more migrations

.docksal/docksal.env

@@ -1,6 +1,6 @@
 DOCKSAL_STACK=default
 DOCROOT=docroot
-XDEBUG_ENABLED=0
+XDEBUG_ENABLED=1
 DATABASE_NAME=default
 DATABASE_USERNAME=user
 DATABASE_PASSWORD=user

.vscode/launch.json

@@ -0,0 +1,28 @@
+{
+  // Use IntelliSense to learn about possible attributes.
+  // Hover to view descriptions of existing attributes.
+  // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+  "version": "0.2.0",
+  "configurations": [
+    {
+      "name": "Listen for XDebug",
+      "type": "php",
+      "request": "launch",
+      "port": 9000,
+      "pathMappings": {
+        "/var/www/": "${workspaceRoot}"
+      }
+    },
+    {
+      "name": "Launch currently open script",
+      "type": "php",
+      "request": "launch",
+      "program": "${file}",
+      "cwd": "${fileDirname}",
+      "port": 9000,
+      "pathMappings": {
+        "/var/www/": "${workspaceRoot}"
+      }
+    }
+  ]
+}

config/default/default/core.entity_form_display.node.should_have_been_page.default.yml

@@ -0,0 +1,77 @@
+uuid: 421c9fe9-7f0e-40cf-bd03-5473ed8727be
+langcode: en
+status: true
+dependencies:
+  config:
+    - field.field.node.should_have_been_page.body
+    - node.type.should_have_been_page
+  module:
+    - path
+    - text
+id: node.should_have_been_page.default
+targetEntityType: node
+bundle: should_have_been_page
+mode: default
+content:
+  body:
+    type: text_textarea_with_summary
+    weight: 121
+    settings:
+      rows: 9
+      summary_rows: 3
+      placeholder: ''
+      show_summary: false
+    third_party_settings: {  }
+    region: content
+  created:
+    type: datetime_timestamp
+    weight: 10
+    region: content
+    settings: {  }
+    third_party_settings: {  }
+  path:
+    type: path
+    weight: 30
+    region: content
+    settings: {  }
+    third_party_settings: {  }
+  promote:
+    type: boolean_checkbox
+    settings:
+      display_label: true
+    weight: 15
+    region: content
+    third_party_settings: {  }
+  status:
+    type: boolean_checkbox
+    settings:
+      display_label: true
+    weight: 120
+    region: content
+    third_party_settings: {  }
+  sticky:
+    type: boolean_checkbox
+    settings:
+      display_label: true
+    weight: 16
+    region: content
+    third_party_settings: {  }
+  title:
+    type: string_textfield
+    weight: -5
+    region: content
+    settings:
+      size: 60
+      placeholder: ''
+    third_party_settings: {  }
+  uid:
+    type: entity_reference_autocomplete
+    weight: 5
+    settings:
+      match_operator: CONTAINS
+      size: 60
+      placeholder: ''
+      match_limit: 10
+    region: content
+    third_party_settings: {  }
+hidden: {  }

config/default/default/core.entity_form_display.node.test_paragraphs.default.yml

@@ -0,0 +1,79 @@
+uuid: 0b3363a7-1856-41e2-8d60-baff967b4079
+langcode: en
+status: true
+dependencies:
+  config:
+    - field.field.node.test_paragraphs.field_content
+    - node.type.test_paragraphs
+  module:
+    - paragraphs
+    - path
+id: node.test_paragraphs.default
+targetEntityType: node
+bundle: test_paragraphs
+mode: default
+content:
+  created:
+    type: datetime_timestamp
+    weight: 10
+    region: content
+    settings: {  }
+    third_party_settings: {  }
+  field_content:
+    type: entity_reference_paragraphs
+    weight: 121
+    settings:
+      title: Paragraph
+      title_plural: Paragraphs
+      edit_mode: open
+      add_mode: dropdown
+      form_display_mode: default
+      default_paragraph_type: ''
+    third_party_settings: {  }
+    region: content
+  path:
+    type: path
+    weight: 30
+    region: content
+    settings: {  }
+    third_party_settings: {  }
+  promote:
+    type: boolean_checkbox
+    settings:
+      display_label: true
+    weight: 15
+    region: content
+    third_party_settings: {  }
+  status:
+    type: boolean_checkbox
+    settings:
+      display_label: true
+    weight: 120
+    region: content
+    third_party_settings: {  }
+  sticky:
+    type: boolean_checkbox
+    settings:
+      display_label: true
+    weight: 16
+    region: content
+    third_party_settings: {  }
+  title:
+    type: string_textfield
+    weight: -5
+    region: content
+    settings:
+      size: 60
+      placeholder: ''
+    third_party_settings: {  }
+  uid:
+    type: entity_reference_autocomplete
+    weight: 5
+    settings:
+      match_operator: CONTAINS
+      size: 60
+      placeholder: ''
+      match_limit: 10
+    region: content
+    third_party_settings: {  }
+hidden: {  }

