Skip to main content

Migration Part I : Drupal to Drupal migration

Drupal 8 core provides support for Drupal-to-Drupal migrations. it will allow you to migrate your content from previous versions to Drupal 8.
Core:
  • Migrate
  • Migrate Drupal
Contributed:
Step 1 - goto your drupal 8 site setting.php and add the drupal 7 db setting in this file,
so default drupal 8 db settings comes with 
$database['default']['default']  copy this and make new key named as 
$database['upgrade']['default'] like below
$databases['upgrade']['default'] = array (
  'database' => 'dbname',
  'username' => 'dbuser',
  'password' => 'dbpass',
  'prefix' => '',
  'host' => 'localhost',
  'port' => '3306',
  'namespace' => 'Drupal\\Core\\Database\\Driver\\mysql',
  'driver' => 'mysql',
);
Make sure to have enable config properly the config folder in
$config_directories['staging'] // for drupal 7 config files
$config_directories['sync'] // for drupal 8 config files
Step-2  : Run the migration command from drupal 8  root
drush migrate-upgrade --configure-only
This command will generate migration configuration entities in the drupal 8 site, All the drupal 7 configuration would be availbale to the drupal 8 , next we will export these configuration in a directory in d8
Let suppose we are exporting these drupal 7 config in drupal8_root/tmp/migrate folder
drush config-export --destination=/tmp/migrate
Now You have two config in drupal 8 site, one is /tmp/migrate it has all the drupal 7 config and another is drupal8 /sites/default/config drupal 8 config files,,,,

So if we start migration then we have to copy the config files from /tmp/migrate   -> /sites/default/config folder.....

Lets Suppose we want to migrate only users then we would copy only two files as below,and paste it into the /sites/default/config

migrate_plus.migration_group.migrate_drupal7.yml
migrate_plus.migration_upgrade_d7_user.yml

We have to define one more db settting in d8 site with the key of drupal_7
it is defined in the (migrate_plus.migration_group.migrate_drupal7.yml) file
$databases['drupal_7']['default'] = array (
  'database' => 'dbname',
  'username' => 'dbuser',
  'password' => 'dbpass',
  'prefix' => '',
  'host' => 'localhost',
  'port' => '3306',
  'namespace' => 'Drupal\\Core\\Database\\Driver\\mysql',
  'driver' => 'mysql',
);

Now run
Drush config-import staging

Drush ms (will show you the status of migration)

Drush mi upgrade_d7_user

All Done.  That is the process of drupal to drupal migration

A Guide for Upgrading a Drupal 7 Website to Drupal 8

Drupal 8 core comes bundled with the following migration modules:

Ref: https://www.youtube.com/watch?v=_z2FH0efd_g
https://drupalize.me/blog/201604/custom-drupal-drupal-migrations-migrate-tools

Comments

Post a Comment

Popular posts from this blog

How to span column of custom table in Drupal

If you want to span the column of custom drupal table like below image, Follow the below code to make the header of the table , <?php $header = array('S.N','District', array('data' => '<div class ="house">Household </div><br><span>Rural</span> <p>Urban</p>','colspan' => 2), array('data' => '<div class ="house">Members</div> <br><span>Rural</span> <p>Urban</p>','colspan' => 2), 'Duplicate/Failed Registration', array('data' => '<div class ="house">Pending De duplication </div><br><span>Rural</span> <p>Urban</p>','colspan' => 2), 'Non Un-organised Workers', 'SSID Generated', 'No. of Card Personlised', ); $rows[] = arra...
1 comment
Read more

Get The field values of node in Drupal 8

use Drupal \ node \ NodeInterface ; /** * Implements hook_ENTITY_TYPE_insert() for node entities. * * This tests saving a node on node insert. * * @see \Drupal\node\Tests\NodeSaveTest::testNodeSaveOnInsert() */ function node_test_node_insert ( NodeInterface $node ) { // Set the node title to the node ID and save. if ( $node - > getTitle ( ) == 'new' ) { $node - > setTitle ( 'Node ' . $node - > id ( ) ) ; $node - > setNewRevision ( FALSE ) ; $node - > save ( ) ; } } Now There is so many functions are there to get the values, For All the functions available visit the API code, https://api.drupal.org/api/drupal/core%21modules%21node%21src%21NodeInterface.php/interface/NodeInterface/8.2.x Some of as below, Node edit form, Drupal 8 Automatically Load the whole object no need to load the entity like below, if ($event->getFormId() == 'node_alexa_audio_clips_edit_form') { $node = \Drupal::ro...
Post a Comment
Read more

Dependency Injection in Drupal 8

Here are the important nuggets: DI is a design pattern used in programming. DI uses composition. DI achieves inversion of control. Dependency == service that your class needs == object of a certain type. Inject == provide == compose == assemble. Container == service container == dependency container. Instead of using  \Drupal::service('foo_service') , get the service from the  $container  if using a class. And the important reasons: Externalizing dependencies makes code easier to test. It allows dependencies to be replaced without interfering with other functionality. Retrieving dependencies from the container is better for performance. Services: node.grant_storage The easiest examples to find are services that have arguments, because you can search *.services.yml files for the word "arguments". In  node.services.yml  for example, there is this entry: node.grant_storage: class: Drupal\node\NodeGrantDatabaseStorage argument...
Post a Comment
Read more