brooke-heaton

<?php 

/**
 * Rollback only 'articles' type nodes using the idlist option 
 * This is useful if you can't for some reason rollback the whole migration
 */
function migration_update_7001() {
  // Get the 'migrate' database and query for nodes that should not have been
  // in our migration class - 52 is the term id for 'articles' 
  $results = Database::getConnection('default', 'migrate')

brooke-heaton

<?php 
/**
 * Helper class to pass parameters to callback function within preg_replace_callback
 * to replace absolute D6 urls with D6 aliases
 */

class InternalLinksConverter {
  function replace($matches) {
    if (isset($this->link_aliases)) {
      $link_aliases = $this->link_aliases;

brooke-heaton

<?php 

/**
 * Helper function to fetch the new Drupal 7 ID of a migrated entity
 * if we know the old id
 *
 * @param $old_nid - old nid of biography node from legacy node ref
 * @return tid of the new term
 */

brooke-heaton

<?php

/**
 * Delete all old nodes prior to a certain node id
 * to prepare DB for migration
 */
function DeleteOldNodesByNIDCutoff($nid) {
  $old_nodes = db_select('node')
    ->fields('node', array('nid'))
    ->condition('node.nid', $nid, '<')

brooke-heaton

<?php

/**
 * This Drupal 7 helper function will return and echo the count of 
 * taxonomy terms by vocabulary
 * @param $vid - integer for vocabulary id
 */

function GetCountTaxonomyTermsByVocab($vid) {
  $query = new EntityFieldQuery;

brooke-heaton

<?php 

/**
*  This helper Drupal 7 function can look up if a term exists and is useful
*  if adding terms in a postImport() method on a migration or
*  if needing to avoid duplicates or relate entities to the term.
*/

public function checkTermExistsByName($name) {
    $query = new EntityFieldQuery();

brooke-heaton

<? php

/**
*  This Drupal 7 helper function can look up if a node exists and is useful
*  if adding nodes in a postImport() method on a migration or
*  if needing to avoid duplicates or relate nodes.
*/

public function checkNodeExistsByTitle($title) {
    $query = new EntityFieldQuery();

brooke-heaton

<?php
    /**
    *  This Drupal 7 helper function adds a node of bundle 'topic' which has a nat term reference
    *  field 'field_about' which should correspond to the parent term for this node's
    *  sibling 'node'. 
    */

    public function addNATNode($tid, $name) {
    $parent = db_query('SELECT parent FROM taxonomy_term_hierarchy WHERE tid = :tid', array(':tid' => $tid))->fetchField();
    $topic = entity_create('node', array('type' => 'topic'));