refactoring for dependency injection and testability.

laravel/database/query/postgres.php

@@ -0,0 +1,27 @@
+<?php namespace Laravel\Database\Query;
+
+use Laravel\Database\Query;
+
+class Postgres extends Query {
+
+	/**
+	 * Insert an array of values into the database table and return the value of the ID column.
+	 *
+	 * <code>
+	 *		// Insert into the "users" table and get the auto-incrementing ID
+	 *		$id = DB::table('users')->insert_get_id(array('email' => 'example@gmail.com'));
+	 * </code>
+	 *
+	 * @param  array  $values
+	 * @return int
+	 */
+	public function insert_get_id($values)
+	{
+		$query = $this->connection->pdo->prepare($this->compiler->insert_get_id($this, $values));
+
+		$query->execute(array_values($values));
+
+		return (int) $query->fetch(\PDO::FETCH_CLASS, 'stdClass')->id;
+	}
+
+}