diff options
Diffstat (limited to 'db/migrate/20220613110711_migrate_custom_filters.rb')
-rw-r--r-- | db/migrate/20220613110711_migrate_custom_filters.rb | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/db/migrate/20220613110711_migrate_custom_filters.rb b/db/migrate/20220613110711_migrate_custom_filters.rb new file mode 100644 index 000000000..ea6a9b8c6 --- /dev/null +++ b/db/migrate/20220613110711_migrate_custom_filters.rb @@ -0,0 +1,34 @@ +# frozen_string_literal: true + +class MigrateCustomFilters < ActiveRecord::Migration[6.1] + def up + # Preserve IDs as much as possible to not confuse existing clients. + # As long as this migration is irreversible, we do not have to deal with conflicts. + safety_assured do + execute <<-SQL.squish + INSERT INTO custom_filter_keywords (id, custom_filter_id, keyword, whole_word, created_at, updated_at) + SELECT id, id, phrase, whole_word, created_at, updated_at + FROM custom_filters + SQL + end + end + + def down + # Copy back changes from custom filters guaranteed to be from the old API + safety_assured do + execute <<-SQL.squish + UPDATE custom_filters + SET phrase = custom_filter_keywords.keyword, whole_word = custom_filter_keywords.whole_word + FROM custom_filter_keywords + WHERE custom_filters.id = custom_filter_keywords.id AND custom_filters.id = custom_filter_keywords.custom_filter_id + SQL + end + + # Drop every keyword as we can't safely provide a 1:1 mapping + safety_assured do + execute <<-SQL.squish + TRUNCATE custom_filter_keywords RESTART IDENTITY + SQL + end + end +end |