public function BatchExampleForm::generateBatch1 in Examples for Developers 8

Same name and namespace in other branches

1. 3.x modules/batch_example/src/Form/BatchExampleForm.php \Drupal\batch_example\Form\BatchExampleForm::generateBatch1()

Generate Batch 1.

Batch 1 will process one item at a time.

This creates an operations array defining what batch 1 should do, including what it should do when it's finished. In this case, each operation is the same and by chance even has the same $nid to operate on, but we could have a mix of different types of operations in the operations array.

1 call to BatchExampleForm::generateBatch1()

BatchExampleForm::submitForm in batch_example/src/Form/BatchExampleForm.php

Form submission handler.

File

batch_example/src/Form/BatchExampleForm.php, line 76

Class

BatchExampleForm

Form with examples on how to use cache.

Namespace

Drupal\batch_example\Form

Code

public function generateBatch1() {
  $num_operations = 1000;
  $this
    ->messenger()
    ->addMessage($this
    ->t('Creating an array of @num operations', [
    '@num' => $num_operations,
  ]));
  $operations = [];

  // Set up an operations array with 1000 elements, each doing function
  // batch_example_op_1.
  // Each operation in the operations array means at least one new HTTP
  // request, running Drupal from scratch to accomplish the operation. If the
  // operation returns with $context['finished'] != TRUE, then it will be
  // called again.
  // In this example, $context['finished'] is always TRUE.
  for ($i = 0; $i < $num_operations; $i++) {

    // Each operation is an array consisting of
    // - The function to call.
    // - An array of arguments to that function.
    $operations[] = [
      'batch_example_op_1',
      [
        $i + 1,
        $this
          ->t('(Operation @operation)', [
          '@operation' => $i,
        ]),
      ],
    ];
  }
  $batch = [
    'title' => $this
      ->t('Creating an array of @num operations', [
      '@num' => $num_operations,
    ]),
    'operations' => $operations,
    'finished' => 'batch_example_finished',
  ];
  return $batch;
}