field_test.module

<?php

use Drupal\Core\Entity\EntityInterface;
use Drupal\field\FieldConfigInterface;

/**
 * @file
 * Helper module for the Field API tests.
 *
 * The module defines
 * - an entity type (field_test.entity.inc)
 * - a field type and its formatters and widgets (field_test.field.inc)
 * - a field storage backend (field_test.storage.inc)
 *
 * The main field_test.module file implements generic hooks and provides some
 * test helper functions
 */

require_once __DIR__ . '/field_test.entity.inc';
require_once __DIR__ . '/field_test.field.inc';

/**
 * Implements hook_permission().
 */
function field_test_permission() {
  $perms = array(
    'view test_view_field content' => array(
      'title' => t('View test field content'),
      'description' => t('View published test_view_field content.'),
    ),
    'administer field_test content' => array(
      'title' => t('Administer field_test content'),
      'description' => t('Manage field_test content'),
    ),
  );
  return $perms;
}

/**
 * Implements hook_menu().
 */
function field_test_menu() {
  $items = array();
  $items['test-entity/nested/%entity_test/%entity_test'] = array(
    'title' => 'Nested entity form',
    'route_name' => 'field_test.entity_nested_form',
  );

  return $items;
}

/**
 * Store and retrieve keyed data for later verification by unit tests.
 *
 * This function is a simple in-memory key-value store with the
 * distinction that it stores all values for a given key instead of
 * just the most recently set value. field_test module hooks call
 * this function to record their arguments, keyed by hook name. The
 * unit tests later call this function to verify that the correct
 * hooks were called and were passed the correct arguments.
 *
 * This function ignores all calls until the first time it is called
 * with $key of NULL. Each time it is called with $key of NULL, it
 * erases all previously stored data from its internal cache, but also
 * returns the previously stored data to the caller. A typical usage
 * scenario is:
 *
 * @code
 *   // calls to field_test_memorize() here are ignored
 *
 *   // turn on memorization
 *   field_test_memorize();
 *
 *   // call some Field API functions that invoke field_test hooks
 *   entity_create('field_config', $field_definition)->save();
 *
 *   // retrieve and reset the memorized hook call data
 *   $mem = field_test_memorize();
 *
 *   // make sure hook_field_config_create() is invoked correctly
 *   assertEqual(count($mem['field_test_field_config_create']), 1);
 *   assertEqual($mem['field_test_field_config_create'][0], array($field));
 * @endcode
 *
 * @param $key
 *   The key under which to store to $value, or NULL as described above.
 * @param $value
 *   A value to store for $key.
 * @return
 *   An array mapping each $key to an array of each $value passed in
 *   for that key.
 */
function field_test_memorize($key = NULL, $value = NULL) {
  $memorize = &drupal_static(__FUNCTION__, NULL);

  if (!isset($key)) {
    $return = $memorize;
    $memorize = array();
    return $return;
  }
  if (is_array($memorize)) {
    $memorize[$key][] = $value;
  }
}

/**
 * Memorize calls to field_test_field_config_create() for field creation.
 */
function field_test_field_config_create(FieldConfigInterface $field) {
  $args = func_get_args();
  field_test_memorize(__FUNCTION__, $args);
}

/**
 * Implements hook_entity_display_build_alter().
 */
function field_test_entity_display_build_alter(&$output, $context) {
  $display_options = $context['display']->getComponent('test_field');
  if (isset($display_options['settings']['alter'])) {
    $output['test_field'][] = array('#markup' => 'field_test_entity_display_build_alter');
  }

  if (isset($output['test_field'])) {
    $output['test_field'][] = array('#markup' => 'entity language is ' . $context['entity']->language()->id);
  }
}

/**
 * Implements hook_field_widget_form_alter().
 */
function field_test_field_widget_form_alter(&$element, &$form_state, $context) {
  $field_definition = $context['items']->getFieldDefinition();
  switch ($field_definition->getName()) {
    case 'alter_test_text':
      drupal_set_message('Field size: ' . $context['widget']->getSetting('size'));
      break;

    case 'alter_test_options':
      drupal_set_message('Widget type: ' . $context['widget']->getPluginId());
      break;
  }
  // Set a message if this is for the form displayed to set default value for
  // the field instance.
  if ($context['default']) {
    drupal_set_message('From hook_field_widget_form_alter(): Default form is true.');
  }
}

/**
 * Implements hook_query_TAG_alter() for tag 'efq_table_prefixing_test'.
 *
 * @see \Drupal\system\Tests\Entity\EntityFieldQueryTest::testTablePrefixing()
 */
function field_test_query_efq_table_prefixing_test_alter(&$query) {
  // Add an additional join onto the entity base table. This will cause an
  // exception if the EFQ does not properly prefix the base table.
  $query->join('entity_test','et2','%alias.id = entity_test.id');
}


/**
 * Implements hook_query_TAG_alter() for tag 'efq_metadata_test'.
 *
 * @see \Drupal\system\Tests\Entity\EntityQueryTest::testMetaData()
 */
function field_test_query_efq_metadata_test_alter(&$query) {
  global $efq_test_metadata;
  $efq_test_metadata = $query->getMetadata('foo');
}

/**
 * Implements hook_field_widget_settings_form_alter().
 */
function field_test_field_widget_settings_form_alter(&$element, &$form_state, $context) {
  $element['field_test_widget_settings_form_alter'] = array(
    '#type' => 'textfield',
    '#title' => t('Widget settings form alter'),
    '#default_value' => $context['widget']->getSetting('field_test_widget_settings_form_alter'),
  );
}

/**
 * Implements hook_field_widget_settings_summary_alter().
 */
function field_test_field_widget_settings_summary_alter(&$summary, $context) {
  $summary[] = 'field_test_field_widget_settings_summary_alter';
  return $summary;
}

/**
 * Implements hook_field_formatter_settings_form_alter().
 */
function field_test_field_formatter_settings_form_alter(&$element, &$form_state, $context) {
  $element['field_test_formatter_settings_form_alter'] = array(
    '#type' => 'textfield',
    '#title' => t('Formatter settings form alter'),
    '#default_value' => $context['formatter']->getSetting('field_test_formatter_settings_form_alter'),
  );
}

/**
 * Implements hook_field_formatter_settings_summary_alter().
 */
function field_test_field_formatter_settings_summary_alter(&$summary, $context) {
  $summary[] = 'field_test_field_formatter_settings_summary_alter';
  return $summary;
}

/**
 * Implements hook_field_extra_fields_alter().
 */
function field_test_field_extra_fields_alter(&$info) {
  // Remove all extra fields from the 'no_fields' content type;
  unset($info['node']['no_fields']);
}