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webman-視圖-模板賦值

发布时间：2022-01-24 11:46:01编辑：雪饮阅读（）

除了使用view(模版, 变量数组)给模版赋值，我们还可以在任意位置通过调用View::assign()给模版赋值。

View::assign()在某些场景下非常有用，例如某系统每个页面首部都要显示当前登录者信息，

如果每个页面都将此信息通过 view('模版', ['user_info' => '用户信息']); 赋值将非常麻烦。解决办法就是在中间件中获得用户信息，然后通过View::assign()将用户信息赋值给模版。

首先是路由config/route.php中有用到中間件：

<?php

/**

* This file is part of webman.

* Licensed under The MIT License

* For full copyright and license information, please see the MIT-LICENSE.txt

* Redistributions of files must retain the above copyright notice.

* @author walkor<walkor@workerman.net>

* @copyright walkor<walkor@workerman.net>

* @link http://www.workerman.net/

* @license http://www.opensource.org/licenses/mit-license.php MIT License

use Webman\Route;

Route::get('/blog/index', [app\controller\Foo::class, 'index'])->middleware([app\middleware\AccessControlTest::class]);

然後所用的中間件\app\middleware\AccessControlTest.php:

<?php

namespace app\middleware;

use Webman\MiddlewareInterface;

use Webman\Http\Response;

use Webman\Http\Request;

use support\View;

class AccessControlTest implements MiddlewareInterface

{

public function process(Request $request, callable $next) : Response

{

View::assign('name3', 'value3');

$request->data = ["user_name"=>"kasumi"];

$response = $next($request);

return $response;

}

然後視圖我們用config/view.php配置為think-template(當然這裏僅僅是以think-template爲例，也可以用其它模板引擎，不同引擎可能有所配置不同):

<?php

/**

* This file is part of webman.

* Licensed under The MIT License

* For full copyright and license information, please see the MIT-LICENSE.txt

* Redistributions of files must retain the above copyright notice.

* @author walkor<walkor@workerman.net>

* @copyright walkor<walkor@workerman.net>

* @link http://www.workerman.net/

* @license http://www.opensource.org/licenses/mit-license.php MIT License

use support\view\Raw;

use support\view\Twig;

use support\view\Blade;

use support\view\ThinkPHP;

return [

//'handler' => Raw::class

'handler' => ThinkPHP::class

];

接下來是咱們所應用的控制器\app\controller\Foo.php:

<?php

namespace app\controller;

use support\Request;

use support\View;

class Foo

{

/**

* 该方法会在请求前调用

public function beforeAction(Request $request)

{

echo 'beforeAction';

// 若果想终止执行Action就直接返回Response对象，不想终止则无需return

// return response('终止执行Action');

}

/**

* 该方法会在请求后调用

public function afterAction(Request $request, $response)

{

echo 'afterAction';

// 如果想串改请求结果，可以直接返回一个新的Response对象

// return response('afterAction');

}

public function index(Request $request)

{

View::assign([

'name1' => 'value1',

'name2'=> 'value2',

]);

return view('user/hello', ['name' => 'webman111']);

}

public function login(Request $request)

{

$session = $request->session();

$session->set('userinfo', ["user_name"=>"kasumi"]);

return response('login success');

}

public function loginPage(Request $request){

return response("this is loginPage \n");

}

然後是我們所用到的模板文件\app\view\hello.html:

<!doctype html>

<html>

<head>

<title>webman</title>

</head>

<body>

hello ggg {$name} {$name1} {$name3}

</body>

</html>

我們修改代碼時候其實代碼通過reload已經自動重載到内存了

[root@localhost webman]# /usr/local/php734/bin/php -c /usr/local/php734/lib/php.ini start.php start

Workerman[start.php] start in DEBUG mode

----------------------------------------- WORKERMAN -----------------------------------------

Workerman version:4.0.26 PHP version:7.3.4

------------------------------------------ WORKERS ------------------------------------------

proto user worker listen processes status

tcp root webman http://0.0.0.0:8787 4 [OK]

tcp root monitor none 1 [OK]

---------------------------------------------------------------------------------------------

Press Ctrl+C to stop. Start success.

/www/wwwroot/webman/webman/app/view/user/hello.html update and reload