Automatically determining the current tenant

At the start of each request, the package will try to determine which tenant should be active for the current request. The package ships with a class named DomainTenantFinder that will try to find a Tenant whose domain attribute matches with the hostname of the current request.

In the multitenancy config file, you specify the tenant finder in the tenant_finder key.

// in multitenancy.php
/*
 * This class is responsible for determining which tenant should be current
 * for the given request.
 *
 * This class should extend `Spatie\Multitenancy\TenantFinder\TenantFinder`
 *
 */
'tenant_finder' => Spatie\Multitenancy\TenantFinder\DomainTenantFinder::class,

If there is a tenant returned by the tenant finder, all configured tasks will be performed on it. After that, the tenant instance will be bound in the container using the currentTenant key.

app('currentTenant') // will return the current tenant or `null`

You can create a tenant finder of your own. A valid tenant finder is any class that extends Spatie\Multitenancy\TenantFinder\TenantFinder. You must implement this abstract method:

abstract public function findForRequest(Request $request): ?IsTenant;

Here's how the default DomainTenantFinder is implemented. The getTenantModel returns an instance of the class specified in the tenant_model key of the multitenancy config file.

namespace Spatie\Multitenancy\TenantFinder;

use Illuminate\Http\Request;
use Spatie\Multitenancy\Contracts\IsTenant;

class DomainTenantFinder extends TenantFinder
{
    public function findForRequest(Request $request): ?IsTenant
    {
        $host = $request->getHost();

        return app(IsTenant::class)::whereDomain($host)->first();
    }
}