Symfony2数组到字符串的转换

Question

i'm working on symfony2 project and i get this exception. anybody have an idea on what is causing it ?

Notice: Array to string conversion in C:\\wamp\\www\\EmploiPublic\\vendor\\symfony\\symfony\\src\\Symfony\\Component\\Form\\Extension\\Core\\ChoiceList\\ChoiceList.php line 457

protected function fixIndex($index)
{
    if (is_bool($index) || (string) (int) $index === (string) $index) { //this is line 457
        return (int) $index;
    }

    return (string) $index;
}

the error is generated after calling the $form->bind($request) method;

   if ($request->isMethod('POST')) {

        $form->bind($request);
        $searchQuery = $form->getData();
    }

Answer 1

When bind() tries to map your data values to the form, it's getting an array value for a Choice field where it's expecting a single string value.

It may be that the Choice field should allow multi-select, in which case you need to make sure that when you create the Choice control you set ' multiple ' to true (and also consider the ' expanded ' option).

Otherwise, it's not possible to diagnose your issue unless you post the code that creates the form and the class or data structure that maps onto the form.