UndefinedFunctionException:尝试从名称空间Controller调用函数

时间:2014-01-15 07:20:44

标签: php symfony

我正在尝试使用this code snipp from scott应用安全令牌,但我似乎无法在symfony2中解决这个问题,这是我的代码:

<?php

namespace Acme\UserManagementBundle\Controller;
use Symfony\Bundle\FrameworkBundle\Controller\Controller;
use Symfony\Component\HttpFoundation\Response;

class TokenController extends Controller
{

    public function randSecureAction($min, $max) {
        $range = $max - $min;
        if ($range < 0) return $min; // not so random...
        $log = log($range, 2);
        $bytes = (int) ($log / 8) + 1; // length in bytes
        $bits = (int) $log + 1; // length in bits
        $filter = (int) (1 << $bits) - 1; // set all lower bits to 1

        do {
            $rnd = hexdec(bin2hex(openssl_random_pseudo_bytes($bytes)));
            $rnd = $rnd & $filter; // discard irrelevant bits
        } while ($rnd >= $range);

        return new Response ($min + $rnd);
    }

    public function getTokenAction($length=32) {
        $token = "";
        $codeAlphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
        $codeAlphabet.= "abcdefghijklmnopqrstuvwxyz";
        $codeAlphabet.= "0123456789";

        for($i=0;$i<$length;$i++) {
            $token .= $codeAlphabet[randSecureAction(0,strlen($codeAlphabet))];
        }
        return new Response ($token);
    }

}

我将此TokenController创建为this之类的服务,因此我可以将其调用到我的DefaultController,现在服务无法调用此控制器内的其他函数,我做错了还是有一个我的代码中的问题是因为里面的函数(getTokenAction)似乎在TokenController类中使用了其他函数(randSecureAction)。

2 个答案:

答案 0 :(得分:3)

getTokenAction内你有一行:

$token .= $codeAlphabet[randSecureAction(0,strlen($codeAlphabet))];

这是您的问题,您必须使用$this->randSecureAction(...)。所以试试

$token .= $codeAlphabet[$this->randSecureAction(0,strlen($codeAlphabet))];

答案 1 :(得分:0)

service是一个php 对象。所以你需要把它改成

$this->randSecureAction(0,strlen($codeAlphabet))

也使用Response对象来响应,而不是返回。

并且个人更喜欢在动作函数结束时使用Action字。

所以最终的代码应该是这样的

namespace Acme\DemoBundle\Controller;

use Symfony\Bundle\FrameworkBundle\Controller\Controller;

class TokenController extends Controller {

    public function randSecure($min, $max) {
        $range = $max - $min;
        if ($range < 0)
            return $min; // not so random...
        $log = log($range, 2);
        $bytes = (int) ($log / 8) + 1; // length in bytes
        $bits = (int) $log + 1; // length in bits
        $filter = (int) (1 << $bits) - 1; // set all lower bits to 1
        do {
            $rnd = hexdec(bin2hex(openssl_random_pseudo_bytes($bytes)));
            $rnd = $rnd & $filter; // discard irrelevant bits
        } while ($rnd >= $range);
        return $min + $rnd;
    }

    public function getToken($length = 32) {
        $token = "";
        $codeAlphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
        $codeAlphabet.= "abcdefghijklmnopqrstuvwxyz";
        $codeAlphabet.= "0123456789";
        for ($i = 0; $i < $length; $i++) {            
             $token .= $codeAlphabet[$this->randSecure(0, strlen($codeAlphabet))];
        }
        return $token;
    }

}

并定义为服务:

    <parameters>
        <parameter key="acme.controller.token.class">Acme\DemoBundle\Controller\TokenController</parameter>
    </parameters>

    <services>
        <service id="acme.token.controller" class="%acme.controller.token.class%" />        
    </services>

和用法:

public function helloAction($name) {

    $token = $this->get('acme.token.controller')->getToken();

}