- Добавлена миграция на поле trigger_id, указывающего на то, какой триггер вызвал конкретное письмо

console/migrations/m160229_103010_add_trigger_id_column_to_trigger_schedule_table.php

+<?php
+
+use yii\db\Migration;
+
+class m160229_103010_add_trigger_id_column_to_trigger_schedule_table extends Migration
+{
+    public function up()
+    {
+        $this->addColumn(
+            'trigger_schedule',
+            'trigger_id',
+            $this->integer(11)->notNull()
+        );
+        $this->addForeignKey(
+            'fk_schedule_trigger',
+            'trigger_schedule', 'trigger_id',
+            'trigger_trigger', 'id'
+        );
+    }
+
+    public function down()
+    {
+        $this->dropForeignKey(
+            'fk_schedule_trigger',
+            'trigger_schedule'
+        );
+        $this->dropColumn(
+            'trigger_schedule',
+            'trigger_id'
+        );
+    }
+}