fix(sql): fix default created / last edited default values for m2m tables

The junction table SummitEventType_SummitTicketType was created (via CreateTableTrait)
with Created and LastEdited columns that are NOT NULL but have no default value. When
Doctrine's ManyToManyPersister inserts into this table (e.g., when updating allowed_ticket_types
on an event type), it only inserts the FK columns (SummitEventTypeID, SummitTicketTypeID). MySQL
rejects the insert because Created has no value and no default.

Author: smarcet

database/migrations/model/CreateTableTrait.php

@@ -31,8 +31,8 @@ public static function createTable(Schema $schema, string $table_name, callable
                 $table->primary("ID");
                 $table->string('ClassName')->setDefault($table_name);
                 $table->index("ClassName", "ClassName");
-                $table->timestamp('Created');
-                $table->timestamp('LastEdited');
+                $table->timestamp('Created')->setDefault('CURRENT_TIMESTAMP');
+                $table->timestamp('LastEdited')->setDefault('CURRENT_TIMESTAMP');
                 if($add_columns_callback)
                     $add_columns_callback($table);
             });

database/migrations/model/Version20260313144000.php

@@ -0,0 +1,59 @@
+<?php namespace Database\Migrations\Model;
+/**
+ * Copyright 2026 OpenStack Foundation
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ **/
+
+use Doctrine\Migrations\AbstractMigration;
+use Doctrine\DBAL\Schema\Schema as Schema;
+
+/**
+ * Class Version20260313144000
+ * @package Database\Migrations\Model
+ *
+ * Adds DEFAULT CURRENT_TIMESTAMP to Created and LastEdited columns on
+ * ManyToMany junction tables so Doctrine's ManyToManyPersister can insert
+ * rows without explicitly providing these values.
+ */
+final class Version20260313144000 extends AbstractMigration
+{
+    /**
+     * @param Schema $schema
+     */
+    public function up(Schema $schema): void
+    {
+        $tables = [
+            'SummitEventType_SummitTicketType',
+            'SummitEvent_SummitTicketType',
+        ];
+
+        foreach ($tables as $table) {
+            $this->addSql("ALTER TABLE {$table} MODIFY Created datetime NOT NULL DEFAULT CURRENT_TIMESTAMP");
+            $this->addSql("ALTER TABLE {$table} MODIFY LastEdited datetime NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP");
+        }
+    }
+
+    /**
+     * @param Schema $schema
+     */
+    public function down(Schema $schema): void
+    {
+        $tables = [
+            'SummitEventType_SummitTicketType',
+            'SummitEvent_SummitTicketType',
+        ];
+
+        foreach ($tables as $table) {
+            $this->addSql("ALTER TABLE {$table} MODIFY Created datetime NOT NULL");
+            $this->addSql("ALTER TABLE {$table} MODIFY LastEdited datetime NOT NULL");
+        }
+    }
+}