Übersetzungen von Steuern löschen, wenn Steuer gelöscht wird.

Via Trigger. Außerdem löscht das Update-Skript alle verweisten Übersetzungen
der Steuern.

diff --git a/sql/Pg-upgrade2/delete_translations_on_tax_delete.sql b/sql/Pg-upgrade2/delete_translations_on_tax_delete.sql
new file mode 100644 (file)
index 0000000..5243ace
--- /dev/null
+++ b/sql/Pg-upgrade2/delete_translations_on_tax_delete.sql
@@ -0,0 +1,24 @@
+-- @tag: delete_translations_on_tax_delete
+-- @description: Übersetzungen löschen, wenn Steuer gelöscht wird
+-- @depends: release_3_0_0
+-- @encoding: utf-8
+
+CREATE OR REPLACE FUNCTION generic_translations_delete_on_tax_delete_trigger()
+RETURNS TRIGGER AS $$
+  BEGIN
+    DELETE FROM generic_translations
+      WHERE translation_id = OLD.id AND translation_type LIKE 'SL::DB::Tax/taxdescription';
+    RETURN OLD;
+  END;
+$$ LANGUAGE plpgsql;
+
+DROP TRIGGER IF EXISTS after_delete_tax_trigger ON tax;
+
+CREATE TRIGGER after_delete_tax_trigger
+  AFTER DELETE ON tax
+  FOR EACH ROW EXECUTE PROCEDURE generic_translations_delete_on_tax_delete_trigger();
+
+-- delete orphaned translations
+DELETE FROM generic_translations
+  WHERE translation_type LIKE 'SL::DB::Tax/taxdescription'
+  AND   translation_id NOT IN (SELECT id FROM tax);