config/default/default/core.entity_form_display.paragraph.title_body.default.yml

@@ -0,0 +1,43 @@
+uuid: 9a87b01b-0d59-4250-8a18-1711ec8e4130
+langcode: en
+status: true
+dependencies:
+  config:
+    - field.field.paragraph.title_body.field_body
+    - field.field.paragraph.title_body.field_drupal7_item_id
+    - field.field.paragraph.title_body.field_title
+    - paragraphs.paragraphs_type.title_body
+  module:
+    - text
+id: paragraph.title_body.default
+targetEntityType: paragraph
+bundle: title_body
+mode: default
+content:
+  field_body:
+    weight: 1
+    settings:
+      rows: 5
+      placeholder: ''
+    third_party_settings: {  }
+    type: text_textarea
+    region: content
+  field_drupal7_item_id:
+    weight: 2
+    settings:
+      size: 60
+      placeholder: ''
+    third_party_settings: {  }
+    type: string_textfield
+    region: content
+  field_title:
+    weight: 0
+    settings:
+      size: 60
+      placeholder: ''
+    third_party_settings: {  }
+    type: string_textfield
+    region: content
+hidden:
+  created: true
+  status: true

config/default/default/core.entity_view_display.node.should_have_been_page.default.yml

@@ -0,0 +1,28 @@
+uuid: ee6af7b5-0abf-4c69-a409-0c46acd5bc08
+langcode: en
+status: true
+dependencies:
+  config:
+    - field.field.node.should_have_been_page.body
+    - node.type.should_have_been_page
+  module:
+    - text
+    - user
+id: node.should_have_been_page.default
+targetEntityType: node
+bundle: should_have_been_page
+mode: default
+content:
+  body:
+    label: hidden
+    type: text_default
+    weight: 101
+    settings: {  }
+    third_party_settings: {  }
+    region: content
+  links:
+    weight: 100
+    settings: {  }
+    third_party_settings: {  }
+    region: content
+hidden: {  }

config/default/default/core.entity_view_display.node.should_have_been_page.teaser.yml

@@ -0,0 +1,30 @@
+uuid: 93ee5bde-27ee-45c8-a75f-c0bf69d191f4
+langcode: en
+status: true
+dependencies:
+  config:
+    - core.entity_view_mode.node.teaser
+    - field.field.node.should_have_been_page.body
+    - node.type.should_have_been_page
+  module:
+    - text
+    - user
+id: node.should_have_been_page.teaser
+targetEntityType: node
+bundle: should_have_been_page
+mode: teaser
+content:
+  body:
+    label: hidden
+    type: text_summary_or_trimmed
+    weight: 101
+    settings:
+      trim_length: 600
+    third_party_settings: {  }
+    region: content
+  links:
+    weight: 100
+    settings: {  }
+    third_party_settings: {  }
+    region: content
+hidden: {  }

config/default/default/core.entity_view_display.node.test_paragraphs.default.yml

@@ -0,0 +1,30 @@
+uuid: 37a2394f-5cce-4d5c-8938-0aa8012bb98e
+langcode: en
+status: true
+dependencies:
+  config:
+    - field.field.node.test_paragraphs.field_content
+    - node.type.test_paragraphs
+  module:
+    - entity_reference_revisions
+    - user
+id: node.test_paragraphs.default
+targetEntityType: node
+bundle: test_paragraphs
+mode: default
+content:
+  field_content:
+    type: entity_reference_revisions_entity_view
+    weight: 101
+    label: above
+    settings:
+      view_mode: default
+      link: ''
+    third_party_settings: {  }
+    region: content
+  links:
+    weight: 100
+    settings: {  }
+    third_party_settings: {  }
+    region: content
+hidden: {  }

