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laravel如何获取路由参数

Jun 06, 2016 pm 08:07 PM
laravel

laravel获取路由参数的方法:1、按照URL中路由参数的先后顺序来获取;2、按照路由参数名称来获取;3、使用request()辅助函数来获取;4、使用Route Facade来获取。

laravel如何获取路由参数

laravel如何获取路由参数(Route Parameters)?下面本篇文章给大家介绍一下Laravel 获取路由参数的5种方法。有一定的参考价值,有需要的朋友可以参考一下,希望对大家有所帮助。

Laravel 获取 Route Parameters (路由参数) 的 5 种方法

Laravel 获取路由参数的方式有很多,并且有个小坑,汇总如下。

假设我们设置了一个路由参数:

/**
* 定义路由参数名称分别为: param1,param2
*/
Route::get('/{param1}/{param2}', 'TestController@index');
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现在我们访问 http://test.dev/1/2

在 TestController 中:

 /**
* 路由参数获取方法
*
* @param Illuminate\Http\Request $request    依赖注入 Request 实例,放在参数中什么位置都可以自动加载
* @param mixed $arg2    要获取的路由参数
* @param mixed $arg1    要获取的路由参数
*/
 
public function index(Request $request, $arg2, $arg1)
{
 
    /**
    * 方法一:按照 URL 中路由参数先后顺序来获取
    * 注意:此种方式有个小坑,获取的值只与顺序有关,与名称无关
    */
    echo $arg2;    //结果为 1 ,因为 $arg2 在第一位,获取的是第一个路由参数 param1 的值
    echo $arg1;    //结果为 2 ,因为 $arg1 在第二位,获取的是第二个路由参数 param2 的值
 
    /**
    * 方法二:按照路由参数名称来获取
    * 注意:此处名称是 Route 中定义的参数名,非上面方法中的参数名 
    */
    $request->route('param1');      //结果为 1 ,获取的是第一个路由参数
    $request->route('param2');      //结果为 2 ,获取的是第二个路由参数
 
    /**
    * 方法三:使用 request() 辅助函数来获取,效果同方法二
    */
    request()->route('param1');     //结果为 1 ,如果不带路由参数名则返回当前的Route对象
    request()->route('param2');     //结果为 2 ,如果不带路由参数名则返回当前的Route对象
 
    /**
    * 方法四:使用 Route Facade
    */
    \Route::input('param1');     //结果为 1 ,该方法必须带路由参数名
    \Route::input('param2');     //结果为 2 ,该方法必须带路由参数名
 
    /**
    * 方法五:使用 Illuminate\Http\Request 实例动态属性
    */
    $request->param1;   //结果为 1 ,Laravel 5.4+ 可用
    $request->param2;   //结果为 2 ,Laravel 5.4+ 可用
 
    // 或者
    request()->param1;   //结果为 1 ,Laravel 5.4+ 可用
    request()->param2;   //结果为 2 ,Laravel 5.4+ 可用
 
    //或者
    request('param1');   //结果为 1 ,Laravel 5.4+ 可用
    request('param2');   //结果为 2 ,Laravel 5.4+ 可用
 
    /**
    * 注意:Laravel 在处理动态属性的优先级是,先从请求的数据(POST/GET)中查找,没有的话再到路由参数中找。
    * 例如:URL : http://test.dev/1/2?param1=a&param2=b
    * $request->param1; request()->param1; request('param1');    //结果为 a
    * $request->param2; request()->param2; request('param2');    //结果为 b
    */
}
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