Add the term "Repost" if the citation field was empty in the old site.

scripts/article_repost_term.php

@@ -0,0 +1,57 @@
+<?php
+
+use Drupal\node\Entity\node;
+use Drupal\taxonomy\Entity\Term;
+
+$term_name = 'Repost';
+
+$term = taxonomy_term_load_multiple_by_name($term_name, 'article_type');
+
+// Create the term if it does not exists and load it.
+if (empty($term)) {
+  $term = Term::create([
+    'name' => $term_name,
+    'vid' => 'article_type',
+  ])->save();
+  $term = taxonomy_term_load_multiple_by_name($term_name, 'article_type');
+}
+$term = current($term);
+
+// Add the term to all the entities that hasn't a value in the citation field.
+$query = \Drupal::entityQuery('node');
+$query->condition('type', 'article');
+$entity_ids = $query->execute();
+$db = \Drupal::database();
+$query = $db->query("
+  SELECT 
+    n.nid 
+  FROM  
+    drupal7.node as n 
+  LEFT JOIN 
+    drupal7.field_data_field_citiations as  fdfc 
+  ON 
+    (n.nid = fdfc.entity_id)   
+  WHERE n.type = 'story' 
+  AND 
+  fdfc.field_citiations_value IS null;"
+);
+$entity_ids = $query->fetchAll(PDO::FETCH_ASSOC);
+foreach ($entity_ids as $entity) {
+  $entity =  Node::load($entity['nid']);
+  $entity_terms = $entity->get('field_article_type')->getValue();
+
+  // Check if the entity hasn't the term already.
+  $add_term = TRUE;
+  foreach ($entity_terms as $term_node) {
+    if ($term_node['target_id'] == $term->id()) {
+      $add_term = FALSE;
+    }
+  }
+  if ($add_term == TRUE) {
+    $entity_terms = array_merge($entity->get('field_article_type')->getValue(), [['target_id' => $term->id()]]);
+    $entity->set('field_article_type', $entity_terms);
+    $entity->save();
+  }
+
+}
+