config/default/default/core.entity_view_display.paragraph.title_body.default.yml

@@ -0,0 +1,40 @@
+uuid: fa30105a-148d-4d77-8904-4894c408bddf
+langcode: en
+status: true
+dependencies:
+  config:
+    - field.field.paragraph.title_body.field_body
+    - field.field.paragraph.title_body.field_drupal7_item_id
+    - field.field.paragraph.title_body.field_title
+    - paragraphs.paragraphs_type.title_body
+  module:
+    - text
+id: paragraph.title_body.default
+targetEntityType: paragraph
+bundle: title_body
+mode: default
+content:
+  field_body:
+    weight: 1
+    label: above
+    settings: {  }
+    third_party_settings: {  }
+    type: text_default
+    region: content
+  field_drupal7_item_id:
+    weight: 2
+    label: above
+    settings:
+      link_to_entity: false
+    third_party_settings: {  }
+    type: string
+    region: content
+  field_title:
+    weight: 0
+    label: above
+    settings:
+      link_to_entity: false
+    third_party_settings: {  }
+    type: string
+    region: content
+hidden: {  }

config/default/default/field.field.node.should_have_been_page.body.yml

@@ -0,0 +1,23 @@
+uuid: d6760524-c83c-4bb0-8dfb-a455099384f6
+langcode: en
+status: true
+dependencies:
+  config:
+    - field.storage.node.body
+    - node.type.should_have_been_page
+  module:
+    - text
+id: node.should_have_been_page.body
+field_name: body
+entity_type: node
+bundle: should_have_been_page
+label: Body
+description: ''
+required: false
+translatable: true
+default_value: {  }
+default_value_callback: ''
+settings:
+  display_summary: true
+  required_summary: false
+field_type: text_with_summary

config/default/default/field.field.node.test_paragraphs.field_content.yml

@@ -0,0 +1,31 @@
+uuid: dda2557f-fc1e-4ba4-87b0-c9139f08fc51
+langcode: en
+status: true
+dependencies:
+  config:
+    - field.storage.node.field_content
+    - node.type.test_paragraphs
+    - paragraphs.paragraphs_type.title_body
+  module:
+    - entity_reference_revisions
+id: node.test_paragraphs.field_content
+field_name: field_content
+entity_type: node
+bundle: test_paragraphs
+label: Content
+description: ''
+required: false
+translatable: false
+default_value: {  }
+default_value_callback: ''
+settings:
+  handler: 'default:paragraph'
+  handler_settings:
+    negate: 0
+    target_bundles:
+      title_body: title_body
+    target_bundles_drag_drop:
+      title_body:
+        enabled: true
+        weight: 2
+field_type: entity_reference_revisions

config/default/default/field.field.paragraph.title_body.field_body.yml

@@ -0,0 +1,21 @@
+uuid: 9708c395-e2e0-4995-86f6-d25fcd7538cf
+langcode: en
+status: true
+dependencies:
+  config:
+    - field.storage.paragraph.field_body
+    - paragraphs.paragraphs_type.title_body
+  module:
+    - text
+id: paragraph.title_body.field_body
+field_name: field_body
+entity_type: paragraph
+bundle: title_body
+label: Body
+description: ''
+required: false
+translatable: false
+default_value: {  }
+default_value_callback: ''
+settings: {  }
+field_type: text_long

config/default/default/field.field.paragraph.title_body.field_drupal7_item_id.yml

@@ -0,0 +1,19 @@
+uuid: e9172a33-7697-4f86-8c33-cbf259f03b64
+langcode: en
+status: true
+dependencies:
+  config:
+    - field.storage.paragraph.field_drupal7_item_id
+    - paragraphs.paragraphs_type.title_body
+id: paragraph.title_body.field_drupal7_item_id
+field_name: field_drupal7_item_id
+entity_type: paragraph
+bundle: title_body
+label: drupal7_item_id
+description: ''
+required: false
+translatable: false
+default_value: {  }
+default_value_callback: ''
+settings: {  }
+field_type: string

config/default/default/field.field.paragraph.title_body.field_title.yml

@@ -0,0 +1,19 @@
+uuid: c9acc485-3d60-4bb2-a4a1-c70e2bfcd9a4
+langcode: en
+status: true
+dependencies:
+  config:
+    - field.storage.paragraph.field_title
+    - paragraphs.paragraphs_type.title_body
+id: paragraph.title_body.field_title
+field_name: field_title
+entity_type: paragraph
+bundle: title_body
+label: Title
+description: ''
+required: false
+translatable: false
+default_value: {  }
+default_value_callback: ''
+settings: {  }
+field_type: string

