definitions VS app

The factory is useful if you need to create objects using definition syntax and/or want to configure defaults for objects created.

Definitions is describing a way to create and configure a service, an object or return any other value. It must implement  Yiisoft\Definitions\Contract\DefinitionInterface that has a single method resolve(ContainerInterface $container).

The application is configured section of the params configuration file:

In params.php file you can define the locale identifier:

This ApplicationParameters.php allows you to globally configure some important parameters of your application, such as name and charset, you could also add any parameter you need.

Step 4: We modified our param.php config file.

Step 1: We install the application template to use in this case app .

Add support `SubFolder::class` middleware. by terabytesoftw · Pull Request #269 · yiisoft/app (github.com)

Let’s review this example, to use bootstrap5 in our app template.

**Yii Application Template:** [Template Yii3](https://github.com/yiisoft/app)

App template for Yii Framework v.3, provides a web and console environment, with minimal configuration, to create projects quickly.

Take a look at the configuration, and you'll see that changing it is as simple as changing a parameter in params.php, we've developed the right tools, that will do the job for you, that's simplicity.