Migrating a website software version is one of the most complicated procedure a webmaster has to deal with when managing a website. Upgrading to Drupal 8? Here is a small guide with various details. Let’s start with general info : How to see the NID of a node. If the node is in ‘edit’ mode, you can see the nid in the URL. (A node, in case you’re wondering, is a page like an article or a forum posting. You can design what fields it has and how they is displayed. Typically a node will consist of a heading, some body text, maybe an image, etc. Drupal assigns two URL addresses to each node, a human-friendly one made of words, and a nid, or node id.)
Note: Earlier, there used to be a migrate_plus module in Drupal 8 core which contained all the pieces of migrate functionality that wasn’t able to make it in the Drupal 7 core. It contained all the plugins for the support of XML, CSV and JSON data sources along with the support for databases like MS SQL or Oracle. This module has now been split into different modules, namely migrate_plus, migrate_tools and migrate_source_csv. After clicking Continue, you will be brought to the screen in the following screenshot. Enter all the required details such as your existing website’s credentials, the database location and the location of your website files.
If you’re new to the Migrate API, start from the beginning and get an overview of how the system works and how all the pieces fit together. This is essential background information for anyone wanting to migrate data into Drupal. Additionally, part of performing any migration is planning and preparation. Migrations involve preparing and analyzing your source data, building a new website that data can be migrated into, and lots of testing, rolling back, and testing again, in order to get everything right.
Drupal distributions are usually used as a starting point for developing a new website. The most straightforward way to use a distribution is to install it from scratch. From there, you can selectively migrate in content from other sources, including one or more existing websites. Migrating data here might be as simple as copying and pasting several pages from an old site into the new site. For larger sites, it could involve writing custom migration scripts or using an existing Drupal module like Migrate or Feeds.
The steps above outline how to get a distribution minimally installed on an existing site. But you’ll still have a lot of work to do to reconcile your existing site content and structure with what has been created by the distribution. Here are a few tips to get you started–but you should begin with the assumption that there will be lots more you’ll discover and need to fix. Content types and fields. You may have existing content types on your site that overlap with those provided by the distribution. For example, if you have an existing content type called ‘news’, it might have a function very close to that of an ‘article’ content provided by one of the features you’ve enabled. To begin to use the new feature’s functionality, you could consider converting the existing ‘news’ content into ‘article’ content. See extra details at Drupal 7 Upgrade.