CodeIgniter-可选参数 [英] CodeIgniter - Optional parameters

问题描述

我正在构建我的第一个CodeIgniter应用程序，并且需要创建如下URL:

I'm building my first CodeIgniter application and I need to make URLs like follows:

controllername/{uf}/{city}

示例:/rj/rio-de-janeiro 这个例子应该给我两个参数:$ uf('rj')和$ city('rio-de-janeiro')

Example: /rj/rio-de-janeiro This example should give me 2 parameters: $uf ('rj') and $city ('rio-de-janeiro')

另一个网址可能是:

controllername/{uf}/{page}

示例:/rj/3 这个例子应该给我两个参数:$ uf('rj')和$ page(3)

Example: /rj/3 This example should give me 2 parameters: $uf ('rj') and $page (3)

换句话说，参数"city"和"page"是可选的. 我无法传递"/uf/city/page"之类的信息.我需要始终或城市"或页面". 但是我不知道如何在CodeIgniter配置中将这些路由配置为指向相同的方法(甚至指向不同的方法).

In other words, the parameters "city" and "page" are optionals. I can't pass something like '/uf/city/page'. I need always or 'city' OR 'page'. But I don't know how to configure these routes in CodeIgniter configuration to point to same method (or even to different methods).

推荐答案

我找到了正确的结果:

$route['controllername/(:any)/(:any)/(:num)'] = 'ddd/index/$1/$2/$3';
$route['controllername/(:any)/(:num)'] = 'ddd/index/$1/null/$2'; // try 'null' or '0' (zero)
$route['controllername/(:any)'] = 'ddd/index/$1';

Index方法(在"ControllerName"内部)应为:

The Index method (inside "ControllerName") should be:

public function Index($uf = '', $slug = '', $pag = 0)
{
    // some code...

    if (intval($pag) > 0)
    {
        // pagination
    }

    if (!empty($slug))
    {
        // slug manipulation
    }
}

希望它可以帮助某人. 谢谢大家.

Hope it helps someone. Thank you all.

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