fix: batch requesting RequestInterface

[gbretas]

This error causing the batch add requesting an Psr\Http\Message\RequestInterface;. But this is an error.

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[devstack-be]

I have the same problem and I have not yet managed to use the batch on the google calendar api.

Google\Http\Batch::add(): Argument #1 ($request) must be of type Psr\Http\Message\RequestInterface, Google\Service\Calendar\Event given, called in...

[devstack-be]

I fix my problem. @gbretas You need to add thoses lines:

            $this->httpClient->setDefer(true);
            $calendarService = new CalendarService($this->httpClient);
            $calendarService->getClient()->setUseBatch(true);
            $batch = $calendarService->createBatch();

...
                $request = $calendarService->events->insert(YOUR_CALENDAR_ID, $event);
                $requestId = YOUR_REQUEST_ID
                $batch->add($request, $requestId);
            try {
                $results = $batch->execute();
            }
            catch (Exception $e ){
                Log::info($e->getMessage());
            }

[bshaffer]

@gbretas see @devstack-be's comment above, or see the batch example in examples/batch.php:

https://github.com/googleapis/google-api-php-client/blob/017400f609c1fb71ab5ad824c50eabd4c3eaf779/examples/batch.php#L54-L78

The proper usage is to pass the RequestInterface object after calling the method in batch-mode. The typehint we have there is correct.