当你没有连接到你的表单数据类可以实现这样的形式从属约束:
$startRangeCallback = function ($object, ExecutionContextInterface $context) use ($form)
{
$data = $form->getData();
$rangeEnd = $data['range_end'];
if($object && $rangeEnd){
if ($object->getTimestamp() > $rangeEnd->getTimestamp()) {
$context->addViolation('Start date should be before end date!', array(), null);
}
}
};
$form->add('range_start', 'bootstrap_datepicker', array(
'format' => 'dd-MM-yyyy',
'required' => false,
'attr' => array('class' => "col-xs-2"),
'calendar_weeks' => true,
'clear_btn' => true,
'constraints' => array(
new Callback(array($startRangeCallback)),
)
)
);
$form->add('range_end', 'bootstrap_datepicker', array(
'format' => 'dd-MM-yyyy',
'required' => false,
'attr' => array('class' => "col-xs-2"),
'calendar_weeks' => true,
'clear_btn' => true,
)
);
请问您能解释一下如何实现回调约束吗?我正在查看Symfony2文档,我不知道如何访问我想检查isValid()函数的值。 –
当没有数据类时(当您使用数组时),它看起来不起作用。 – umpirsky