config/default/default/field.storage.node.field_content.yml

@@ -0,0 +1,21 @@
+uuid: e13ad7d1-cf8b-4192-838f-566a738d5333
+langcode: en
+status: true
+dependencies:
+  module:
+    - entity_reference_revisions
+    - node
+    - paragraphs
+id: node.field_content
+field_name: field_content
+entity_type: node
+type: entity_reference_revisions
+settings:
+  target_type: paragraph
+module: entity_reference_revisions
+locked: false
+cardinality: -1
+translatable: true
+indexes: {  }
+persist_with_no_fields: false
+custom_storage: false

config/default/default/field.storage.paragraph.field_body.yml

@@ -0,0 +1,19 @@
+uuid: 19642806-ee05-4989-8e62-e45fd96e5e5e
+langcode: en
+status: true
+dependencies:
+  module:
+    - paragraphs
+    - text
+id: paragraph.field_body
+field_name: field_body
+entity_type: paragraph
+type: text_long
+settings: {  }
+module: text
+locked: false
+cardinality: 1
+translatable: true
+indexes: {  }
+persist_with_no_fields: false
+custom_storage: false

config/default/default/field.storage.paragraph.field_drupal7_item_id.yml

@@ -0,0 +1,21 @@
+uuid: f3f0c0c7-bccd-435b-b4ba-344b4225dd06
+langcode: en
+status: true
+dependencies:
+  module:
+    - paragraphs
+id: paragraph.field_drupal7_item_id
+field_name: field_drupal7_item_id
+entity_type: paragraph
+type: string
+settings:
+  max_length: 255
+  is_ascii: false
+  case_sensitive: false
+module: core
+locked: false
+cardinality: 1
+translatable: true
+indexes: {  }
+persist_with_no_fields: false
+custom_storage: false

config/default/default/field.storage.paragraph.field_title.yml

@@ -0,0 +1,21 @@
+uuid: 888d992a-867c-434f-b010-de4a162c5b40
+langcode: en
+status: true
+dependencies:
+  module:
+    - paragraphs
+id: paragraph.field_title
+field_name: field_title
+entity_type: paragraph
+type: string
+settings:
+  max_length: 255
+  is_ascii: false
+  case_sensitive: false
+module: core
+locked: false
+cardinality: 1
+translatable: true
+indexes: {  }
+persist_with_no_fields: false
+custom_storage: false

config/default/default/node.type.should_have_been_page.yml

@@ -0,0 +1,18 @@
+uuid: 421f0457-c81d-4608-8961-f68d40f7f725
+langcode: en
+status: true
+dependencies:
+  module:
+    - menu_ui
+third_party_settings:
+  menu_ui:
+    available_menus:
+      - main-menu
+    parent: 'main-menu:0:'
+name: 'Should Have Been Page'
+type: should_have_been_page
+description: ''
+help: ''
+new_revision: false
+preview_mode: 1
+display_submitted: true

config/default/default/node.type.test_paragraphs.yml

@@ -0,0 +1,18 @@
+uuid: 9a6654b2-1395-4a8b-8f01-dac8c0201665
+langcode: en
+status: true
+dependencies:
+  module:
+    - menu_ui
+third_party_settings:
+  menu_ui:
+    available_menus:
+      - main-menu
+    parent: 'main-menu:0:'
+name: 'Test Paragraphs'
+type: test_paragraphs
+description: ''
+help: ''
+new_revision: false
+preview_mode: 1
+display_submitted: true

config/default/default/paragraphs.paragraphs_type.title_body.yml

@@ -0,0 +1,10 @@
+uuid: 5dc69ed5-cecb-43d5-8fb3-d02c517da478
+langcode: en
+status: true
+dependencies: {  }
+id: title_body
+label: 'Title Body'
+icon_uuid: null
+icon_default: null
+description: ''
+behavior_plugins: {  }

docroot/modules/custom/sample_migration/sample_migration.module

@@ -6,6 +6,7 @@
  */
 
 use Drupal\Core\Routing\RouteMatchInterface;
+use \Drupal\Core\Database\Database;
 
 /**
  * Implements hook_help().
@@ -28,8 +29,6 @@ function sample_migration_title_body_paragraphs(&$context) {
 
