自动将域参数添加到所有子路由

Question

I'm trying to make it so that I can have all routes inside of a group automatically use a domain parameter without having to specify it in views and whatnot. Here is an example of what I am looking for.

Route group code:

Route::group(['domain' => '{tenant_domain}.myapp.com', 'middleware' => 'tenant'], function () {

The tenant middleware handle:

public function handle($request, $next)
{
    session(['tenant_domain' => $request->route('tenant_domain')]);

    return $next($request);
}

So instead of having to use this code in all my views:

{{ route('login', ['tenant_domain' => session('tenant_domain')]) }}

I'd like to only use:

{{ route('login') }}

And then in the boot() method of RouteServiceProvider, have something like:

public function boot()
{
    if (isset(session('my_parameter'))) {
        Route::addParameter(['tenant_domain' => session('tenant_domain')]);
    }

    parent::boot();
}

How can I do this properly so it works?

Answer 1

Not sure if you automatically bind it to a route. However you can overwrite all Laravel helpers because it is checked if they exist before they are defined:

if (! function_exists('route')) { //etc }}

So you could rewrite the route function (originally located in Illuminate/Foundation/helpers.php with something like this:

/**
* Generate the URL to a named route.
*
* @param  string  $name
* @param  array   $parameters
* @param  bool    $absolute
* @return string
*/
function route($name, $parameters = [], $absolute = true)
{
    if (session()->has('tenant_domain'))) {
        $parameters = array_prepend($parameters, session()->get('tenant_domain'));
    }
    return app('url')->route($name, $parameters, $absolute);
} 

You can find how to add a custom helper in this thread.