Symfony2controller, symfony2_PHP tutorial

Symfony2controller, symfony2. Symfony2controller, symfony21, basic concepts: an http Request input (Request): header information, get information, post data, and other outputs (Response): symfony processed returned messages symfony2 controller, symfony2

1. Basic concepts

One http Request (Request): header information, get information, post data, etc.

Response: The information returned by symfony after processing, including the page, json string, and URL jump.

2. Request

$ This-> getRequest ()

Httpie tool

HTTPie (read aych-tee-pie) is an HTTP command line client. The goal is to make the interaction between CLI and web services as user-friendly as possible.

Install reference http://blog.csdn.net/pzw_0612/article/details/46521965

Http://www.cnblogs.com/huangjacky/archive/2012/03/28/2421866.html

Simulate form submission (post) with httpie)

>http -f post http://localhost:8000/app_dev.php/page/test name=lily

3. Response

 Use Symfony \ Component \ HttpFoundation \ Response; // do not reference the errorUse Symfony \ Component \ HttpFoundation \ JsonResponse; use Symfony \ Component \ HttpFoundation \ RedirectResponse; class DefaultController extends Controller {/*** @ Route ("/page/test1 ") */public function test1Action (){
// If no template is used, directly output the content or jump to // return new RedirectResponse ('http: // www.cnblogs.com/tianxintian22 /'); redirect // return new JsonResponse (array ('a' => 'abcdef '); return json string return new Response ('20140901 ');}}

4. session

$this->getRequest()->getSession()->set('b', 'ni hao!');$this->getRequest()->getSession()->get('b');

If the session value cannot be correctly obtained, it may be that the session permission in the app/cache/dev directory is incorrect.

// Call flashmessage, which can only be displayed once and is discarded. it is generally used in form User information prompts. // php
$ This-> getRequest ()-> getSession ()-> getFlashBag ()-> add ('notic', 'You have something wrong ');

// Twig
{% For flashMessage in app. session. flashbag. get ('notice ') %}
    

{FlashMessage }}
    

{% Endfor %}

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