ISTWCMS-5880: fixing update hook for existing sites and media

uw_cfg_common.install

@@ -465,6 +465,46 @@ function uw_cfg_common_update_9105(&$sandbox) {
  */
 function uw_cfg_common_update_9106(&$sandbox) {
 
+  // The database service.
+  $database = \Drupal::database();
+
+  // The tables to be used for fields to get and remove.
+  $tables = [
+    'node__field_uw_type_of_media',
+    'node_revision__field_uw_type_of_media',
+    'node__field_uw_hero_image',
+    'node_revision__field_uw_hero_image',
+  ];
+
+  // Step through each of the tables and get the data,
+  // then truncate them.  We need to truncate the table
+  // so that we are able to modify the fields, if there
+  // is data in these tables, Drupal throws an error about
+  // data already existing in the fields.  We will insert
+  // the data back into the tables after everything is
+  // completed.
+  foreach ($tables as $table) {
+
+    // Get the rows in the table.
+    $values = $database->select($table, 'n')
+      ->fields('n')
+      ->execute()
+      ->fetchAll();
+
+    // Step through each of the rows and add to variable.
+    foreach ($values as $value) {
+
+      // Add to the variable and cast to an array so that
+      // we are not using an object, just makes it easier
+      // to work with when inserting these rows back
+      // into the database.
+      $node_data[$table][] = (array)$value;
+    }
+
+    // Truncate the table.
+    $database->truncate($table)->execute();
+  }
+
   // The content types that are not getting any changes.
   $cts_not_to_install = [
     'uw_ct_sidebar',
@@ -630,4 +670,29 @@ function uw_cfg_common_update_9106(&$sandbox) {
       $node->save();
     }
   }
+
+  // Step through all the tables and insert back into
+  // the database.
+  foreach ($node_data as $table => $data) {
+
+    // Get all the rows from the table.
+    foreach ($data as $field_data) {
+
+      // Reset the fields array, so we are working with
+      // a blank array to insert.
+      $fields = [];
+
+      // Step through all the entries in the row and add
+      // to the fields array, this makes it much easier to
+      // do one insert command.
+      foreach ($field_data as $key => $value) {
+        $fields[$key] = $value;
+      }
+
+      // Insert the row into the database.
+      $result = $database->insert($table)
+        ->fields($fields)
+        ->execute();
+    }
+  }
 }