Guide Migrating to Drupal 7

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Disable non-core modules Go to the Modules page and disable all modules that are not listed under "Core - required" or "Core - optional". It is possible that some modules cannot be disabled, because others depend on them.

Are you still on Drupal 7?

Repeat this step until all non-core modules are disabled. If you made modifications to files like. Leave other modules in place, even though they are incompatible with Drupal 7.

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Download Drupal 7 Download the latest Drupal release of the target version to a directory outside of your web root. Extract the archive and copy the files into your Drupal directory. Copy the files into your Drupal installation directory: cp -R drupal-x. Re-apply modifications to core files Re-apply any modifications to files such as. Make your settings.

Run the update script Run update. This will update the core database tables. If you are unable to access update. Backup your database Backup your database after the core upgrade has run. Upgrade fields If you are upgrading from Drupal 6 to 7 and were using CCK and perhaps additional modules to create fields for your content types, you will need to upgrade the data in those fields as a separate step.

There are now several types of fields in core, but not every type.

Should you upgrade your Drupal 7 website or migrate to Drupal 8?

Migrate Upgrade module implements a Drush command to automatically generate migrations for all the configuration and content in an existing Drupal 6 or 7 site. There is an API that developers can interact with in order to alter migrations and the data being processed. We will see a few examples further down in this article. If the content model will go through a deep reorganization such as merging content from different sources into one, reorganizing fields, and changing machine names, then configuring the new site manually and writing content migrations may be the best option.

Notice that if the content model has many entity types, bundles, and fields, this can be a tough job so even if the team decides to go this route, generating content migrations with Migrate Upgrade can be useful since the resulting migrations can serve as templates for the ones to be written. The following command will read all migration files, create migrate entities out of them and insert them into the database so they are ready to be executed:.

Upgrade process to Drupal 7

It is a good practice to export the resulting migrate entities as configuration so we can track their changes. Therefore, we will export configuration after running the above command, which will create a list of files like the following:. In the above list, we see a mix of Configuration and Content migrations being created. Now we can check the status of each migration via the migrate:status Drush command:.

You should inspect any contributed modules in use on the old site and install them in the new one as they may contain migrations. For example, if the old site is using Redirect module, by installing itm and generating migrations like we did above, you should see a new migration provided by this module ready to go. Assuming that we decided to run migrations generated by Migrate Upgrade otherwise skip the following sub-section , we would first run configuration migrations and then content ones.

Here is the command to run all migrations with the tag Configuration along with their dependencies.

migrate drupal 6 to drupal 7

The above command will migrate site configuration, content types, taxonomy vocabularies, view modes, and such. Once this is done, it is recommended to export the resulting configuration via drush config:export and commit the changes. For example, the Media Migration module creates media fields and alters field mappings in content migrations so after installing it we should run the following commands to re-run them:.

If you check out the new database after running migrations, you will see something like this:.

Migrating to Drupal | Drupal 7 guide on

In the previous section, we rolled back the field migrations before running them again. Then continues with a series of lessons that take you from installing the Migrate module to writing and running your own custom data migration. Throughout the series Joe teaches us how to run a data migration using both the Migrate module's UI and drush, and some of the plusses and minuses of both methods.

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  • Joe also talks about the various different sources, or types of data, from which the Migrate module can read data and how to map the unique fields in a row of source data to their corresponding Drupal content types and fields. By migrating from a single source into two different Drupal content types we'll also have the opportunity to learn about creating relationships during a migration and mapping the resulting information to an entity reference field.

    During the course of writing a custom migration Joe will show us how and where we can add code to perform additional runtime data munging during our import process.

    Should I migrate from Drupal 7 to 8?

    We'll learn about importing data into multi-value fields, and even providing defaults for fields that don't have information. Then look at some of the tools the migrate module provides for collaborating with team members in order to create a successful migration path. Finally we'll wrap up the series looking at a couple of different techniques for debugging our migrations and dealing with pesky source material that just doesn't want to be imported. Because this series is focused primarily on writing custom data migrations and since the Migrate module itself requires at least some amount of code to be written to perform a migration it is suggested that students be familiar with PHP and basic Object Oriented Programming techniques.

    And although not required to run a migration Joe uses the drush command line tool extensively in this series. If you need a refresher on using drush take a moment to watch our drush series.