Tenant switcher

[vpratfr]

I don't really have the time to submit a proper PR, but here is what it takes to make a tenant switcher for Nova.

My use cas is the following:

• Product landing page at http://example.com
• Admin interface at http://admin.example.com (one particular tenant)
• Tenants at http://xyz.example.com
• Nova is plugged only on the admin tenant. This means http://admin.example.com/nova will work, but http://xyz.example.com/nova will 404.

I needed that:

• Nova only shows "system" resources when viewing the admin tenant
• Nova only shows "tenant" resources when virtually switched to a client tenant

New Middleware

namespace App\Nova\Middleware;

use Closure;
use Domain\CustomerAccounts\Models\Website;
use Hyn\Tenancy\Environment;

class TenantSwitcherMiddleware
{

    /** @var \Hyn\Tenancy\Environment */
    private $environment;

    public function __construct(Environment $environment)
    {
        $this->environment = $environment;
    }

    public function handle($request, Closure $next)
    {
        $currentTenant = Website::find(session()->get('nova.tenant', 0))
                         ?? Website::whereUuid(Website::ADMIN_TENANT_UUID)->first();

        $this->environment->tenant($currentTenant);
        $this->environment->hostname($currentTenant->hostname);
        
        config()->set('tenancy.hostname.auto-identification', false);

        return $next($request);
    }
}

New view for the switcher dropdown

Create a new file resources/views/vendor/nova/partials/tenant-switcher.blade.php

@php($currentWebsite = app(Hyn\Tenancy\Environment::class)->website())
@php($websites =  Domain\CustomerAccounts\Models\Website::get())

<dropdown-trigger class="h-9 flex items-center" slot-scope="{toggle}" :handle-click="toggle">
    <span class="text-90">
        @if($currentWebsite->is_admin_tenant)
            Switch tenant...
        @else
            {{-- We have an extra customer table for billing, could use hostname->first()->fqdn instead of customer->name --}}
            {{ $currentWebsite->customer->name ?? $currentWebsite->uuid }}
        @endif
    </span>
</dropdown-trigger>

<dropdown-menu slot="menu" width="200" direction="rtl">
    <ul class="list-reset">
        <li>
            <a href="{{ route('web.nova.tenant.switch') }}" class="block no-underline text-90 hover:bg-30 p-3">
                Admin tenant
            </a>
        </li>
        @foreach($websites->reject->is_admin_tenant as $website)
        <li>
            <a href="{{ route('web.nova.tenant.switch', $website) }}" class="block no-underline text-90 hover:bg-30 p-3">
                {{ $website->customer->name ?? $website->uuid }} 
            </a>
        </li>
        @endforeach
    </ul>
</dropdown-menu>

New controller to make the switch

namespace App\Nova\Web\Controllers;

use App\Shared\Http\Controllers\Controller;
use Domain\CustomerAccounts\Models\Website;
use Illuminate\Http\Request;

class TenantController extends Controller
{
    public function switchTo(Request $request, ?Website $website = null)
    {
        session()->put('nova.tenant', $website->id ?? 0);
        return \redirect()->back();
    }
}

New route to that controller

You should add that route so that it is only accessible to the admin middleware. We have automatted

Route::domain('admin.' . env('APP_DOMAIN'))->prefix('/nova')->group(function () {
    Route::get('/switch-tenant/{website?}')->name('tenant.switch')->uses([TenantController::class, 'switchTo']);
});

Nova configuration

Add our manual tenant switcher middleware as last item in the nova configuration entry: nova.middleware

Nova layout

We need to change the Nova default layout in order to include our tenant switcher dropdown in the top bar.

Copy vendor/laravel/nova/resources/views/layout.blade.php to resources/views/vendor/nova/layout.blade.php

Then you can replace:

<dropdown class="ml-auto h-9 flex items-center dropdown-right">
    @include('nova::partials.user')
</dropdown>

with

<div class="ml-auto flex">
    <dropdown class="h-9 items-center dropdown-right">
        @include('nova::partials.tenant-switcher')
    </dropdown>

    <dropdown class="h-9 ml-6 items-center dropdown-right">
        @include('nova::partials.user')
    </dropdown>
</div>

[bkintanar]

@vpratfr I've tried this and it is working with few modifications. Are you willing to create a PR for this or are you ok for me to proceed with this and use your approach?

[vpratfr]

Sure. Go ahead.