Capturing Route Parameters and Query String Parameters Simultaneously in Laravel

The article explains how Laravel can capture route parameters defined in the URL as well as additional query‑string parameters in a single controller method.

Capturing route parameters : Define a route such as Route::get('post/{id}', 'PostController@content'); and retrieve the parameter in the controller with:

class PostController extends Controller
{
    public function content($id)
    {
        // $id contains the value from the URL
    }
}

Capturing both route and query‑string parameters : For a request like http://example.com.cn/post/1?from=index, inject the Request object before the route parameter:

namespace App\Http\Controllers;
use Illuminate\Http\Request;

class PostController extends Controller
{
    public function content(Request $request, $id)
    {
        $from = $request->get('from'); // retrieves the query‑string value
    }
}

Optional parameters : Laravel routes can include several optional segments, e.g.:

Route::get('/article/{id}/{source?}/{medium?}/{campaign?}', 'ArticleController@detail');

In the controller, define default values for the optional parameters:

public function detail(Request $request, $id, $source = '', $medium = '', $campaign = '')
{
    // $source, $medium, $campaign receive values if present in the URL
}

An example URL with optional parameters is

http://example.com.cn/article/1/wx/h5?param1=val1&param2=val2

, where "wx" maps to $source and "h5" maps to $medium.