Configurations¶

In the past it was difficult to understand how the Gambio shop system worked with configuration values. There were different database tables and functions to read and edit the settings.

With GX v4 the configuration tables have been migrated to new database tables and a new ConfigurationService has been implemented. This service can be used to retrieve, create, update and delete configurations.

If modules require shop settings and/or want to provide their configuration values, the ConfigurationService should be used. This abstraction layer allows us to make further changes to the underlying data structure in the future without jeopardizing the compatibility of external modules.

All the Gambio core configurations are namespaced, depending on their location before the Shop-Version GX v4.1.x. E.g. all configurations which were previously located in the gm_configuration table has a prefix with gm_configuration/

Read configurations¶

The configuration service provides the find and findLanguageDependent methods to read shop configurations. Both methods may return null if no configuration was found with the given key. You can use has or hasLanguageDependent first to ensure that these find methods returns a configuration object.

• Gambio\Core\Configuration\Services\ConfigurationService
  • find(string $key): ?Gambio\Core\Configuration\Model\Interfaces\Configuration
  • findLanguageDependent(string $key, string $languageCode): ?Gambio\Core\Configuration\Model\Interfaces\LanguageDependentConfiguration
  • has(string $key): bool
  • hasLanguageDependent(string $key, string $languageCode): bool

The method find returns a configuration object instance:

• Gambio\Core\Configuration\Model\Interfaces\Configuration
  • key(): string
  • value(): ?string
  • sortOrder(): ?int

Using the method findLanguageDependent returns a slightly more sophisticated configuration object instance:

• Gambio\Core\Configuration\Model\Interfaces\LanguageDependentConfiguration
  • key(): string
  • value(): ?string
  • sortOrder(): ?int
  • languageCode(): string

Once you have a configuration object, you can use the value(): ?string method to retrieve the value.

The database schema allows configuration values to be null, so the method can also return null. Otherwise, the current value of the configuration is returned as a string type.

Example:

namespace GXModules\<Vendor>\<Module>;

use Gambio\Core\Configuration\Services\ConfigurationService;

/**
 * Class SampleClass
 * @package GXModules\<Vendor>\<Module>
 */
class SampleClass
{
    /**
     * @var ConfigurationService
     */
    private $service;

    /**
     * SampleClass constructor.
     *
     * @param ConfigurationService $service
     */
    public function __construct(ConfigurationService $service)
    { 
        $this->service = $service;
    }


    public function example(): void
    {
        $configOrNull = $this->service->find('namespace/config-key');
        if ($this->service->has('namespace/config-key')) {
            $config = $this->service->find('namespace/config-key');
        }

        $langConfigOrNull = $this->service->findLanguageDependent('namespace/config-key', 'en');
        if ($this->service->hasLanguageDependent('namespace/config-key', 'en')) {
            $langConfig = $this->service->hasLanguageDependent('namespace/config-key', 'en');
        }

        // ...
    }
}

Simpler abstraction for reading configuration values¶

Besides the configuration service, we also implemented a simpler Gambio\Core\Configuration\Services\ConfigurationFinder service, which can be used to fetch configuration values.

The following example shows you how to use it:

namespace GXModules\<Vendor>\<Module>;

use Gambio\Core\Configuration\Services\ConfigurationFinder;

/**
 * Class SampleClass
 * @package GXModules\<Vendor>\<Module>
 */
class SampleClass
{
    /**
     * @var ConfigurationFinder
     */
    private $configurationFinder;

    /**
     * SampleClass constructor.
     *
     * @param ConfigurationFinder $configurationFinder
     */
    public function __construct(ConfigurationFinder $configurationFinder)
    { 
        $this->configurationFinder = $configurationFinder;
    }


    /**
     * @return string Returns a specific configuration value.
     */
    public function getSomeConfiguration(): string
    {
        $defaultValue = null;

        return $this->configurationFinder->get('namespace/my-configuration-key', $defaultValue);
    }
}

Saving configurations¶

Configuration values can be saved using the save, saveBulk, saveLanguageDependent and saveLanguageDependentBulk methods, depending on whether you want to store multiple values at the same time and whether you work with language-dependent configurations.

• Gambio\Core\Configuration\Services\ConfigurationService
  • save(string $key, ?string $value): void
  • saveBulk(array $configurations): void
  • saveLanguageDependent(string $key, string $languageCode, ?string $value): void
  • saveLanguageDependentBulk(array $configurations): void

New configurations are created using a unique key and existing will be updated by assigning an existing key.

Example:

namespace GXModules\<Vendor>\<Module>;

use Gambio\Core\Configuration\Services\ConfigurationService;

/**
 * Class SampleClass
 * @package GXModules\<Vendor>\<Module>
 */
class SampleClass
{
    /**
     * @var ConfigurationService
     */
    private $service;

    /**
     * SampleClass constructor.
     *
     * @param ConfigurationService $service
     */
    public function __construct(ConfigurationService $service)
    { 
        $this->service = $service;
    }


    public function example(): void
    {
        $this->service->save('namespace/config-key', 'config-value');
        $this->service->saveBulk([
            'namespace/key'       => 'value',
            'namespace/other-key' => 'other-value'
        ]);

        $this->service->saveLanguageDependent('namespace/config-key', 'en', 'config-value');
        $this->service->saveLanguageDependentBulk([
            [
                'key'          => 'namespace/key',
                'value'        => 'value',
                'languageCode' => 'en',
            ],
            [
                'key'          => 'namespace/other-key',
                'value'        => 'other-value',
                'languageCode' => 'en',
            ]
        ]);
    }
}

Delete configurations¶

For deleting configurations, the service provides the delete(string ...$keys) method. An unlimited number of configuration keys can be passed to it and all associated values will be deleted. If one of the given values does not exist, the entry will be skipped.

Example:

namespace GXModules\<Vendor>\<Module>;

use Gambio\Admin\Configuration\ConfigurationService;

/**
 * Class SampleClass
 * @package GXModules\<Vendor>\<Module>
 */
class SampleClass
{
    /**
     * @var ConfigurationService
     */
    private $service;


    /**
     * SampleClass constructor.
     *
     * @param ConfigurationService $service
     */
    public function __construct(ConfigurationService $service)
    {
        $this->service = $service;
    }


    public function example(): void
    {
        $this->service->delete('namespace/foo', 'namespace/bar', 'namespace/baz');

        // or

        $keys = ['namespace/foo', 'namespace/bar', 'namespace/baz'];
        $this->service->delete(...$keys);
    }
}