Set custom header for any response

Why you want to send this for every views ? Why only views ?

But you can achieve this with response macro :

public function boot(ResponseFactory $factory)
{
    $factory->macro('nocache', function ($view_name, view_data = []) use ($factory) {

        $content = view($view_name, $view_data);

        return response($content)->header('Cache-Control', 'no-cache, must-revalidate');

    });
}

Then use response()->nocache('view.name', ['foo' => $bar]) everywhere instead of view('view.name', ['foo' => $bar]).

Looks promising. Where would I paste that code in?

1. create the file \App\Http\Middleware\NoCache.php

<?php

namespace App\Http\Middleware;

use Closure;

class NoCache
{
    public function handle($request, Closure $next)
    {
        $response = $next($request);

        $response->header('Cache-Control', 'no-cache, must-revalidate');

        return $response;
    }
}

2. Open \App\Http\Kernel.php and add to $middleware if you want it on all

 \App\Http\Middleware\NoCache::class,

or define the key to pick and choose.

'nocache' => \App\Http\Middleware\NoCache::class,

Done.

The middleware will put this for all responses not only views.

Again I'm curious to know why you want to do this. Maybe you're missing something.

@raphael as @pmall has mentioned this is all responses.

If you wanted to say narrow it down to just responses formed from views then you'll need to obviously check before slapping the header on everything.

<?php

namespace App\Http\Middleware;

use Closure;
use Illuminate\Http\Response;
use Illuminate\View\View;

class NoCache
{
    public function handle($request, Closure $next)
    {
        $response = $next($request);

        if ($response instanceof Response and $response->getOriginalContent() instanceof View)
        {
           $response->header('Cache-Control', 'no-cache, must-revalidate');
        }

        return $response;
    }
}