createdAt() public static méthode

public static createdAt ( )
 /**
  * Get a collection of the entity's invoices.
  *
  * @param  bool  $includePending
  * @param  array  $parameters
  * @return \Illuminate\Support\Collection
  */
 public function invoices($includePending = false, $parameters = [])
 {
     $invoices = [];
     $customer = $this->asBraintreeCustomer();
     $parameters = array_merge([TransactionSearch::customerId()->is($customer->id), TransactionSearch::createdAt()->between(Carbon::today()->subYears(2)->format('m/d/Y H:s'), Carbon::tomorrow()->format('m/d/Y H:s'))], $parameters);
     $transactions = BraintreeTransaction::search($parameters);
     // Here we will loop through the Braintree invoices and create our own custom Invoice
     // instance that gets more helper methods and is generally more convenient to work
     // work than the plain Braintree objects are. Then, we'll return the full array.
     if (!is_null($transactions)) {
         foreach ($transactions as $transaction) {
             if ($transaction->status == BraintreeTransaction::SETTLED || $includePending) {
                 $invoices[] = new Invoice($this, $transaction);
             }
         }
     }
     return new Collection($invoices);
 }
 /**
  * @return RangeNode
  */
 public function createdAt()
 {
     return TransactionSearch::createdAt();
 }
 public function test_rangeNode_createdAt_handlesUTCDateTimes()
 {
     $transaction = Braintree\Transaction::saleNoValidate(['amount' => '1000.00', 'creditCard' => ['cardholderName' => 'Pingu Penguin' . rand(), 'number' => '5105105105105100', 'expirationDate' => '05/12']]);
     $ten_min_ago = date_create("now -10 minutes", new DateTimeZone("UTC"));
     $ten_min_from_now = date_create("now +10 minutes", new DateTimeZone("UTC"));
     $collection = Braintree\Transaction::search([Braintree\TransactionSearch::id()->is($transaction->id), Braintree\TransactionSearch::createdAt()->between($ten_min_ago, $ten_min_from_now)]);
     $this->assertEquals(1, $collection->maximumCount());
     $this->assertEquals($transaction->id, $collection->firstItem()->id);
 }