agaric/migration_helpers
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migration_helpers.module
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@ -1,7 +1,5 @@
<?php
use Psr\Log\LogLevel;
/**
* Entity query helper.
*/
@ -40,69 +38,28 @@ function migration_helpers_entity_query(
* Move (and optionally filter/transform) terms between term reference fields.
*/
function migration_helpers_move_terms(
$source_vocabulary,
$destination_vocabulary,
$source_field,
$destination_field,
$bundle = NULL,
$entity_type = 'node',
$source_bundle,
$destination_bundle = NULL,
$source_entity_type = 'node',
$destination_entity_type = 'node',
$mapping = [],
) {
/** @var \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager */
$entity_type_manager = \Drupal::service('entity_type.manager');
// Get any existing terms in destination vocabulary so we can efficiently
// prevent duplication.
$terms = migration_helpers_entity_query(
entity_type: 'taxonomy_term',
bundle: $destination_vocabulary,
);
$term_data = [];
foreach ($terms as $term) {
$term_data[$term->id()] = $term->label();
}
$nodes = migration_helpers_entity_query($entity_type, $bundle, $source_field);
foreach ($nodes as $node) {
$tids = [];
/** @var \Drupal\node\NodeInterface $node */
$orig_values = $node->get($source_field);
foreach ($orig_values as $orig_value) {
$orig_tid = $orig_value->target_id;
$orig_term = $entity_type_manager->getStorage('taxonomy_term')->load($orig_tid);
$orig = $orig_term->name->value;
$term_name = $mapping[$orig] ?? $orig;
// If our map intentionally blanked out the term name, do not create
// a term in the new vocabulary and assign it to the destination field.
// Note, the term must be blanked out ('') or assigned to FALSE in the
// mapping, setting a term to NULL is the same as not mapping it, and it
// would be created in the new vocab etc.
if (!$term_name) {
continue;
}
$tid = array_search($term_name, $term_data);
if (empty($tid)) {
$new_term = $entity_type_manager->getStorage('taxonomy_term')->create([
'name' => $term_name,
'vid' => $destination_vocabulary,
]);
$new_term->save();
$tid = $new_term->id();
\Drupal::logger('mass')->log(LogLevel::INFO, "Term $term_name created with TID $tid in vocabulary $destination_vocabulary.");
}
$tids[] = $tid;
}
// Now we have collected all the term IDs that have been created.
// We have to go through a surprising number of hoops to make our
$already_there_tids = [];
$already_there_values = $node->get($destination_field);
foreach ($already_there_values as $already_there_value) {
$already_there_tids[] = $already_there_value->target_id;
}
$node->set($destination_field, array_merge($tids, $already_there_tids));
$node->save();
}
// Destination bundle is also required but we default to making it
// the same as the source bundle.
$destination_bundle ??= $source_bundle;
print("
$source_entity_type,
$source_bundle,
$source_field,
$destination_entity_type,
$destination_bundle,
$destination_field,
$source_vocabulary,
$destination_vocabulary");
}
// The below almost serve more as examples that can be followed