由网友(找回遗失的自己)分享简介：我尝试类似的东西 - Validating动态加载在Symfony的2个选择 I try something like that - Validating dynamically loaded choices in Symfony 2 但，当我们得到submited形式检查可能的值 - 在我sitation任何是...

我尝试类似的东西 - Validating动态加载在Symfony的2个选择

I try something like that - Validating dynamically loaded choices in Symfony 2

但，当我们得到submited形式检查可能的值 - 在我sitation任何是正确的。

but this when we get submited form check possible values - in my sitation any is correct.

我添加修改，以允许任何值 - 喜欢这里

i add modification to allow any value - like here

$builder->addEventListener(FormEvents::PRE_SUBMIT, function (FormEvent $event) {
        $data = $event->getData();
        $event->getForm()->add('tags', 'tag', [
            'label'   => 'Sub Choice',
            'choices' => $data['tags'],
            'mapped'=>false,
            'required'=>false,
            'multiple'=>true,
        ]);
    });

但它不能正常工作 - 如何使其可用

but it not work - how to make it usable ?

标签是我选择的输入EXTENS（对于JS AJAX选择）

tag is my input extens of choice (for js ajax chosen)

推荐答案

好吧，我发现问题。这个例子是确定的，但我们需要array_flip

ok i found problem. This example is ok but we need array_flip

这里工作版本

 $builder->addEventListener(FormEvents::PRE_SUBMIT, function (FormEvent $event) {
        $data = $event->getData();
        if(is_array($data['tags']))$data=array_flip($data['tags']);
        else $data = array();
        $event->getForm()->add('tags', 'tag', [
            'label'   => 'Sub Choice',
            'choices' => $data,
            'mapped'=>false,
            'required'=>false,
            'multiple'=>true,
        ]);
    });