<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); 

class Migration_Share_write_access extends CI_Migration {
    public function up() {
        echo "Adding column write_access to shared table...\n";
        
        // DBForge PostgreSQL support is broken
        // (https://github.com/EllisLab/CodeIgniter/issues/808)
        // Can't use it to add a new column :-(
        $this->db->query("ALTER TABLE shared ADD COLUMN write_access BOOLEAN
                NOT NULL DEFAULT '0'");

        // AgenDAV only provided write access prior to version 1.2.5
        echo "Setting initial value for write_access...\n";
        $q = $this->db->update('shared', array('write_access' => '1'));
    }

    public function down() {
        $this->dbforge->drop_column('shared',
                'write_access');
    }
}