiceList -&gt;fixIndex (array()) in C:\xampp\htdocs\xxx\vendor\symfony\symfony\src\Symfony\Component\Form\Extension\Core\ChoiceList\ChoiceList.php at line 476 + at ChoiceList -&gt;fixIndices (array(array())) in C:\xampp\htdocs\xxx\vendor\symfony\symfony\src\Symfony\Component\Form\Extension\Core\ChoiceList\SimpleChoiceList.php at line 152 + at SimpleChoiceList -&gt;fixChoices (array(array())) in C:\xampp\htdocs\xxx\vendor\symfony\symfony\src\Symfony\Component\Form\Extension\Core\ChoiceList\ChoiceList.php at line 204 + at ChoiceList -&gt;getIndicesForChoices (array(array())) in C:\xampp\htdocs\xxx\vendor\symfony\symfony\src\Symfony\Component\Form\Extension\Core\DataTransformer\ChoiceToBooleanArrayTransformer.php at line 63 + at ChoiceToBooleanArrayTransformer -&gt;transform (array()) in C:\xampp\htdocs\xxx\vendor\symfony\symfony\src\Symfony\Component\Form\Form.php at line 1019 + at Form -&gt;normToView (array()) in C:\xampp\htdocs\xxx\vendor\symfony\symfony\src\Symfony\Component\Form\Form.php at line 332 + at Form -&gt;setData (array()) in C:\xampp\htdocs\xxx\vendor\symfony\symfony\src\Symfony\Component\Form\Extension\Core\DataMapper\PropertyPathMapper.php at line 59 + at PropertyPathMapper -&gt;mapDataToForms (object(User), object(RecursiveIteratorIterator)) in C:\xampp\htdocs\xxx\vendor\symfony\symfony\src\Symfony\Component\Form\Form.php at line 375 + at Form -&gt;setData (object(User)) in C:\xampp\htdocs\xxx\vendor\friendsofsymfony\user-bundle\FOS\UserBundle\Controller\RegistrationController.php at line 49 + at RegistrationController -&gt;registerAction (object(Request)) at call_user_func_array (array(object(RegistrationController), 'registerAction'), array(object(Request))) in C:\xampp\htdocs\xxx\app\bootstrap.php.cache at line 2770 + at HttpKernel -&gt;handleRaw (object(Request), '1') in C:\xampp\htdocs\xxx\app\bootstrap.php.cache at line 2744 + at HttpKernel -&gt;handle (object(Request), '1', true) in C:\xampp\htdocs\xxx\app\bootstrap.php.cache at line 2874 + at ContainerAwareHttpKernel -&gt;handle (object(Request), '1', true) in C:\xampp\htdocs\xxx\app\bootstrap.php.cache at line 2175 + at Kernel -&gt;handle (object(Request)) in C:\xampp\htdocs\xxx\web\app_dev.php at line 29 + </code></pre>
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    1. COplease provide the full stack trace - otherwise nobody can see where the error has it's real source
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    2. COFull stack trace has been provided
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    3. COBy the way it happens only when I set mapped to true (which is now)
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