On 20.10.2010, at 17:33, Thibault D wrote:
> If you need a variable in your layout, you may consider writing a
> template helper for it. If it's a menu, MenuBundle provides an easy
> way to create a helper for your menu (http://github.com/knplabs/
> MenuBundle/blob/master/Resources/doc/02-Integrate-With-
> Symfony.markdown)
yes, template helpers can certainly cover some of the task.
however i dont think that they are the way to go for everything one might want
to inject dynamically. it just seems wrong to just offer a way for templates to
pull data in. this seems like it will inevitably lead to more and more logic in
the templates.
i have another use case that we might need to address somehow. i am actually
AJAJ-ifying DoctrineUserBundle. that means i will actually need to return the
HTML as a JSON response. I rather not do AJAX. now the tricky bit is that while
there is the magic _format handling inside the routes, the issue is that it
immediately makes all of your templates magically look for other templates. but
in my case i want to return HTML wrapped inside a JSON structure. for now the
only good approach I have found here is to actually have a generic wrapper
controller which gets a URI passed to it, creates a subrequest by matching the
uri.
protected function handleRequest($request, $i)
{
if (empty($request['uri'])) {
throw new \Exception('no uri or controller given for index: '.$i);
}
if (empty($request['query'])) {
$request['query'] = array();
}
$request['uri'] =
preg_replace('/^('.preg_quote($this->request->getScriptName(), '/').')?\//',
'', $request['uri']);
$subRequest = $this->request->create($request['uri'], 'get',
$request['query']);
if (false === ($parameters =
$this->router->match($subRequest->getPathInfo()))) {
throw new \Exception('uri did not match a route for index: '.$i);
}
$subRequest->attributes->add($parameters);
$response = $this->kernel->handle($subRequest,
\Symfony\Component\HttpKernel\HttpKernelInterface::SUB_REQUEST);
return array(
'id' => $i,
'status' => $response->getStatusCode(),
'html' => $response->getContent(),
);
}
this method is also capable of issuing multiple such requests in one call, so
this is a bit of added functionality for the cases where i need to fetch output
from multiple controller (actions). but i wonder if we can make this use case
also a bit easier for Bundle developers to support. aka making it possible to
also return JSON structures. so far the only alternative approach i could think
of using a php template as a layout template that does the call to
json_encode() and potentially also sets the headers. but again this feels very
unclean.
regards,
Lukas Kahwe Smith
[email protected]
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