invoiceninja/app/Models/LookupModel.php

<?php

namespace App\Models;

use Eloquent;

/**
 * Class ExpenseCategory.
 */
class LookupModel extends Eloquent
{
    /**
     * @var bool
     */
    public $timestamps = false;

    public function lookupAccount()
    {
        return $this->belongsTo('App\Models\LookupAccount');
    }

    public static function createNew($accountKey, $data)
    {
        if (! env('MULTI_DB_ENABLED')) {
            return;
        }

        $current = config('database.default');
        config(['database.default' => DB_NINJA_LOOKUP]);

        $lookupAccount = LookupAccount::whereAccountKey($accountKey)->first();

        if ($lookupAccount) {
            $data['lookup_account_id'] = $lookupAccount->id;
        } else {
            abort('Lookup account not found for ' . $accountKey);
        }

        static::create($data);

        config(['database.default' => $current]);
    }

    public function getDbServer()
    {
        return $this->lookupAccount->lookupCompany->dbServer->name;
    }
}