symfony2:在控件动作内设置表单外的表单域的值 [英] symfony2: setting the value of a form field outside the form, inside a controller action
问题描述
我需要设置一个symfony2表单元素的值。
我使用一个doctrine2实体,一个 Symfony\Component\Form\AbstractType 和我的Controllers Action中的createForm()方法。
$ pre>
$ saleDataForm = $ this-> createForm(new SaleType(),$ sale);
现在,我如何从该表单中获取元素,我如何设置它的价值?
我想做这样的事情,但它不起作用:
$ saleDataForm-> get '图像') - >的setValue( 'someimapge.jpg');
FYI:我需要这样做来正确渲染字段(使用这种方法,我的图像字段始终为空,我需要设置它
对于 imagePath 的内容,以呈现上传的图像的预览)一个更准确的答案应该包括你在这个表单中使用的实体,所以我们可以看到getter和setter。但是根据你的问题,这应该是有效的:
控制器内部执行以下操作:
$ saleDataForm- >的getData() - >的getImage() - >的setValue( 'someimage.jpg');
$ form-> setData($ form-> getData());
这是如果表单已经创建了:
$ pre>
$ saleDataForm = $ this-> createForm(new SaleType(),$ sale);
$ saleDataForm-> getData() - > getImage() - > setValue('someimage.jpg');
$ form-> setData($ form-> getData());
要获取数据,请使用:
$ saleDataForm->的getData() - >的getImage() - >的getValue();
I need to set the value of a symfony2 form element. I use a doctrine2 entity, a Symfony\Component\Form\AbstractType and the createForm() method inside my Controllers Action.
$saleDataForm = $this->createForm(new SaleType(), $sale);
Now, how do i get an element from that form, and how can i set it's value? I want to do something like this, but it doesn't work:
$saleDataForm->get('image')->setValue('someimapge.jpg');
FYI: I need to do this to render the field correctly (using this approach, my image field is always empty and i need to set it to the content of imagePath to present a preview of an uploaded image)
For a more exact answer you should include the entities you use in this form so we can see the getters and setters. But based on your question this should work: Inside the controller do this:
$saleDataForm->getData()->getImage()->setValue('someimage.jpg');
$form->setData($form->getData());
This is if the form is already created so:
$saleDataForm = $this->createForm(new SaleType(), $sale);
$saleDataForm->getData()->getImage()->setValue('someimage.jpg');
$form->setData($form->getData());
To get the data use this:
$saleDataForm->getData()->getImage()->getValue();
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