php 如何使 form_rest() 不显示带有 Symfony2 的字段？
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How to make form_rest() not display a field with Symfony2?
提问by Ilan Coulon
I've started to use Symfony2 but I've some problems.
I wanted to render fields by hand but it doesn't work because my field yet rendered by me is displayed with the form_rest()function too, so I have two same fields.
我已经开始使用 Symfony2 但我遇到了一些问题。我想手动渲染字段，但它不起作用，因为我尚未渲染的字段也与该form_rest()函数一起显示，所以我有两个相同的字段。
Here is my code :
这是我的代码：
<div>
{{ form_errors(form.contenu) }}
<textarea id="{{ form.contenu.vars.id }}" name="{{ form.contenu.vars.full_name }}">{{ form.contenu.vars.value }}</textarea>
</div>
And, at the form's end, I must put this :
而且，在表格的最后，我必须把这个：
{{ form_rest(form) }}
But it displays the "contenu" field :(
但它显示“contenu”字段:(
Do you have an idea of what's the problem ?
你知道有什么问题吗？
回答by Francesc Rosas
Another option is to explicitly mark the field as rendered:
另一种选择是将字段显式标记为已呈现：
{% do form.contenu.setRendered %}
回答by Andresch Serj
Another in my opinionless hacky way to do it is this:
在我看来，另一种不那么hacky的方法是这样的：
{{ form_widget(form._token) }} // render the CSRF Token
{{ form_end(form, {'render_rest': false}) }} // do not render anything else
It's from the official documentation(v3.0) so it's pretty much best practisei guess.
它来自官方文档（v3.0），所以我猜这几乎是最佳实践。
回答by gremo
{{ form_rest(form) }}goes at the very end, after rendering each field "manually". If you are using it for the CSRF token you can always render it with:
{{ form_rest(form) }}在“手动”渲染每个字段之后，最后进行。如果您将它用于 CSRF 令牌，您可以始终使用以下方式渲染它：
{# Token CSRF #}
{{ form_widget(form._token) }}
回答by Jovan Perovic
The situation in which you don't want to show some field suggests badly designed form. You could feed some argument(s) into it's __constructto make it conditional (say, include/exclude some fields) or you could just create separate Formclasses (which is, in my opinion, a bit overkill).
您不想显示某些字段的情况表明表单设计不当。您可以向其中提供一些参数__construct以使其成为有条件的（例如，包含/排除某些字段），或者您可以只创建单独的Form类（在我看来，这有点矫枉过正）。
I had common case few months ago when form differed when user inserted/updated records. It was something like this:
几个月前，当用户插入/更新记录时表单不同时，我遇到了常见的情况。它是这样的：
...
public function __construct($isUpdateForm){
$this->isUpdateForm= $isUpdateForm;
}
public function buildForm(FormBuilder $builder, array $options){
....
$builder->add('some_filed', 'text', ..... );
if ( $this->isUpdateForm ){
$builder->add(.....);
}
....
}
....
If for some reasons you're not able to refactor form class you could still display unwanted fields but wrap them into <div>which has CSS display:noneattribute. That way "they are still there" (and by all means are processed normally) but are not visible to user.
如果由于某些原因您无法重构表单类，您仍然可以显示不需要的字段，但将它们包装到<div>具有 CSSdisplay:none属性的地方。这样“它们仍然存在”（并且无论如何都正常处理）但对用户不可见。
Hope this helps...
希望这可以帮助...
