db: backport delete_orphans
in recent migrations
Recent migrations used ActiveRecord when removing invalid data. This may break if the ActiveRecord model later changes. To ensure these migrations will run correctly, even when the code will have changed, let's use an SQL-based helper instead of ActiveRecord.
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2 changed files with 9 additions and 18 deletions
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class AddAdministrateurForeignKeyToAdministrateursProcedure < ActiveRecord::Migration[6.1]
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def up
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# Sanity check
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say_with_time 'Removing AdministrateursProcedures where the associated Administrateur no longer exists ' do
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deleted_administrateur_ids = AdministrateursProcedure.where.missing(:administrateur).pluck(:administrateur_id)
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AdministrateursProcedure.where(administrateur_id: deleted_administrateur_ids).delete_all
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end
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include Database::MigrationHelpers
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add_foreign_key :administrateurs_procedures, :administrateurs
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def up
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delete_orphans :administrateurs_procedures, :administrateurs_procedures
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add_foreign_key :administrateurs_procedures, :administrateurs_procedures
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end
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def down
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class AddForeignKeysToAdministrateursInstructeurs < ActiveRecord::Migration[6.1]
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include Database::MigrationHelpers
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def up
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# Sanity check
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say_with_time 'Removing AdministrateursInstructeur where the associated Administrateur no longer exists ' do
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deleted_administrateurs_ids = AdministrateursInstructeur.where.missing(:administrateur).pluck(:administrateur_id)
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AdministrateursInstructeur.where(administrateur_id: deleted_administrateurs_ids).delete_all
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end
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say_with_time 'Removing AdministrateursInstructeur where the associated Instructeur no longer exists ' do
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deleted_instructeurs_ids = AdministrateursInstructeur.where.missing(:instructeur).pluck(:instructeur_id)
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AdministrateursInstructeur.where(instructeur_id: deleted_instructeurs_ids).delete_all
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end
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delete_orphans :administrateurs_instructeurs, :administrateurs
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add_foreign_key :administrateurs_instructeurs, :administrateurs
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delete_orphans :administrateurs_instructeurs, :instructeurs
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add_foreign_key :administrateurs_instructeurs, :instructeurs
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end
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