Creating your own task

A task is any class that implements Spatie\Multitenancy\Tasks\SwitchTenantTask. Here is how that interface looks like.

namespace Spatie\Multitenancy\Tasks;

use Spatie\Multitenancy\Models\Tenant;

interface SwitchTenantTask
{
    public function makeCurrent(Tenant $tenant): void;

    public function forgetCurrent(): void;
}

The makeCurrent function will be called when making a tenant current. A common thing to do would be to dynamically change some configuration values.

forgetCurrent will be called when forgetting a tenant. This function should restore the original environment. An important thing to note is that SwitchTenantTask are singletons, so you could store the original values as a property and reach for them later.

Here is an example implementation where we are going to use a prefix when a tenant is current, and clear out that prefix when forgetting the tenant.

namespace Spatie\Multitenancy\Tasks;

use Spatie\Multitenancy\Models\Tenant;

class PrefixCacheTask implements SwitchTenantTask
{
    public function __construct(protected ?string $originalPrefix = null)
    {
        $this->originalPrefix ??= config('cache.prefix');
    }

    public function makeCurrent(Tenant $tenant): void
    {
        $this->setCachePrefix("tenant_{$tenant->id}");
    }

    public function forgetCurrent(): void
    {
        $this->setCachePrefix($this->originalPrefix);
    }

    protected function setCachePrefix(string $prefix): void
    {
        config()->set('cache.prefix', $prefix);

        $storeName = config('cache.default');

        app('cache')->forgetDriver($storeName);
    }
}

##Registering a task

After creating a task, you must register it by putting its class name in the switch_tenant_tasks key of the multitenancy config file.

##Accepting parameters

Classes that implement SwitchTenantTask can accept parameters from the multitenancy config file.

'switch_tenant_tasks' => [
    \App\Support\SwitchTenantTasks\YourTask::class => ['name' => 'value', 'anotherName' => 'value'],
    // other tasks
],

In your task you can accept these parameters via the constructor. Make sure the parameter names matches those used in the config file.

namespace App\Support\SwitchTenantTasks\YourTask

use Spatie\Multitenancy\Tasks\SwitchTenantTask;

class SwitchTenantDatabaseTask implements SwitchTenantTask
{
    public function __construct(string $name, string $anotherName)
    { 
        // do something
    }
}

You can also use the construct to inject dependencies. Just make sure the variable name does not conflict with one of the parameter names in the config file.

namespace App\Support\SwitchTenantTasks\YourTask

use Spatie\Multitenancy\Tasks\SwitchTenantTask;

class SwitchTenantDatabaseTask implements SwitchTenantTask
{
    public function __construct(string $name, string $anotherName, MyDepencency $myDependency)
    { 
        // do something
    }
}