php 方法redirectToRoute() 可以有像render() 这样的参数吗？
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Can the method redirectToRoute() have arguments like render()?
提问by enlego
I need to access an entity in twig from symfony2. Inside the controler, I can do something as:
我需要从 symfony2 访问 twig 中的实体。在控制器内部，我可以做一些事情：
return $this->render('frontendBundle::carrodecompras.html.twig', array(
'entity' => $entity
));
And then in twig I can access the entity properties with entity.nameand such.
然后在树枝中，我可以使用等访问实体属性entity.name。
I need to accomplish the same thing but with the function redirectToRoute()
我需要完成同样的事情，但功能 redirectToRoute()
return $this->redirectToRoute('frontend_carrodecompras', array(
'entity' => $entity,
));
But it doesn't seem to work.
但它似乎不起作用。
I'm getting the following error:
我收到以下错误：
Variable "entity" does not exist in frontendBundle::carrodecompras.html.twig at line 32
在第 32 行的 frontendBundle::carrodecompras.html.twig 中不存在变量“实体”
EDIT: I'm using Symfony 2.7
编辑：我正在使用 Symfony 2.7
The variable $entity exists (it's actually called $cortina in the app I was using $entity for simplification), just before the redirectToRoute function I did this to test it
变量 $entity 存在（在我使用 $entity 进行简化的应用程序中实际上称为 $cortina），就在 redirectToRoute 函数之前，我这样做是为了测试它
echo "<pre>";
var_dump($cortina);
echo "</pre>";
return $this->redirectToRoute('frontend_carrodecompras', array(
'cortina' => $cortina,
));
And the result is this:
结果是这样的：
object(dexter\backendBundle\Entity\cortina)#373 (16) {
["id":"dexter\backendBundle\Entity\cortina":private]=>
int(3)
...
This is the Twig code:
这是树枝代码：
<tr>
{% set imagentela = "img/telas/" ~ cortina.codInterno ~ ".jpg" %}
<td><img src="{{ asset(imagentela | lower ) }}" alt="" width="25" height="25">
</td>
<td>{{ cortina.nombre }}</td>
<td>{{ "$" ~ cortina.precio|number_format('0',',','.') }}</td>
</tr>
回答by Heah
When you call redirectToRoute($route, array $parameters)from a controller, $parametersis used to generate the url tokens, not variables to render in view, this is done by the controller assigned to the route you are redirecting to.
当您redirectToRoute($route, array $parameters)从控制器调用时，$parameters用于生成 url 标记，而不是要在视图中呈现的变量，这是由分配给您重定向到的路由的控制器完成的。
example :
例子 ：
class FirstController extends Controller
{
/**
* @Route('/some_path')
*/
public function someAction()
{
// ... some logic
$entity = 'some_value';
return $this->redirectToRoute('some_other_route', array('entity' => $entity)); // cast $entity to string
}
}
class SecondController extends Controller
{
/**
* @Route('/some_other_path/{entity}', name="some_other_route")
*/
public function otherAction($entity)
{
// some other logic
// in this case $entity equals 'some_value'
$real_entity = $this->get('some_service')->get($entity);
return $this->render('view', array('twig_entity' => $real_entity));
}
}
回答by SacWebDeveloper
$this->redirectToRoute('something', array('id' => 1)is a convenience wrapper to $this->redirect($this->generateUrl('something', array('id' => 1))). It builds a URL with your params and is expecting the value of the params to be a string or a number.
$this->redirectToRoute('something', array('id' => 1)是一个方便的包装器$this->redirect($this->generateUrl('something', array('id' => 1)))。它使用您的参数构建一个 URL，并期望参数的值是字符串或数字。
http://symfony.com/blog/new-in-symfony-2-6-new-shortcut-methods-for-controllers
http://symfony.com/blog/new-in-symfony-2-6-new-shortcut-methods-for-controllers
You need to either pass the id of the entity to then fetch the data in the new action or break it down into individual pieces of data before it hits the redirectToRoute() call.
您需要传递实体的 id，然后在新操作中获取数据，或者在它点击 redirectToRoute() 调用之前将其分解为单独的数据片段。
class MyController extends Controller {
public function myAction(){
$cortina = new Cortina();
$cortina->something = "Some text";
$em = $this->getDoctrine()->getManager();
$em->persist($cortina);
$em->flush();
return $this->redirectToRoute('frontend_carrodecompras', array(
'id' => $cortina->getId()
);
}
}
