Change email_queue.template_vars to longtext.

issue lorenzo#31

config/Migrations/20190610024410_AlterTemplateVarsToEmailQueue.php

@@ -0,0 +1,45 @@
+<?php
+use Migrations\AbstractMigration;
+use Phinx\Db\Adapter\MysqlAdapter;
+
+class AlterTemplateVarsToEmailQueue extends AbstractMigration
+{
+
+    /**
+     * Up Method
+     *
+     * More information on this method is available here:
+     * http://docs.phinx.org/en/latest/migrations.html#the-up-method
+     *
+     * @return void
+     */
+    public function up()
+    {
+        $this->table('email_queue')
+            ->changeColumn('template_vars', 'text', [
+                'limit' => MysqlAdapter::TEXT_LONG,
+                'default' => null,
+                'null' => false,
+            ])
+            ->update();
+    }
+
+    /**
+     * Down Method
+     *
+     * More information on this method is available here:
+     * http://docs.phinx.org/en/latest/migrations.html#the-down-method
+     *
+     * @return void
+     */
+    public function down()
+    {
+        $this->table('email_queue')
+            ->changeColumn('template_vars', 'text', [
+                'limit' => null,
+                'default' => null,
+                'null' => false,
+            ])
+            ->update();
+    }
+}