Jtwig获取参数显示

Question

I have got some get parameters as ?perpage=10&category=all&sort=relevance I want to read this params in my Jtwig code and print it. According to documentation and sources I found this should work:

{{ app.request.attributes.get('category') }}

or

{{ app.request.query.get('category') }}

and should print 'all' in that case, but both of these requests return empty string on my machine.

Sources: Twig - Get URL for canonical tag , https://github.com/symfony/symfony/issues/7960 .

Any suggestions or workarounds would be appreciated.

Answer 1

The request object is always added to the model. Then you just need to use the Java Servlet API to get the data you want. In this case, it would be something like:

{{ request.getParameter('category') }}

Answer 2

JTwig pages implicitly comes with a HttpServletRequest object - request. All you need to is to invoke the request object using the key "request" then access every public method of HttpServletRequest using dot(.) notation. eg

{{ request.getParameter("category") }}

You can also access your session variable in this manner eg

{{ request.session.getAttribute("account") }}