Illegal offset type in isset or empty in EntityChoiceList.php line 273
doctrine-orm, symfony
Solution
If you're getting this while trying to remove an element from an ArrayCollection it's probably because you've typed:
`$list->remove($item)` instead of `$list->removeElement($item)`
Problem
Within my Symfony2 project I've attempted to dynamically generate the entities used within my form type, by-passing the use of query builder etc. To he entity choices property I am supplying an array of entities to be used. On page load everything seems fine and the correct content is displayed. However on form submission I get Illegal offset type in isset or empty in EntityChoiceList.php line 273 ``` at ErrorHandler ->handle ('2', 'Illegal offset type in isset or empty', '..../Symfony/Bridge/Doctrine/Form/ChoiceList/EntityChoiceList.php', '273', array('key' => object(myEntity))) in ..../Symfony/Bridge/Doctrine/Form/ChoiceList/EntityChoiceList.php at line 273 ..... return isset($entities[$key]) ? $entities[$key] : null; ..... ``` What has me stumped is if I add var_dump(isset($this->entities[$key]));exit; above this line I am returned 'bool(true)' which to me means the key does exist. As background I have attempted to extend the EntityType, for ease within my project and added: ``` public function getDefaultOptions(array $options) { $defaultOptions = array( 'em' => null, 'class' => 'Acme\TestBundle\Entity\myEntity', 'property' => null, 'query_builder' => null, 'choices' => $this->myEntityArray, ); $options = array_replace($defaultOptions, $options); $defaults = parent::getDefaultOptions($options); return $defaults; } ``` Has any one any ideas why I getting this error, or am I going about my issue all wrong anyway, with trying to pass an array of entities to choices?