Upgrading Rules from Drupal 7
If you are upgrading an existing Rules installation from Drupal 7 (or upgrading a Drupal 7 module that requires Rules, e.g., Ubercart), there are some steps you can (should) take to ensure that your upgraded installation is fully enabled at the end of the process.
The issue to deal with is that Backdrop Rules relies on two modules that don't exist in Drupal:
- Entity UI (
entity_ui), needed for the Backdrop version of Rules; - Entity Plus (
entity_plus), also needed for the Backdrop version of Rules.
When the Backdrop version of update.php runs, if those modules are not present and enabled, then the update will disable all of the Backdrop modules that depend on them, which includes Rules, plus any further modules that depend on Rules.
So the solution is to install "stub" modules in the Drupal installation prior to generating the database from which the Backdrop upgrade will take place.
Assuming you are following the official upgrade instructions or something similar like this, do the following:
-
Download and unzip these two modules, which are Drupal "stub" modules:
-
In Step 2, "Prepare your Drupal site for upgrade", prior to substep 9 ("Make a second backup...calling it backdrop-ready.sql"),
- Install those two modules into
sites/all/modulesof your Drupal installation; - Enable those two modules. (They don't do anything. This just makes your database know that they exist, or rather, that they will be forthcoming.)
- Install those two modules into
-
Continue with substep 9: make your second backup of the database to be used for Backdrop, e.g., backdrop-ready.sql.
-
Once you have made that second backup, you can uninstall and remove the two stub modules from your Drupal installation.
-
Continue with the rest of the migration/upgrade process.
Of course, make sure that you've already installed the Backdrop versions of Rules, Entity Plus, and Entity UI in your Backdrop contrib folder prior to running update.php, or all of the above will be for naught.