Laravel은 테마를 동적으로 설정합니다.

public/
└── themes/
    ├── theme_1/
    │   ├── css/
    │   ├── js/
    │   └── images/
    └── theme_2/
        ├── css/
        ├── js/
        └── images/

// 主题切换路由
Route::get('/theme/{name}', function ($name) {
    // 将主题名称保存到 Session 或 Cookie 中
    if (request()->hasCookie('theme')) {
        return response()->cookie('theme', $name);
    } else {
        session(['theme' => $name]);
    }
    return redirect()->back();
});

namespace AppHttpMiddleware;

use Closure;
use IlluminateSupportFacadesCookie;
use IlluminateSupportFacadesStorage;

class LoadTheme
{
    /**
     * Handle an incoming request.
     *
     * @param  IlluminateHttpRequest  $request
     * @param  Closure  $next
     * @return mixed
     */
    public function handle($request, Closure $next)
    {
        // 检查 Session 或 Cookie 中是否存在 theme 选项
        if ($request->session()->has('theme')) {
            $theme = $request->session()->get('theme');
        } elseif ($request->hasCookie('theme')) {
            $theme = $request->cookie('theme');
        } else {
            $theme = 'default';
        }

        // 尝试加载主题 CSS 文件
        $css = public_path(sprintf('themes/%s/css/%s.css', $theme, $theme));
        if (file_exists($css)) {
            $css = asset(sprintf('themes/%s/css/%s.css', $theme, $theme));
            echo '<link rel="stylesheet" href="'.$css.'">';
        }

        // 尝试加载主题 JS 文件
        $js = public_path(sprintf('themes/%s/js/%s.js', $theme, $theme));
        if (file_exists($js)) {
            $js = asset(sprintf('themes/%s/js/%s.js', $theme, $theme));
            echo '<script src="'.$js.'"></script>';
        }

        // 尝试加载主题图片文件
        $image_path = public_path(sprintf('themes/%s/images/', $theme));
        if (is_dir($image_path)) {
            Storage::disk('public')->makeDirectory(sprintf('themes/%s/images/', $theme));
        }
        $images = Storage::disk('public')->files(sprintf('themes/%s/images/', $theme));
        foreach ($images as $image) {
            $image_url = Storage::disk('public')->url($image);
            echo '<img src="'.$image_url.'">';
        }

        return $next($request);
    }
}

// 注册全局中间件
// 在 app/Http/Kernel.php 中找到 $middlewareGroups 数组，加入中间件
'web' => [
    AppHttpMiddlewareLoadTheme::class,
    // 其它中间件
],