   /* @var NodeStorage $node_storage */
   $node_storage = $entity_type_manager->getStorage('node');
-  $media_storage = $entity_type_manager->getStorage('media');
-  $file_storage = $entity_type_manager->getStorage('file');
 
   if (empty($context['sandbox'])) {
     $context['sandbox'] = [];
@@ -38,43 +37,51 @@ function sample_migration_title_body_paragraphs(&$context) {
   if (!isset($context['sandbox']['progress'])) {
     $context['sandbox']['progress'] = 0;
     $context['sandbox']['current_index'] = 0;
-    $all_arm_pages = $node_storage->loadByProperties([
-      'type' => 'arm_page'
+    $all_pages = $node_storage->loadByProperties([
+      'type' => 'page'
     ]);
-    $context['sandbox']['arm_content'] = array_values($all_arm_pages);
-    $context['sandbox']['arm_map'] = _get_arm_map();
-    $context['sandbox']['file_map'] = _get_file_map();
-    $context['sandbox']['d7_files'] = _get_d7_arm_files();
+    $context['sandbox']['page_content'] = array_values($all_pages);
+    $context['sandbox']['title_page_fc'] = sample_migration_get_title_body_field_collections();
+    $context['sandbox']['test_paragraph_map'] = sample_migration_get_test_paragraph_content_map();
 
-    $context['sandbox']['index'] = array_values($context['sandbox']['arm_content']);
-    $context['sandbox']['max'] = count($context['sandbox']['arm_content']);
+    $context['sandbox']['index'] = array_values($context['sandbox']['page_content']);
+    $context['sandbox']['max'] = count($context['sandbox']['page_content']);
   }
 
   $limit = 10;
   $indexes = range($context['sandbox']['current_index'], $context['sandbox']['current_index'] + $limit);
 
   foreach ($indexes as $index) {
-    $node = $context['sandbox']['arm_content'][$index];
-
-    if (!is_null($node)) {
-      $context['results'][] = $node->title->value;
-      $d7nid = $context['sandbox']['arm_map'][$node->id()];
-      $d7file = $context['sandbox']['d7_files'][$d7nid->sourceid1];
-
-      if ($d7file) {
-        $d8file = $context['sandbox']['file_map'][$d7file->field_armpage_pdf_fid];
-        $current_file = $file_storage->load($d8file->destid1);
-
-        if ($d8file) {
-          $node->set('field_armpage_pdf', $current_file->id());
-          $node->save();
+    $current_result = $context['sandbox']['title_page_fc'][$index];
+    if (!is_null($current_result)) {
+      $d7_nid = $current_result->entity_id;
+      if (!is_null($context['sandbox']['title_page_fc'][$index])) {
+        $d8_nid = $context['sandbox']['test_paragraph_map'][$d7_nid]->destid1;
+        if (!is_null($d8_nid)) {
+          $node = $node_storage->load($d8_nid);
+          if (!is_null($node)) {
+            $paragraph_data = [
+              'field_title' => $current_result->field_fc_title_value,
+              'field_body' => [
+                'value' => $current_result->field_fc_body_value,
+                'format' => 'full_html',
+              ],
+              'field_drupal7_item_id' => $current_result->field_test_paragraphs_content_value,
+              'parent_type' => 'node',
+              'type' => 'title_body',
+              'status' => '1',
+              'parent_field_name' => 'field_content',
+              'parent_id' => $d8_nid
+            ];
+            sample_migration_create_title_body_paragraph($current_result, $paragraph_data);
+          }
         }
       }
     }
 
     $context['sandbox']['progress']++;
     $context['sandbox']['current_index'] = $index;
-    $context['message'] = t('Now processing Reviews');
+    $context['message'] = t('Now processing Paragraphs');
   }
 
   // Update batch on our progress.
@@ -86,7 +93,7 @@ function sample_migration_title_body_paragraphs(&$context) {
   }
 }
 
