awa

dns/migrations/007_cleanup_invalid_records.sql

@@ -2,6 +2,26 @@
 DELETE FROM dns_records WHERE record_type NOT IN ('A', 'AAAA', 'CNAME', 'TXT');
 
 -- Now apply the constraint
-ALTER TABLE dns_records DROP CONSTRAINT IF EXISTS dns_records_record_type_check;
-ALTER TABLE dns_records ADD CONSTRAINT dns_records_record_type_check 
-    CHECK (record_type IN ('A', 'AAAA', 'CNAME', 'TXT'));
+ALTER TABLE dns_records DROP CONSTRAINT dns_records_record_type_check;
+
+-- MySQL doesn't support table-level CHECK constraints, using trigger instead
+DELIMITER //
+CREATE TRIGGER check_record_type_before_insert
+BEFORE INSERT ON dns_records
+FOR EACH ROW
+BEGIN
+    IF NEW.record_type NOT IN ('A', 'AAAA', 'CNAME', 'TXT') THEN
+        SIGNAL SQLSTATE '45000' SET MESSAGE_TEXT = 'Invalid record type';
+    END IF;
+END;
+//
+CREATE TRIGGER check_record_type_before_update
+BEFORE UPDATE ON dns_records
+FOR EACH ROW
+BEGIN
+    IF NEW.record_type NOT IN ('A', 'AAAA', 'CNAME', 'TXT') THEN
+        SIGNAL SQLSTATE '45000' SET MESSAGE_TEXT = 'Invalid record type';
+    END IF;
+END;
+//
+DELIMITER ;