Added default 0 to' vote_option_id'

lib/Migration/Version009000Date20181116063745.php

@@ -0,0 +1,69 @@
+<?php
+namespace OCA\Polls\Migration;
+
+use Doctrine\DBAL\Exception\TableNotFoundException;
+use Doctrine\DBAL\Platforms\PostgreSqlPlatform;
+use Doctrine\DBAL\Types\Type;
+use OCP\DB\ISchemaWrapper;
+use OCP\IDBConnection;
+use OCP\IConfig;
+use OCP\Migration\SimpleMigrationStep;
+use OCP\Migration\IOutput;
+
+/**
+ * Adding timestamp to options table
+ */
+class Version009000Date20181116063745 extends SimpleMigrationStep {
+	/** @var IDBConnection */
+	protected $connection;
+
+	/** @var IConfig */
+	protected $config;
+
+	/**
+	 * @param IDBConnection $connection
+	 * @param IConfig $config
+	 */
+	public function __construct(IDBConnection $connection, IConfig $config) {
+		$this->connection = $connection;
+		$this->config = $config;
+	}
+	/**
+	 * @param IOutput $output
+	 * @param \Closure $schemaClosure The `\Closure` returns a `ISchemaWrapper`
+	 * @param array $options
+	 * @since 13.0.0
+	 */
+	public function preSchemaChange(IOutput $output, \Closure $schemaClosure, array $options) {
+	}
+
+	/**
+	 * @param IOutput $output
+	 * @param \Closure $schemaClosure The `\Closure` returns a `ISchemaWrapper`
+	 * @param array $options
+	 * @return null|ISchemaWrapper
+	 * @since 13.0.0
+	 */
+	public function changeSchema(IOutput $output, \Closure $schemaClosure, array $options) {
+		/** @var ISchemaWrapper $schema */
+		$schema = $schemaClosure();
+
+		if ($schema->hasTable('polls_votes')) {
+			$table = $schema->getTable('polls_votes');
+			$table->changeColumn('vote_option_id', [
+				'notnull' => false,
+				'default' => 0
+			]);
+		}
+		return $schema;
+	}
+
+	/**
+	 * @param IOutput $output
+	 * @param \Closure $schemaClosure The `\Closure` returns a `ISchemaWrapper`
+	 * @param array $options
+	 * @since 13.0.0
+	 */
+	public function postSchemaChange(IOutput $output, \Closure $schemaClosure, array $options) {
+	}
+}