-function sample_migration_title_body_paragraphs_finished() {
+function sample_migration_title_body_paragraphs_finished($success, $results, $operations) {
   $messenger = \Drupal::messenger();
   if ($success) {
     $message = t('@count Reviews were added to Groups', ['@count' => count($results)]);
@@ -109,47 +116,98 @@ function sample_migration_title_body_paragraphs_finished() {
 function sample_migration_get_title_body_field_collections() {
   Database::setActiveConnection('drupal7');
   $drupal7db = Database::getConnection();
-  $query = $drupal7db->select('field_collection_item', 'fci')
-    ->fields('fci', [
-      'item_id',
-      'field_name',
-      'revision_id'
-    ]);
-  $query->innerJoin('field_data_' . $field_name, 'fd', 'fd.' . $field_name . '_value = fci.item_id');
-  $query->fields('fd', [
+  $query = $drupal7db->select('field_data_field_test_paragraphs_content', 'fc');
+  $query->fields('fc', [
+    'entity_id',
+    'field_test_paragraphs_content_value',
+    'delta'
+  ]);
+  $query->innerJoin('field_collection_item', 'fci', 'fc.entity_id = fci.item_id');
+  $query->fields('fci', [
+    'item_id',
+    'field_name',
+    'revision_id'
+  ]);
+  $query->innerJoin('field_data_field_fc_title', 'title', 'title.entity_id = fci.item_id');
+  $query->fields('title', [
     'entity_type',
     'bundle',
     'entity_id',
-    $field_name . '_revision_id'
+    'field_fc_title_value'
   ]);
-  $query->condition('fci.field_name', $field_name);
-
-  $query->leftJoin('field_data_field_usingpage_block_image', 'fdfubi', 'fdfubi.entity_id = fci.item_id');
-  $query->fields('fdfubi', [
-    'entity_id',
-    'revision_id',
-    'field_usingpage_block_image_fid'
+  $query->innerJoin('field_data_field_fc_body', 'body', 'body.entity_id = fci.item_id');
+  $query->fields('body', [
+    'entity_type',
+    'field_fc_body_value',
+    'field_fc_body_format',
+    'bundle',
+    'entity_id'
   ]);
 
   $results = $query->execute()->fetchAll();
   Database::setActiveConnection('default');
-  if (count($results)) {
-    $drupal8db = Database::getConnection();
-    $query = $drupal8db->select('migrate_map_upgrade_d7_node_using_library_page', 'mm');
-    $query->fields('mm', [
-      'sourceid1',
-      'destid1'
-    ]);
-    $map_results = $query->execute()->fetchAllAssoc('sourceid1');
-  }
+  return $results;
 }
 
 function sample_migration_get_test_paragraph_content_map() {
   $drupal8db = Database::getConnection();
-  $query = $drupal8db->select('migrate_map_upgrade_d7_node_using_library_page', 'mm');
+  $query = $drupal8db->select('migrate_map_d7_node__test_paragraphs', 'mm');
   $query->fields('mm', [
     'sourceid1',
     'destid1'
   ]);
   $map_results = $query->execute()->fetchAllAssoc('sourceid1');
+  return $map_results;
+}
+
+function sample_migration_create_title_body_paragraph($current_result, $paragraph_data) {
+  $paragraph_storage = \Drupal::entityTypeManager()->getStorage('paragraph');
+  $node_storage = \Drupal::entityTypeManager()->getStorage('node');
+
+  // check if paragraph already exists, if so we need to update it
+  // so we don't build a million paragraphs
+  $existing_paragraph = $paragraph_storage->loadByProperties([
+    'field_drupal7_item_id' => $current_result->field_test_paragraphs_content_value
+  ]);
+  if (!is_null($existing_paragraph) && count($existing_paragraph)) {
+    $this_paragraph = reset($existing_paragraph);
+  }
+  else {
+    $this_paragraph = $paragraph_storage->create($paragraph_data);
+    $this_paragraph->save();
+  }
+
+  // attach paragraph to node
+  $parent_node = $node_storage->load($current_result->entity_id);
+  if (!is_null($parent_node)) {
+    // based on different parent node type the field we attach it to is differently
+    $field_name = 'field_content';
+
+    // find all paragraphs already on the node so we don't add this one twice
+    // also so we don't delete a paragraph by adding a new one
+    $node_paragraphs = $parent_node->get($field_name)->getValue();
+    $should_add_paragraph = true;
+    if (count($node_paragraphs)) {
+      foreach ($node_paragraphs as $node_paragraph) {
+        if ($node_paragraph['target_id'] === $this_paragraph->id()) {
+          // if this paragraph is alrady attached, there is no reason to attach it again
+          $should_add_paragraph = false;
+          break;
+        }
+      }
+    }
+    if ($should_add_paragraph) {
+      // add this paragraph to the paragraphs array on the node and save it
+      $node_paragraphs[] = [
+        'target_id' => $this_paragraph->id(),
+        'target_revision_id' => $this_paragraph->getRevisionId()
+      ];
+      $parent_node->set($field_name, $node_paragraphs);
+      $parent_node->save();
+    }
+  }
+  else {
+    \Drupal::messenger()->addMessage(t("Unable to attach paragraph to content. Paragraph ID: " . $this_paragraph->id()), 'error');
+    \Drupal::logger('joco_migrations')->error("Unable to attach paragraph to content. Paragraph ID: " . $this_paragraph->id());
+  }
 }