A class your objects can inherit from to allow your Strata models to connect to other MySQL databases than the one hosting the Wordpress installation
Require the dependency through Composer :
$ composer config repositories.strata-external-db-connector vcs https://github.com/francoisfaubert/strata-external-db-connector
$ composer require francoisfaubert/strata-external-db-connector
This abstract class is best implemented by creating a service object which will inherit DbConnector.
You models will then feed an instance of the service class when a query() invocation is made.
In this example we will create a Strata Model named 'Rates' that connects to an external MySQL database using a custom service.
First, create a new Rate Model using Strata's generate command.
$ ./strata generate model rateThen manually create a new connection service class under ~/src/Model/Service/ named RatesService.php.
The file should contain connection information as well optional pre-formatted queries. It also has the job of returning RateEntity elements upon each queries' fetch().
<?php
namespace App\Model\Service;
use Francoisfaubert\Service\Db\Connector\MysqlConnector;
use App\Model\Rate;
class RatesService extends MysqlConnector {
public function init()
{
$this->servername = getenv('RATES_DB_HOST');
$this->dbname = getenv('RATES_DB_NAME');
$this->username = getenv('RATES_DB_USER');
$this->password = getenv('RATES_DB_PASSWORD');
}
public function fetch()
{
$formatted = array();
foreach (parent::fetch() as $row) {
$formatted[] = Rate::getEntity((object)$row);
}
return $formatted;
}
public function findByLocationCode($locationCode)
{
return $this
->select("r.*")
->from("rates", "r")
->where("r.location = ?", (int)$locationCode)
->orderBy("r.name", "ASC")
->fetch();
}
public function findWithCategories()
{
return $this
->select("r.*")
->from("rates", "r")
->join("locations", "locations.ID = r.location_ID")
->fetch();
}
}Finally configure the class to use the new service as query adapter.
<?php
namespace App\Model;
use App\Model\Service\RatesService;
class Rate extends AppCustomPostType
{
public static function repo()
{
$rates = new RatesService();
$rates->init();
return $rates;
}
}