July 2017
Intermediate to advanced
456 pages
11h 32m
English
Content preview from Mastering Drupal 8
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Creating a migration source
A migration source provides the initial rows that are passed to any registered processors and then ultimately to the destination entity. Drupal 8 core provides a SqlBase class that serves as the base class for migrations that read from the database. The migrate_example module contains the following:
<?php /** * @file * Contains * \Drupal\migrate_example\Plugin\migrate\source\BeerNode. */ namespace Drupal\migrate_example\Plugin\migrate\source; use Drupal\migrate\Plugin\migrate\source\SqlBase; use Drupal\migrate\Row; /** * Source plugin for beer content. * * @MigrateSource( * id = "beer_node" * ) */ class BeerNode extends SqlBase { /** * {@inheritdoc} */ public function query() { /** * An important point to note ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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